Tootfinder

Überwachen statt Löschen: Innenminister wollen Missbrauchsbilder online lassen
Die Innenministerkonferenz will die Polizei weiterhin doch nicht verpflichten, im Darknet systematisch nach Aufnahmen von sexuellem Kindesmissbrauch zu suchen.

Workshop announcement: Ally Skills
#𝐀𝐥𝐥𝐲𝐒𝐤𝐢𝐥𝐥𝐬 𝐖𝐨𝐫𝐤𝐬𝐡𝐨𝐩 𝐛𝐲 #𝐎𝐋𝐒
Many of us want to support marginalised people, but we don’t always know how.
Join us for an interactive workshop where you’ll explore your own privileges and learn concrete ways to step up for others in professional and personal spaces—in a meaningful and effective way.
July 2, 14:00 - 17:30 EET
#OpenScience!

Fest der Kulturen in Brunsbüttel bei der Seemannsmission
Am 17.5. von 12-17 Uhr
Mit Essen & Getränken aus verschiedenen Ländern - und Musik
Bunt & vielfältig & interkulturell -

I’m Brigadier General Shawn Harris.
I served this nation for decades in the US Army and now I’m answering the call to serve again
— this time, to defeat Marjorie Taylor Greene and bring sanity back to Congress.
This week, Donald Trump said has sent U.S. Marines into Los Angeles.
As someone who led troops in combat, I can tell you:
our troops don’t serve to be used as political weapons against Americans.
Marjorie Taylor Greene stood by that reckless idea

I just gave to Shawn Harris!
Show your support with a contribution.

«As a result, there’s been some speculation that the [Waymo] cars were burned to destroy evidence. There’s likely more to it than that—and that the cars weren’t torched to destroy evidence as much to punish collaborators.»
Speaking of the Zeitgeist about working with big tech. 😁
https://www.bloodinthemachine.com/p/the-weaponization-of-waymo

Via https://unusual-suspects.tumblr.com/post/778895967282954240
https://migurski.tumblr.com/post/7…

Unusual Suspects

You know it's coming, but you just never know. I was lucky to see Brian solo once, it was a magical show. RIP to this legend. I don't even know how to start with how much I love the Beach Boys. I've talked about it many times on here, how I really got into them in my teens, my parents had tapes (I wrote about my love for Wild Honey here:

Albums that made me
I heard about this great ‘albums that made me’ idea (that’s apparently been floating around other social media sites for a while now) via another Jake on Mastodon. So, big thanks …

Listen: Jill Sobule’s F*CK7THGRADE Original Cast Recording Now Available
https://www.broadwayworld.com/off-broadway/article/Listen-Jill-Sobules-Fck-7th-Grade-Original-Cast-Recording-Now-Available-20…

I *loved* this game! And the others from the same developer. Masters of the Elements (1999) is one of the all-time great art games imho.
https://digipres.club/@misty/114496041511519164

Misty (@misty@digipres.club)
Attached: 1 image Fantastic adventures in the world of the internet!

'‘Ticking timebomb’: sea acidity has reached critical levels, threatening entire ecosystems – study"
#Oceans #Environment

Planned PBS, NPR cuts would overwhelmingly hit outlets in states Trump won, report finds (Scott Macfarlane/CBS News)
https://www.cbsnews.com/news/pbs-npr-cuts-states-won-by-trump/
http://www.memeorandum.com/250612/p70#a250612p70

Replaced article(s) found for astro-ph.GA. https://arxiv.org/list/astro-ph.GA/new/
[1/1]:
The survey of planetary nebulae in Andromeda (M31) VII. Predictions of a major merger simulation ...

