Tootfinder

How Trump's Imposition of Massive Tariffs is Repeating the "Ship Money" Abuses of King Charles I (Ilya Somin/Reason)
https://reason.com/volokh/2025/06/15/how-trumps-imposition-of-massive-tariffs-is-repeating-the-ship-money-abuses-of-king-charles-i/
http://www.memeorandum.com/250615/p62#a250615p62

Ignoring the past will doom Cowboys into repeating it https://insidethestar.com/ignoring-the-past-will-doom-cowboys-into-repeating-it

AT2022sxl: A Candidate Repeating Tidal Disruption Event in Possible Association with Two High-Energy Neutrino Events
Shunhao Ji (Yunnan University, China), Zhongxiang Wang (Yunnan University, China), Litao Zhu (Yunnan University, China), Stefan Geier (GRANTECAN: Cuesta de San Jos\'e s/n, Bre\~na Baja, La Palma, Spain), Alok C. Gupta (Aryabhatta Research Institute of Observational Sciences)

AT2022sxl: A Candidate Repeating Tidal Disruption Event in Possible Association with Two High-Energy Neutrino Events
We report a candidate repeating tidal disruption event (TDE), AT2022sxl, found from large-field optical survey data. Two flares with a separation time of $\sim$7.2\,yr between the two optical peaks are observed. Related mid-infrared (MIR) flares, with delay times of $\sim$200\,day are also seen. We analyze two optical spectra of the TDE source, onenear the optical peak of the second flare from the Transient Name Server and one at the quiescent flux level after the second flare. The latter was t…

Los Angeles checking in, repeating for the backrow... there was never, ever, EVER any need for the National Guard.
15,000 LAPD officers & 30,000 LA Sheriff's... we even have a SWAT team for God's sake.
#LosAngeles #trump

The New Republic (@newrepublic) on Threads
Los Angeles Police Department Chief denied that he had asked the White House for help in handling the protests, telling CNN that the department was “nowhere near” calling on assistance from the National Guard. https://trib.al/jv72hVT

Can repeating and non-repeating FRBs be drawn from the same population?
Paz Beniamini, Pawan Kumar
https://arxiv.org/abs/2506.09138 https://

Can repeating and non-repeating FRBs be drawn from the same population?
Do all Fast Radio Burst (FRB) sources repeat? We present evidence that FRB sources follow a Zipf-like distribution, in which the number density of sources is approximately inversely proportional to their burst rate above a fixed energy threshold-even though both the burst rate and number density span many orders of magnitude individually. We introduce a model-independent framework that predicts the distribution of observed fluences and distances, and repetition rates of an FRB population based …

Eagles' A.J. Brown on repeating as Super Bowl champions: 'The Lombardi, she's not loyal' https://www.nfl.com/news/eagles-aj-brown-repeating-super-bowl-champions-the-lombardi-shes-not-loyal

A post from the archive 📫:
View the origin of a repeating call stack
#visualstudio

Watching the Once Upon a Time... intro hits me with how tiny and temporary my life is compared to the giant sweep of history.
The scenes of people through different ages make me wonder what any of us really mean in the big picture.
The vast flow of time shown reminds me that anarchism is the way forward to break free from repeating cycles of power.
#Anarchism

The length of the repeating decimal
Siqiong Yao, Akira Toyohara
https://arxiv.org/abs/2507.01295 https://arxiv.org/pdf/2507.01295

The length of the repeating decimal
This paper investigates the length of the repeating decimal part when a fraction is expressed in decimal form. First, it provides a detailed explanation of how to calculate the length of the repeating decimal when the denominator of the fraction is a power of a prime number. Then, by factorizing the denominator into its prime factors and determining the repeating decimal length for each prime factor, the paper concludes that the overall repeating decimal length is the least common multiple of t…

hard to hear over the airplane noise, and a little fuzzy since I'm recording unfocused through our outdoor screens, but one of our local hummingbirds decided to come check out our hangout on the porch
did you know they make sounds like this? (the repeating, ratchety sound)

Gravitational Radiation-Driven Chaotic Tide in a White Dwarf-Massive Black Hole Binary as a Source of Repeating X-ray Transients
Shu Yan Lau, Hang Yu
https://arxiv.org/abs/2506.10163

Gravitational Radiation-Driven Chaotic Tide in a White Dwarf-Massive Black Hole Binary as a Source of Repeating X-ray Transients
Eccentric white dwarf-massive black hole binaries can potentially source some extreme X-ray transients, including the recently observed quasi-periodic X-ray eruptions and tidal disruption events at the galactic nuclei. Meanwhile, they are one of the target gravitational wave sources with extreme mass ratios for future millihertz gravitational wave missions. In this work, we focus on the tidal evolution and orbital dynamics of such binaries under the influence of the tidal backreaction and the d…

We have said and we shall not stop repeating it: no intermediaries, no agents and obedient servants who always end by becoming the real masters!
---- - Carlo Cafiero - ----

Mapping the Spatial Distribution of Fast Radio Bursts within their Host Galaxies
Alexa C. Gordon (Northwestern), Wen-fai Fong, Adam T. Deller, Lachlan Marnoch, Sungsoon Lim, Eric W. Peng, Keith W. Bannister, Apurba Bera, N. D. R. Bhat, Tyson Dial, Yuxin Dong, Tarraneh Eftekhari, Marcin Glowacki, Kelly Gourdji, Vivek Gupta, Joscha N. Jahns-Schindler, Akhil Jaini, Charles D. Kilpatrick, Chang Liu, J. Xavier Prochaska, Stuart D. Ryder, Ryan M. Shannon, Sunil Simha, Nicolas Tejos, Yuanming…