How climate change triggered a landslide tsunami
#FederatedMemory

Decay and Strichartz estimates for critical electromagnetic wave equations on conic manifolds
Qiuye Jia, Junyong Zhang
https://arxiv.org/abs/2506.09635 htt…

Decay and Strichartz estimates for critical electromagnetic wave equations on conic manifolds
We establish the decay and Strichartz estimates for the wave equation with large scaling-critical electromagnetic potentials on a conical singular space $(X,g)$ with dimension $n\geq3$, where the metric $g=dr^2+r^2 h$ and $X=C(Y)=(0,\infty)\times Y$ is a product cone over the closed Riemannian manifold $(Y,h)$ with metric $h$. The decay assumption on the magnetic potentials is scaling critical and includes the decay of Coulomb type. The main technical innovation lies in proving localized pointw…

Surface Induced Frustration of Inherent Dipolar Order in Nanoconfined Water
Sayantan Mondal, Saumyak Mukherjee, Biman Bagchi
https://arxiv.org/abs/2506.09809

Surface Induced Frustration of Inherent Dipolar Order in Nanoconfined Water
Surface effects could play a dominant role in modifying the natural liquid order. In some cases, the effects of the surface interactions can propagate inwards, and even can interfere with a similar propagation from opposite surfaces. This can be particularly evident in liquid water under nano-confinement. The large dipolar cross-correlations among distinct molecules that give rise to the unusually large dielectric constant of water (and in turn owe their origin to the extended hydrogen bond (HB…

🇺🇦 #NowPlaying on KEXP's #MorningShow
David Bowie:
🎵 I’m Afraid of Americans (V1)
#DavidBowie
https://invd.bandcamp.com/track/david-bowie-im-afraid-of-americans-invd-remix
https://open.spotify.com/track/3Bm9MECTjX8FLs93ux8Fh8

Europol: Datendiebstahl ist Big Business und eine erhebliche Bedrohung
KI und andere Spitzentechnologien beschleunigen die Schattenseiten der digitalen Revolution, moniert Europol. Cyberkriminelle steigerten damit ihre Effizienz.

This is the header from a german book seller's website. Notice, that the sorta *wishlist* heart icon badge maxes out at single digit 9 !
Is that the real world, where people only have like nine items that they save? Is this just for “design aesthetics”? My wishlist contains 107!

Bradley Chubb says Dolphins 'were lying, honestly' about culture change last season

https://www.cbssports.com/nfl/news/bradley-chu…

Genau genommen teilt sich die Menschheit in zwei Gruppen.
Die einen glauben, dass Maschinen intelligent sein können (und gruseln sich sehr vor Robotern & Co.), und die anderen glauben das nicht (mehrheitlich Leute, die sich beruflich mit dem Thema befassen. Gruseln sich auch, aber vor was anderem).

We are doing our first Xogot game jam!
https://itch.io/jam/xogot-jam

A Xogot Game Jam
A game jam from 2025-06-20 to 2025-07-14 hosted by Xogot. A Xogot Game Jam Build a game with Godot on your iPad! Join us for our first-ever Xogot Game Jam: 10 days of building, experimenting, and sharing game...

I’ve long been a fan of the Check My Ads people. Now they’re launching a really ambitious-looking “Policy Platform” aimed at cleaning up the online-advertising business. My belief is that anyone who’s had much exposure to that business or to “AdTech” probably agrees that cleanup is called for. Check it out: https://checkmyads.org/policy/

I have two Celeron Chromeboxes that are out of support but it seems that they both can be flashed with standard UEFI firmware. Any ideas for a use case for a 10-12 year old mini PC?

Replaced article(s) found for math.RT. https://arxiv.org/list/math.RT/new/
[1/1]:
Starfish lemma via birational quasi-isomorphisms
https://…

Replaced article(s) found for astro-ph.IM. https://arxiv.org/list/astro-ph.IM/new/
[1/1]:
Observable-based reformulation of time-delay interferometry

Latent geometry emerging from network-driven processes
Andrea Filippo Beretta, Davide Zanchetta, Sebastiano Bontorin, Manlio De Domenico
https://arxiv.org/abs/2506.09616

Latent geometry emerging from network-driven processes
Understanding network functionality requires integrating structure and dynamics, and emergent latent geometry induced by network-driven processes captures the low-dimensional spaces governing this interplay. Here, we focus on generative-model-based approaches, distinguishing two reconstruction classes: fixed-time methods, which infer geometry at specific temporal scales (e.g., equilibrium), and multi-scale methods, which integrate dynamics across near- and far-from-equilibrium scales. Over the …

Search for the charmonium weak decays $J/\psi\to D_{s}^{-}\rho^{ } c.c.$ and $J/\psi\to D_{s}^{-}\pi^{ } c.c.$
BESIII Collaboration, et al.
https://arxiv.org/abs/2506.09386

Search for the charmonium weak decays $J/ψ\to D_{s}^{-}ρ^{+}+c.c.$ and $J/ψ\to D_{s}^{-}π^{+}+c.c.$
Based on $(10087\pm44)\times 10^6$ $J/ψ$ events recorded with the BESIII detector, we search for the rare charmonium weak decays $J/ψ\to D_{s}^{-}ρ^{+}+c.c.$ and $J/ψ\to D_{s}^{-}π^{+}+c.c.$ No signal is observed, and upper limits on the branching fractions at the $90\%$ confidence level are set as $\mathcal{B}(J/ψ\to D_{s}^{-}ρ^{+}+c.c.)<8.0\times10^{-7}$ and $\mathcal{B}(J/ψ\to D_{s}^{-}π^{+}+c.c.)<4.1\times10^{-7}$. Our results provide the most stringent experimental constraints on …

What to Watch for in Abrego Garcia’s Hearing on Potential Pretrial Detention on Friday
The government will want to focus on Abrego Garcia’s alleged links to MS-13,
he will respond that no detention hearing is warranted,
and the magistrate judge may end up relying on his immigration detention.

Not to mention that many folks who are regular contributors to #inaturalist are deeply invested into the environment and aren't fans of destroying it using 'GenAI - or that partnering with big-tech that destroys society in addition to nature might be 'a bit' tone-deaf in 2025…

“…you could find very small compositions within comic books that seemed massive and complete when isolated, and that proved that 4CP printing created accidental masterpieces all over the place” Via https://70sscifiart.tumblr.com/post/782988657104764928

70s Sci-Fi Art
4cp: “4cp: “” Forever one of my favorite comic book details. This was a very early “proof of concept” of my scanning/cropping approach - the idea that that you could find very small compositions...

"Violinist composes music from moth flight data to highlight insect decline"
#Music #Insects #Animals

Violinist composes music from moth flight data to highlight insect decline
Music and science collide in Moth x Human, a new composition by violinist Ellie Wilson that transforms moth flight data into a haunting tribute to these overlooked pollinators

Vance Secretly Flies for Audience With Trump-Baiting Rupert Murdoch (Josephine Harvey/The Daily Beast)
https://www.thedailybeast.com/jd-vance-calls-in-on-rupert-murdoch-despite-his-papers-flaying-trump/
http://www.memeorandum.com/250612/p69#a250612p69

Open repos & AI bots
#FederatedMemory
https://coar-repositories.org/news-updates/open-repositories-are-being-profoundly-impacted-by-ai-bots-and-other-crawlers-results-of-a-coar-survey/
and https://codeberg.org/forgejo/discussions/issues/339

Last year I wrote a paper on how "GenAI" is a risk for #citizenscience (it being an academic paper it's still slowly dying in review). One of the points was that using "AI" devalues the contributions made by human volunteers, leading to contributors (rightfully) disengaging.
Yesterday, #inaturalist announced an "AI"-partnership with Google, and unsurprisingly that's exactly the backlash they got…
https://www.inaturalist.org/blog/113184-inaturalist-receives-grant-to-improve-species-suggestions

NFL's most underrated players at each position, plus Bengals drama continues on team's final day of minicamp

https://www.cbssports.com/n…

Replaced article(s) found for math.AP. https://arxiv.org/list/math.AP/new/
[1/1]:
Refined bilinear Strichartz estimates with application to the well-posedness of periodic generali...