Mapping the Spatial Distribution of Fast Radio Bursts within their Host Galaxies
We present deep optical and near-infrared observations of the host galaxies of 34 fast radio bursts (FRBs) detected by the Commensal Real-time ASKAP Fast Transient (CRAFT) survey on the Australian SKA Pathfinder (ASKAP) to compare the locations of FRBs relative to their host light distributions. Incorporating three additional FRBs from the literature, for a total of four repeating and 33 apparently non-repeating FRBs, we determine their projected galactocentric offsets and find a median of $ 4.…

The Fair Periodic Assignment Problem
Rolf van Lieshout, Bart van Rossum
https://arxiv.org/abs/2507.04537 https://arxiv.org/pdf/2507.0…

The Fair Periodic Assignment Problem
We study the periodic assignment problem, in which a set of periodically repeating tasks must be assigned to workers within a repeating schedule. The classical efficiency objective is to minimize the number of workers required to operate the schedule. We propose a O(n log n) algorithm to solve this problem. Next, we formalize a notion of fairness among workers, and impose that each worker performs the same work over time. We analyze the resulting trade-off between efficiency and fairness, showi…

The Senate's stablecoin bill risks repeating past legislative mistakes (American Banker)
https://www.americanbanker.com/opinion/the-senates-stablecoin-bill-risks-repeating-past-legislative-mistakes
http://www.memeorandum.com/250603/p136#a250603p136

#LB Só porque eu achei bonita a imagem.
https://mathstodon.xyz/@ngons/114636901870731820

Discovery and Localization of the Swift-Observed FRB 20241228A in a Star-forming Host Galaxy
Alice P. Curtin, Shion Andrew, Sunil Simha, Alice Cai, Kenzie Nimmo, Shami Chatterjee, Amanda M. Cook, Fengqiu Adam Dong, Yuxin Dong, Tarraneh Eftekhari, Wen-fai Fong, Emmanuel Fonseca, Jason W. T. Hessels, Ronniy C. Joseph, Victoria Kaspi, Calvin Leung, Robert Main, Kiyoshi W. Masui, Ryan Mckinven, Daniele Michilli, Mason Ng, Ayush Pandhi, Aaron B. Pearlman, Ziggy Pleunis, Mawson W. Sammons, K…

Discovery and Localization of the Swift-Observed FRB 20241228A in a Star-forming Host Galaxy
On 2024 December 28, CHIME/FRB detected the thus-far non-repeating FRB 20241228A with a real-time signal-to-noise ratio of $>50$. Approximately 112~s later, the X-ray Telescope onboard the Neil Gehrels Swift Observatory was on source, the fastest follow-up to-date of a non-repeating FRB (Tohuvavohu et al. in prep.). Using CHIME/FRB and two of the three CHIME/FRB Outriggers, we obtained a Very Long Baseline Interferometry localization for FRB 20241228A with a 1$σ$ confidence ellipse of 11$^{\pr…

Democrats and opposition groups call the bill the Trump Tax Scam,
and with solid majorities turning against it in poll after poll, they are preparing to hammer Republicans for supporting cuts that will harm their constituents ahead of the 2026 midterms.
Republicans are repeating falsehoods about the bill’s impacts,
especially on health care, and lashing out in response — or calling it quits altogether.

The Political Blowback to GOP’s Medicaid Cuts Has Already Begun
Senate Republicans passed a budget package with the deepest cuts to health care in decades on Tuesday.

Comparing dragonfly wings to jars of marbles through the lens of hyperuniformity
Karen E. Daniels, Charles Emmett Maher, Katherine A. Newhall, Mason A. Porter, Christopher Rock
https://arxiv.org/abs/2508.05919

Comparing dragonfly wings to jars of marbles through the lens of hyperuniformity
When we look at the world around us, we see both organized (also called ordered) and disorganized (also called disordered) arrangements of things. Carefully-tiled floors and brick walls have organized and repeating patterns, but the stars in the sky and the trees in a forest look like they're arranged in a disordered way. We also see objects, like jars of marbles and the lacy wings of insects, that lie between ordered and disordered extremes. Although the marbles in a jar don't sit on a regular…

2025 Eagles game-by-game predictions: Repeating won't come easy for the champs https://www.foxsports.com/stories/nfl/predicting-eagles-2025-season-game-by-game

"Antoine de Saint-Exupéry, author of the second-most translated book of all time, colorfully explained (also in French) the importance of dress in our society through a simple anecdote: the planet of the Little Prince had been discovered in 1909 by a Turkish astronomer that nobody took seriously because of his traditional clothes. Repeating his conference in 1920, this time in suit and tie after a reform in his country, he had been applauded at length."

Evergreen post - the longer I work in government, the more I end up repeating bits verbatim
https://theatl.social/@ShmosKnows/114881277746999591

I still see people repeating the lie that the liberals "at least stopped sending weapons to Israel"
This is not true, this has been documented again and again
We keep giving weapons to a state committing genocide
https://www.readthemaple.com/c…

At the risk of repeating myself repeatedly: Peace Orchestra, Who Am I. #sound
https://www.youtube.com/watch?v=SG5BVxImD8o

I want to slap the AI (or the developers) in it's (their) face, when it's repeating the same error over and over again....
sometimes the outcome is impressive, but sometimes the AI is behaving worse than a little kid and not understanding what I want
(luckily for the AI (and the developers) I'm not slapping anyone.. but I would love to)
#AI

From @… for @… :
https://www.

The Anti-Porn Crusade That Censored Steam and Itch.io Started 30 Years Ago
Keywords and tags have never been a useful metric for distilling nuance. Pushing for regulations based on them is repeating a 30-year history of porn panic online.

This is of course very bad, but I also found it funny. AI evangelists are suddenly privacy-aware and repeating this as a security risk. And it is. But the idea that using ChatGPT itself hasn’t always been a security risk is ridiculous to me.

TLDR: If you’ve ever used the share function on a ChatGPT chat, that full chat can be found via Google, viewable for anyone in the world.

https:…

On the new BC Ferries being built in China.
Do we all remember the last time the BC NDP went down the road of “building a shipbuilding industry to build ferries”?
It has its own Wiki, of course.
"In addition to major delays and cost overruns, the ferries never fully met their original specifications, and only operated briefly in a reduced capacity, before being auctioned off at a substantial loss by the subsequently elected BC Liberal Party government.”
No, I'm not thrilled that China, an authoritarian state, is going to be building these ferries. But no BC or Canadian firms bid on the contract. And right now, the expertise in ship building is in China and Europe (the Island and Salish class vessels were built in Europe).
I don't blame the NDP for not repeating the same mistake 30 years later.
And the ferries will still be refit and maintained for their full service life within BC.
#BCPoli #BCNDP #FastFerry #Shipbuilding.
https://en.wikipedia.org/wiki/Fast_ferry_scandal

Time to give the human their morning pep talk

Doing some work outside, I hear an “alarm” sound coming from my (senior) neighbours’ house.
A droning, repeating sound. It goes on a few times before I start to wonder if someone needs to pay attention to that.
Is it a fire alarm? Is it another sort of “something bad is happening” alert? It’s loud, but not TOO loud… Should I worry? Should I check on them?
Then I hear footsteps and “Allô?”
Of course… it was just their house telephone ringing. Forgot those existed for a…

2025 Eagles game-by-game predictions: Repeating won't come easy for the champs https://www.foxsports.com/stories/nfl/predicting-eagles-2025-season-game-by-game

Trump took a victory lap during an event in Des Moines, Iowa,
that was officially billed as the start of a year-long celebration of America’s 250th anniversary, in 2026.
But Trump turned the potentially unifying moment into a campaign-style rally,
mocking Joe Biden’s speaking style,
repeating his lie of a stolen election
and lambasting the “fake news” media.
In a policy shift, he said he is willing to let migrant labourers stay in the US if the farmers the…

Not a JS expert, but if you ignore `<dialog>` (via `.showModal()`) to roll your own modal, I feel a different selector for interactive elements is better than repeating `.filter()` (comment link):
https://css-tricks.com/a-primer-on-focus-trapping/#comment-1…

A Primer on Focus Trapping | CSS-Tricks
Focus trapping is about managing focus within an element, such that focus always stays within it. The whole process sounds simple in theory, but it can quite difficult to build in practice, mostly because of the numerous parts to you got to manage.

AI is just another productivity tool and the productivity gains will be limited; for lasting economic expansion, AI must catalyze new industries and initiatives (Carl Benedikt Frey/Financial Times)
https://www.ft.com/content/55bc5876-254a-4daa-86f8-2cd0d939a866

AI alone cannot solve the productivity puzzle
Economic miracles stem from discovery, not repeating tasks at greater speed

You cannot "just ignore them." That is how you destroy a community. Moderation is always necessary.
https://peakd.com/community/@crell/why-you-can-t-just-ignore-them

"For more than half a century, Argentina has tried as hard as it could to push intellectuals out of the country, committing a slow institutionalized suicide. This almost imperceptible rotting process is at the root of the decadence of what was considered one of the richest and most advanced countries at the beginning of the 20th century."
Watching the US repeating this pattern in real time is unbearable yet completely predictable.

The Argentine Brain Drain
Argentina is currently experiencing a brain drain so strong that it made the headlines on Swiss television.

The formation and evolution of dust in the colliding-wind binary Apep revealed by JWST: #binary Apep [...] reveal an intricate series of nested concentric dust shells that are abundant in detailed substructure. The striking regularity in these substructures between successive shells suggests an exactly repeating formation mechanism combined with a highly stable outflow that maintains a consistent morphology even after reaching 0.6 pc (assuming a distance of 2.4 kpc) into the interstellar medium." See also https://bsky.app/profile/landru79.bsky.social/post/3luqbnb2jmk25 for other processing experiments with the image, https://arxiv.org/abs/2507.14610 for another paper and https://theconversation.com/swirling-nebula-of-two-dying-stars-revealed-in-spectacular-detail-in-new-webb-telescope-image-258314 for an article!

New on blog: "EPYTEST_PLUGINS and other goodies now in #Gentoo"
"""
If you are following the gentoo-dev mailing list, you may have noticed that there’s been a fair number of patches sent for the #Python eclasses recently. Most of them have been centered on #pytest support. Long story short, I’ve came up with what I believed to be a reasonably good design, and decided it’s time to stop manually repeating all the good practices in every ebuild separately.
In this post, I am going to shortly summarize all the recently added options. As always, they are all also documented in the Gentoo Python Guide.
"""
https://blogs.gentoo.org/mgorny/2025/07/26/epytest_plugins-and-other-goodies-now-in-gentoo/

History keeps repeating, dictators keep pulling each-other's strings.
"In interviews for a book about his Middle East peace efforts, Trump, according to its author, used an expletive to describe the embattled prime minister — “Fuck him,” he reportedly said — and accused Netanyahu of disloyalty."

The Anti-Porn Crusade That Censored Steam and Itch.io Started 30 Years Ago https://www.404media.co/steam-itchio-collective-shout-nsfw-games-campaign/

Wiener chaos expansion for stochastic Maxwell equations driven by Wiener process
Lihai Ji, Kuan Xue, Liying Zhang
https://arxiv.org/abs/2508.01271 https://…

Wiener chaos expansion for stochastic Maxwell equations driven by Wiener process
A novel and efficient algorithm based on the Wiener chaos expansion is proposed for the stochastic Maxwell equations driven by Wiener process. The proposed algorithm can reduce the original stochastic system to the deterministic case and separate the randomness in the computation. Therefore, it can yield a significant improvement of efficiency and lead to less computational errors compared to the Monte Carlo method, since the statistics of the solution can be solved directly without repeating o…

Repeating Flares, X-ray Outbursts and Delayed Infrared Emission: A Comprehensive Compilation of Optical Tidal Disruption Events
D. A. Langis, I. Liodakis, K. I. I. Koljonen, A. Paggi, N. Globus, L. Wyrzykowski, P. J. Miko{\l}ajczyk, K. Kotysz, P. Zieli\'nski, N. Ihanec, J. Ding, D. Morshed, Z. Torres
https://arxiv.org/abs/25…

Repeating Flares, X-ray Outbursts and Delayed Infrared Emission: A Comprehensive Compilation of Optical Tidal Disruption Events
Tidal disruption events (TDEs) have been proposed as valuable laboratories for studying dormant black holes. However, progress in this field has been hampered by the limited number of observed events. In this work, we present TDECat, a comprehensive catalogue of 134 confirmed TDEs (131 optical TDEs and 3 jetted TDEs) discovered up to the end of 2024, accompanied by multi-wavelength photometry (X-ray, UV, optical, and IR) and publicly available spectra. We also study the statistical properties, …

Magnetic control of metafluids for fluid-like applications of metamaterials
Ezra Ben-Abu, Anna Zigelman, Sefi Givli, Amir D. Gat
https://arxiv.org/abs/2507.00857

Magnetic control of metafluids for fluid-like applications of metamaterials
Metamaterials are structures composed of repeating unit-cells which enable macro-scale properties not found in nature. Since metamaterials are typically solid structures with predetermined interconnections, it is challenging to leverage their unique properties for many critical applications that require fluid-like behavior, such as heat engines or cooling cycles. Recent research suggested overcoming this limitation by creating a mechanical metafluid', which is a lubricated suspension of multist…

I got curious about israeli tanks presumed to have killed dozens of Gazans waiting for food aid. So I went looking on YT. Even Gazans have phones, so there must be like a hundred videos showing those tanks?
While there were 'reports' from BBC, Reuters and others repeating the claim, surprisingly I didn't find a single video of the colported incident. It was shown how Gazans brought wounded people to a hospital; the wounds pretty much looked like small arms fire.

"Yes, the Soviet losses were real. And yet it is truly tragic that these losses helped to subjugate nations longing for freedom, replacing one dictatorship with another. "
#history

This https://arxiv.org/abs/2503.08894 has been replaced.
initial toot: https://mastoxiv.page/@arXi…

Modeling and computation of the effective elastic behavior of parallelogram origami metamaterials
Origami metamaterials made of repeating unit cells of parallelogram panels joined at folds dramatically change their shape through a collective motion of their cells. Here we develop an effective elastic model and numerical method to study the large deformation response of these metamaterials under a broad class of loads. The model builds on an effective plate theory derived in our prior work [64]. The theory captures the overall shape change of all slightly stressed parallelogram origami defor…

Fascinating how the #IDF is always "looking into" incidents after civilians and reporters are murdered by IDF troops. Given that the same "incidents" keep repeating, what exactly is the purpose of "looking into" incidents? Is it so the #NetanyahuAdminstration can …

Fascinating how the #IDF is always "looking into" incidents after civilians and reporters are murdered by IDF troops. Given that the same "incidents" keep repeating, what exactly is the purpose of "looking into" incidents? Is it so the #NetanyahuAdminstration can …

Adaptive Duration Model for Text Speech Alignment
Junjie Cao
https://arxiv.org/abs/2507.22612 https://arxiv.org/pdf/2507.22612

Adaptive Duration Model for Text Speech Alignment
Speech-to-text alignment is a critical component of neural text to-speech (TTS) models. Autoregressive TTS models typically use an attention mechanism to learn these alignments on-line. However, these alignments tend to be brittle and often fail to generalize to long utterances and out-of-domain text, leading to missing or repeating words. Most non-autoregressive end to-end TTS models rely on durations extracted from external sources, using additional duration models for alignment. In this pape…

YouTube:
Hello mastodon!
"Before you continue to YouTube" sign this waiver, where you waive all your privacy rights to the might of the Google Behemoth and their overlords Alphabet inc.!
Mastodon:
Hey YouTube, suck on this usb stick!
YouTube:
It's like that huh? Then we'll go to war with you!!!
"Before you continue to YouTube"...
Mastodon:
STOP REPEATING YOURSELVES!
You were already "at war" wit…

Multi-year Polarimetric Monitoring of Four CHIME-Discovered Repeating Fast Radio Bursts with FAST
Yi Feng, Yong-Kun Zhang, Jintao Xie, Yuan-Pei Yang, Yuanhong Qu, Dengke Zhou, Di Li, Bing Zhang, Weiwei Zhu, Wenbin Lu, Jiaying Xu, Chenchen Miao, Shiyan Tian, Pei Wang, Ju-Mei Yao, Chen-Hui Niu, Jiarui Niu, Heng Xu, Jinchen Jiang, Dejiang Zhou, Zenan Liu, Chao-Wei Tsai, Zigao Dai, Xuefeng Wu, Fayin Wang, Jinlin Han, Kejia Lee, Renxin Xu, Yongfeng Huang, Yuanchuan Zou, Jinhuang Cao, Xiangl…

Multi-year Polarimetric Monitoring of Four CHIME-Discovered Repeating Fast Radio Bursts with FAST
In this study, we report multi-year polarization measurements of four repeating FRBs initially discovered by CHIME: FRBs~20190117A, 20190208A, 20190303A, and 20190417A. We observed the four repeating FRBs with FAST, detecting a total of 66 bursts. Two bursts from FRB~20190417A exhibit a circular polarization signal-to-noise ratio greater than 7, with the highest circular polarization fraction recorded at 35.7%. While the bursts from FRBs 20190208A and 20190303A are highly linearly polarized, th…

The Low Mass Dwarf Host Galaxy of Non-Repeating FRB 20230708A
August R. Muller (Maria Mitchell Observatory, Max Planck Institute for Gravitational Physics), Alexa C. Gordon (Northwestern University), Stuart D. Ryder (Macquarie University), Alexandra G. Mannings (University of California Santa Cruz), J. Xavier Prochaska (University of California Santa Cruz, Kavli Institute for the Physics and Mathematics of the Universe, National Astronomical Observatory of Japan), Keith W. Bannister (C…

The Low Mass Dwarf Host Galaxy of Non-Repeating FRB 20230708A
We present Very Large Telescope/X-Shooter spectroscopy for the host galaxies of 12 fast radio bursts (FRBs) detected by the Australian SKA Pathfinder (ASKAP) observed through the ESO Large Programme "FURBY", which imposes strict selection criteria on the included FRBs and their host galaxies to produce a homogeneous and well-defined sample. We describe the data reduction and analysis of these spectra and report their redshifts, line-emission fluxes, and derived host properties. From the present…

This https://arxiv.org/abs/2505.02270 has been replaced.
initial toot: https://mastoxiv.page/@ar…

Hyper Boris integrators for kinetic plasma simulations
We propose a family of numerical solvers for the nonrelativistic Newton--Lorentz equation in kinetic plasma simulations. The new solvers extend the standard 4-step Boris procedure, which has second-order accuracy in time, in three ways. First, we repeat the 4-step procedure multiple times, using an $n$-times smaller timestep ($Δt/n$). We derive a formula for the arbitrary subcycling number $n$, so that we obtain the result without repeating the same calculations. Second, prior to the 4-step pr…

Symmetry groups of origami structures
Sara Chari, Andrew Quinn Macauley
https://arxiv.org/abs/2506.19177 https://arxiv.org/pdf/2506.1…

Symmetry groups of origami structures
Origami is the art of folding paper into various patterns without cutting or tearing the paper. By viewing the paper as the complex plane, we iteratively compute and record all intersection points to construct mathematical origami sets. Additionally, we include the various lines to create a repeating pattern that can be viewed as a wallpaper group if the angle set contains fewer than 3 angles. There are 17 wallpaper groups up to isomorphism, so we determine which such groups can be constructed …

Constraining the origin of the long term periodicity of FRB 20180916B with Polarization Position Angle
S. Bethapudi, D. Z. Li, L. G. Spitler, V. R. Marthi, M. L. Bause, R. A. Main, R. S. Wharton
https://arxiv.org/abs/2507.07651

Constraining the origin of the long term periodicity of FRB 20180916B with Polarization Position Angle
FRB 20180916B is a repeating Fast Radio Burst (FRB) which produces bursts in a 5.1 day active window which repeats with a 16.34 day period. Models have been proposed to explain the periodicity using dynamical phenomena such as rotation, precession or orbital motion. Polarization Position Angle (PA) of the bursts can be used to distinguish and constraint the origin of the long term periodicity of the FRB. We aim to study the PA variability on short (within an observation) and long timescales (fr…

#Bisexual #QueerJoy #Queer #LGBTQIA

This https://arxiv.org/abs/2310.20509 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_qbi…

Effective growth rates in a periodically changing environment: From mutation to invasion
We consider a stochastic individual-based model of adaptive dynamics for an asexually reproducing population with mutation, with linear birth and death rates, as well as a density-dependent competition. To depict repeating changes of the environment, all of these parameters vary over time as piecewise constant and periodic functions, on an intermediate time-scale between those of stabilization of the resident population (fast) and exponential growth of mutants (slow). Studying the growth of eme…

This https://arxiv.org/abs/2502.16626 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

Hyper-active repeating fast radio bursts from rotation modulated starquakes on magnetars
The non-detection of periodicity related to rotation challenges magnetar models for fast radio bursts (FRBs) with FRB emission from close to the magnetar surface. Moreover, a bimodal distribution of the burst waiting times is widely observed in hyper-active FRBs, a significant deviation from the exponential distribution expected from stationary Poisson processes. By combining the epidemic-type aftershock sequence (ETAS) earthquake model and the rotating vector model (RVM) involving the rotation…

This https://arxiv.org/abs/2505.24082 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

Collimation of Fast Radio Burster 20201124A; Repeaters vs. Apparent Non-Repeaters
The recent report of a period in the active repeating Fast Radio Burster 20201124A and measurement of its spindown rate place bounds on the solid angle of its emission on the basis of energetics. The bound depends on the (unknown) efficiency of conversion of rotational energy to coherent radio emission and implies a lower bound on the Lorentz factor of the radiating charges. Bursts may be emitted along the magnetic dipole axis, in repeaters aligned with the rotational axis and the line of sight…

Localisation and host galaxy identification of new Fast Radio Bursts with MeerKA
In\'es Pastor-Marazuela, Alexa C. Gordon, Ben Stappers, Ilya S. Khrykin, Nicolas Tejos, Kaustubh Rajwade, Manisha Caleb, Mayuresh P. Surnis, Laura N. Driessen, Sunil Simha, Jun Tian, J. Xavier Prochaska, Ewan Barr, Wen-Fai Fong, Fabian Jankowski, Lordrick Kahinga, Charles D. Kilpatrick, Michael Kramer, Lluis Mas-Ribas

Localisation and host galaxy identification of new Fast Radio Bursts with MeerKA
Accurately localising fast radio bursts (FRBs) is essential for understanding their birth environments and for their use as cosmological probes. Recent advances in radio interferometry, particularly with MeerKAT, have enabled the localisation of individual bursts with arcsecond precision. In this work, we present the localisation of 15 apparently non-repeating FRBs detected with MeerKAT. Two of the FRBs, discovered in 2022, were localised in 8 second images from the projects which MeerTRAP was …

A prolific repeating fast radio burst source and a crisis of the magnetar model
Jun-Shuo Zhang, Tian-Cong Wang, Pei Wang, He Gao, Qin Wu, Di Li, Weiwei Zhu, Bing Zhang, Ke-Jia Lee, Jinlin Han, Chao-Wei Tsai, Fayin Wang, Yong-Feng Huang, Yuan-Chuan Zou, Dengke Zhou, Wanjin Lu, Jintao Xie, Jianhua Fang, Jinhuang Cao, Chen-Chen Miao, Yuhao Zhu, Yunchuan Chen, Xiaofeng Cheng, Yinan Ke, Yong-Kun Zhang, Long-Xuan Zhang, Shuo Cao, Shiyan Tian, Zi-Wei Wu, Chunfeng Zhang, Jiarui Niu, Dejiang Zh…

A prolific repeating fast radio burst source and a crisis of the magnetar model
Magnetars are widely considered to be the central engine of fast radio bursts (FRBs), capable of driving coherent radio emission through magnetic energy release. The accumulation of burst energy can be employed as a probe to reveal the nature of FRB energy engine. Current observations of repeaters have not yet provided sufficient constraints on the magnetic energy budget for magnetar models. Here we report 11,553 bursts detected from the hyper-active repeating source FRB 20240114A over 214 days…

This https://arxiv.org/abs/2505.24082 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

Collimation of Fast Radio Burster 20201124A; Repeaters vs. Apparent Non-Repeaters
The recent report of a period in the active repeating Fast Radio Burster 20201124A and measurement of its spindown rate place bounds on the solid angle of its emission on the basis of energetics. The bound depends on the (unknown) efficiency of conversion of rotational energy to coherent radio emission and implies a lower bound on the Lorentz factor of the radiating charges. Bursts may be emitted along the magnetic dipole axis, in repeaters aligned with the rotational axis and the line of sight…

The day-long, repeating GRB 250702BDE / EP250702a: A unique extragalactic transient
Andrew J. Levan, Antonio Martin-Carrillo, Tanmoy Laskar, Rob A. J. Eyles-Ferris, Albert Sneppen, Maria Edvige Ravasio, Jillian C. Rastinejad, Joe S. Bright, Francesco Carotenuto, Ashley A. Chrimes, Gregory Corcoran, Benjamin P. Gompertz, Peter G. Jonker, Gavin P. Lamb, Daniele B. Malesani, Andrea Saccardi, Javier Sanchez Sierras, Benjamin Schneider, Steve Schulze, Nial R. Tanvir, Susana D. Vergani, Dara…

The day-long, repeating GRB 250702BDE / EP250702a: A unique extragalactic transient
Gamma-ray bursts (GRBs) are singular outbursts of high-energy radiation with durations typically lasting from milliseconds to minutes and, in extreme cases, a few hours. They are attributed to the catastrophic outcomes of stellar-scale events and, as such, are not expected to recur. Here, we present observations of an exceptional GRB\,250702BDE which triggered the {\em Fermi} gamma-ray burst monitor on three occasions over several hours, and which was detected in soft X-rays by the \textit{Eins…

Decadal evolution of a repeating fast radio burst source
P. Wang, J. S. Zhang, Y. P. Yang, D. K. Zhou, Y. K. Zhang, Y. Feng, Z. Y. Zhao, J. H. Fang, D. Li, W. W. Zhu, B. Zhang, F. Y. Wang, Y. F. Huang, R. Luo, J. L. Han, K. J. Lee, C. W. Tsai, Z. G. Dai, H. Gao, X. P. Zheng, J. H. Cao, X. L. Chen, E. Gugercinoglu, J. C. Jiang, W. C. Jing, Y. Li, J. Li, W. J. Lu, J. W. Luo, F. Lyu, C. C. Miao, C. H. Niu, J. R. Niu, Y. Qu, W. Y. Wang, Y. D. Wang, Y. B. Wang, C. J. Wang, Q. Wu, Y. S. Wu, …

Decadal evolution of a repeating fast radio burst source
The origin of fast radio bursts (FRBs), the brightest cosmic radio explosions, is still unknown. Bearing critical clues to FRBs' origin, the long-term evolution of FRBs has yet to be confirmed, since the field is still young and most FRBs were seen only once. Here we report clear evidence of decadal evolution of FRB~20121102A, the first precisely localized repeater. In conjunction with archival data, our FAST and GBT monitoring campaign since 2020 reveals a significant 7% decline of local dispe…

Comparative analysis of machine learning techniques for feature selection and classification of Fast Radio Bursts
Ailton J. B. J\'unior, J\'eferson A. S. Fortunato, Leonardo J. Silvestre, Thonimar V. Alencar, Wiliam S. Hip\'olito-Ricaldi
https://arxiv.org/abs/2506.18854

Comparative analysis of machine learning techniques for feature selection and classification of Fast Radio Bursts
Fast Radio Bursts (FRBs) are millisecond-duration radio transients of extragalactic origin, exhibiting a wide range of physical and observational properties. Distinguishing between repeating and non-repeating FRBs remains a key challenge in understanding their nature. In this work, we apply unsupervised machine learning techniques to classify FRBs based on both primary observables from the CHIME catalog and physically motivated derived features. We evaluate three hybrid pipelines combining dime…

A new long period radio transient: Discovery of pulses repeating every 1.16 hours from ASKAP J175534.9-252749.1
Samuel J. McSweeney, Natasha Hurley-Walker, Csan\'ad Horv\'ath, Akash Anumarlapudi, Angie Waszewski, Dougal Dobie, David L. Kaplan, John Morgan, Kovi Rose, Ziteng Wang
https://arxiv.org/abs/2507.14448

A new long period radio transient: Discovery of pulses repeating every 1.16 hours from ASKAP J175534.9-252749.1
We report the discovery of several new pulses from the source ASKAP J175534.9-252749.1 (J1755-2527), originally identified from a single 2-min long pulse, confirming it as a long period transient (LPT) with a period of ~1.16 hours. The pulses are significantly scattered, consistent with Galactic electron density models. Two of the new pulses also had measurable polarisation, but unlike the originally detected pulse, the polarisation angle does not behave as expected from the rotating vector mod…

H.E.S.S. programme searching for VHE gamma rays associated with FRBs
F. Aharonian, A. Archaryya, J. Aschersleben, H. Ashkar, M. Backes, V. Barbosa. Martins, R. Batzofin, Y. Becherini, D. Berge, K. Bernl\"ohr, M. B\"ottcher, C. Boisson, J. Bolmont, M. de. Bony. de. Lavergne, J. Borowska, F. Bradascio, R. Brose, A. Brown, F. Brun, B. Bruno, C. Burger-Scheidlin, S. Casanova, J. Celic, M. Cerruti, T. Chand, S. Chandra, A. Chen, J. Chibueze, O. Chibueze, J. Damascene. Mbarubucyeye…

H.E.S.S. programme searching for VHE gamma rays associated with FRBs
Fast Radio Bursts (FRBs) are highly energetic, extremely short-lived bursts of radio flashes. Despite extensive research, the exact cause of these outbursts remains speculative. The high luminosity, short duration, and high dispersion measure of these events suggest they result from extreme, high-energy extragalactic sources, such as highly magnetized and rapidly spinning neutron stars known as magnetars. The number of detected FRBs, including repeating ones, has grown rapidly in recent years. …

Collimation of Fast Radio Burster 20201124A; Repeaters vs. Apparent Non-Repeaters
J. I. Katz
https://arxiv.org/abs/2505.24082 https://

Collimation of Fast Radio Burster 20201124A; Repeaters vs. Apparent Non-Repeaters
The recent report of a period in the active repeating Fast Radio Burster 20201124A and measurement of its spindown rate place bounds on the solid angle of its emission on the basis of energetics. The bound depends on the (unknown) efficiency of conversion of rotational energy to coherent radio emission and implies a lower bound on the Lorentz factor of the radiating charges. Bursts may be emitted along the magnetic dipole axis, in repeaters aligned with the rotational axis and the line of sight…

The radio properties of quasi-periodic X-ray eruption sources
A. J. Goodwin, R. Arcodia, G. Miniutti, J. C. A Miller-Jones, S. van Velzen
https://arxiv.org/abs/2506.14417

The radio properties of quasi-periodic X-ray eruption sources
Quasi-periodic X-ray eruptions (QPEs) are a new class of repeating nuclear transient in which repeating X-ray flares are observed coming from the nuclei of generally low mass galaxies. Here we present a comprehensive summary of the radio properties of 12 bona-fide quasi-periodic eruption sources, including a mix of known tidal disruption events (TDEs) and AGN-like hosts. We include a combination of new dedicated radio observations and archival/previously published radio observations to compile …

Constraining the Origin of FRB 20121102A's Persistent Radio Source with Long-Term Radio Observations
Mohit Bhardwaj, Arvind Balasubramanian, Yasha Kaushal, Shriharsh P. Tendulkar
https://arxiv.org/abs/2506.23861

Constraining the Origin of FRB 20121102A's Persistent Radio Source with Long-Term Radio Observations
The persistent radio source (PRS) associated with FRB 20121102A, the first precisely localized repeating fast radio burst (FRB), provides key constraints on both its local environment and the nature of the underlying FRB engine. We present a seven-year (2016-2023) temporal analysis of the PRS, combining new uGMRT observations with archival data across L-band frequencies. We find no statistically significant long-term trend in its L-band flux density. The observed variability is consistent with …

Exploring the Link between Fast Radio Burst and Binary Neutron Star Origins with Spaceborne Gravitational Wave Observations
Yu-xuan Yin, En-kun Li, Bing Zhang, Yi-Ming Hu
https://arxiv.org/abs/2506.12602

Exploring the Link between Fast Radio Burst and Binary Neutron Star Origins with Spaceborne Gravitational Wave Observations
The origin of repeating Fast Radio Bursts (FRBs) is an open question, with observations suggesting that at least some are associated with old stellar populations. It has been proposed that some repeating FRBs may be produced by interactions of the binary neutron star magnetospheres decades to centuries before the coalescence. These systems would also emit centi-Hertz gravitational waves during this period, which can be detectable by space-borne gravitational wave detectors. We explore the prosp…

FRB 20250316A: A Brilliant and Nearby One-Off Fast Radio Burst Localized to 13 parsec Precision
FRB Collaboration, Thomas C. Abbott, Daniel Amouyal, Shion E. Andrew, Kevin Bandura, Mohit Bhardwaj, Kalyani Bhopi, Yash Bhusare, Charanjot Brar, Alice Cai, Tomas Cassanelli, Shami Chatterjee, Jean-Fran\c{c}ois Cliche, Amanda M. Cook, Alice P. Curtin, Evan Davies-Velie, Matt Dobbs, Fengqiu Adam Dong, Yuxin Dong, Gwendolyn Eadie, Tarraneh Eftekhari, Wen-fai Fong, Emmanuel Fonseca, B. M. Gaens…

FRB 20250316A: A Brilliant and Nearby One-Off Fast Radio Burst Localized to 13 parsec Precision
Precise localizations of a small number of repeating fast radio bursts (FRBs) using very long baseline interferometry (VLBI) have enabled multiwavelength follow-up observations revealing diverse local environments. However, the 2--3\% of FRB sources that are observed to repeat may not be representative of the full population. Here we use the VLBI capabilities of the full CHIME Outriggers array for the first time to localize a nearby (40 Mpc), bright (kJy), and apparently one-off FRB source, FRB…

SRG/eROSITA No. 5: Discovery of quasi-periodic eruptions every ~3.7 days from a galaxy at z>0.1
R. Arcodia, P. Baldini, A. Merloni, A. Rau, K. Nandra, J. Chakraborty, A. J. Goodwin, M. J. Page, J. Buchner, M. Masterson, I. Monageng, Z. Arzoumanian, D. Buckley, E. Kara, G. Ponti, M. E. Ramos-Ceja, M. Salvato, K. Gendreau, I. Grotova, M. Krumpe
http…

SRG/eROSITA No. 5: Discovery of quasi-periodic eruptions every ~3.7 days from a galaxy at z>0.1
Quasi-periodic eruptions (QPEs) are repeating soft X-ray bursts from the nuclei of galaxies, tantalizingly proposed to be extreme mass ratio inspirals. Here, we report the discovery of a new galaxy showing X-ray QPEs, the fifth found through a dedicated blind search in the \emph{SRG}/eROSITA all-sky survey data, hereafter named eRO-QPE5. Its QPE duration ($t_{\rm dur}\sim0.6$\,d), recurrence time ($t_{\rm recur}\sim3.7\,$d), integrated energy per eruption ($\sim3.4 \times 10^{47}\,$erg), and bl…

Unveiling the Cosmic Dance of Repeated Nuclear Transient ASASSN-14ko: Insights from Multiwavelength Observations
Shifeng Huang, Tinggui Wang, Ning Jiang, Rong-Feng Shen, Zhaohao Chen, Yuanming Wang, Jiazheng Zhu, Yibo Wang, Yunguo Jiang, Xinwen Shu, Hucheng Ding, Xiongjun Fang, Yifan Wang, Jie Lin, Jingran Xu, Xu Chen, Zheyu Lin, Zhengfeng Sheng
http…

Unveiling the Cosmic Dance of Repeated Nuclear Transient ASASSN-14ko: Insights from Multiwavelength Observations
ASASSN-14ko is a periodically repeating nuclear transient. We conducted high-cadence, multiwavelength observations of this source, revealing several recurrent early bumps and rebrightenings in its UV/optical light curves. The energy released during these bumps and rebrightenings shows a diminishing trend in recent UV/optical outbursts, which we monitored through multiwavelength observations. These features can be ascribed to the interaction between stream debris and the expanded disk in the rep…

Disk Instability Model for Quasi-Periodic Eruptions: Investigating Period Dispersion and Peak Temperature
Xin Pan, Shuang-Liang Li, Xinwu Cao, Bifang Liu, Weimin Yuan
https://arxiv.org/abs/2507.11100

Disk Instability Model for Quasi-Periodic Eruptions: Investigating Period Dispersion and Peak Temperature
Quasi-periodic eruptions (QPEs) are a class of X-ray repeating burst phenomena discovered in recent years. Many models have been proposed to study this phenomenon, there remains significant debate regarding the physical origin of QPEs. In our previous work, we developed a disk instability model with a large-scale magnetic field and successfully reproduced the light curves and spectral characteristics of several QPE sources. We further investigate the model in this work, aiming to explain two ke…

A Hyperactive FRB Pinpointed in an SMC-Like Satellite Host Galaxy
M. Bhardwaj, M. P. Snelders, J. W. T. Hessels, A. Gil de Paz, S. Bhandari, B. Marcote, A. Kirichenko, O. S. Ould-Boukattine, F. Kirsten, E. K. Bempong-Manful, V. Bezrukovs, J. D. Bray, S. Buttaccio, A. Corongiu, R. Feiler, M. P. Gawronski, M. Giroletti, D. M. Hewitt, M. Lindqvist, G. Maccaferri, A. Moroianu, K. Nimmo, Z. Paragi, W. Puchalska, N. Wang, D. Williams-Baldwin, J. P. Yuan

A Hyperactive FRB Pinpointed in an SMC-Like Satellite Host Galaxy
Precise localizations of fast radio bursts (FRBs) are essential for uncovering their host galaxies and immediate environments. We present the milliarcsecond-precision European VLBI Network (EVN) localization of FRB 20240114A, a hyper-active repeating FRB, achieving <90x30 mas (1-sigma) accuracy. This precision places the burst 0.5 kpc from the nucleus of its low-metallicity star-forming dwarf host at a spectroscopic redshift of z = 0.1300. Our Gran Telescopio CANARIAS (GTC) spectroscopic follow…