Replaced article(s) found for cond-mat.soft. https://arxiv.org/list/cond-mat.soft/new/
[1/1]:
Breaking Mechanical Holography in Combinatorial Metamaterials
…

[2025-06-12 Thu (UTC), 1 new article found for physics.soc-ph Physics and Society]
toXiv_bot_toot

Optimal Transport for $e/\pi^0$ Particle Classification in LArTPC Neutrino Experiments
David Caratelli, Nathaniel Craig, Chuyue Fang, Jessica N. Howard
https://arxiv.org/abs/2506.09238

Optimal Transport for $e/π^0$ Particle Classification in LArTPC Neutrino Experiments
The efficient classification of electromagnetic activity from $π^0$ and electrons remains an open problem in the reconstruction of neutrino interactions in Liquid Argon Time Projection Chamber (LArTPC) detectors. We address this problem using the mathematical framework of Optimal Transport (OT), which has been successfully employed for event classification in other HEP contexts and is ideally suited to the high-resolution calorimetry of LArTPCs. Using a publicly available simulated dataset fro…

Replaced article(s) found for astro-ph.GA. https://arxiv.org/list/astro-ph.GA/new/
[1/1]:
The Milky Way as Seen by Classical Cepheids I: Distances Based on Mid-infrared Photometry

On the calculation of p-values for quadratic statistics in Pulsar Timing Arrays
Rutger van Haasteren
https://arxiv.org/abs/2506.10811 https://

On the calculation of p-values for quadratic statistics in Pulsar Timing Arrays
Pulsar Timing Array (PTA) projects have reported various lines of evidence suggesting the presence of a stochastic gravitational wave (GW) background in their data. One key line of evidence involves a detection statistic sensitive to inter-pulsar correlations, such as those induced by GWs. A $p$-value is then calculated to assess how unlikely it is for the observed signal to arise under the null hypothesis $H_0$, purely by chance. However, PTAs cannot empirically draw samples from $H_0$. As a w…

Russian Scientist Released After Four Months in Federal Custody (Ellen Barry/New York Times)
https://www.nytimes.com/2025/06/12/science/russian-scientist-harvard-release.html
http://www.memeorandum.com/250612/p68#a250612p68

Südkoreanische Forscher bauen Elektromotor ohne Metall
Ein Team aus Südkorea hat einen Elektromotor ohne Spulen aus Metall entwickelt. Das hat einige Vorteile, ist aber auch teuer.
https://www.

Watch: Rep. Turner asks Hegseth to clarify Trump's Greenland plans (CBS News)
https://www.cbsnews.com/video/watch-rep-turner-asks-hegseth-clarify-trump-greenland-plans/
http://www.memeorandum.com/250612/p67#a250612p67

Patriots to unveil statue of Tom Brady ahead of preseason game vs. the Commanders

https://www.cbssports.com/nfl/news/patriots-to-unveil-st…

An optimal class of domains permitting inner boundaries in a divergence theorem for rough integrands
Thomas Ruf
https://arxiv.org/abs/2506.09978 https://…

An optimal class of domains permitting inner boundaries in a divergence theorem for rough integrands
The divergence theorem on an open domain $U \subset \mathbb{R}^m$ of finite measure is investigated for the rough class $\mathcal{DM}_\infty(U)$ of bounded vector fields $u \, \colon \, U \to \mathbb{R}^m$ with a finite Radon measure divergence. Let $\mathcal{DB}(U)$ denote the closure of $\mathcal{DM}_\infty(U)$ in the Lebesgue space $L_\infty(U)$. Equivalent conditions are proved for the domain $U$ to admit the divergence theorem \begin{equation} \exists ! \ell \in \mathcal{DB}'(U) \, \colon …

Replaced article(s) found for physics.soc-ph. https://arxiv.org/list/physics.soc-ph/new/
[1/1]:
Growth of Science and Women: Methodological Challenges of Using Structured Big Data

[2025-06-12 Thu (UTC), 2 new articles found for hep-ex High Energy Physics - Experiment]
toXiv_bot_toot

A Theoretical Three-Dimensional Diagram to Separate Star Formation, Active Galactic Nuclei, and Shocks in Galaxies
Peixin Zhu, Lisa J. Kewley, Ralph S. Sutherland, Kathryn Grasha
https://arxiv.org/abs/2506.09962

A Theoretical Three-Dimensional Diagram to Separate Star Formation, Active Galactic Nuclei, and Shocks in Galaxies
The excitation sources in galaxies are frequently mixed due to AGN and stellar feedback, including star formation, active galactic nuclei (AGNs), and shock excitation. Disentangling the star formation, AGN, and shocks in galaxy integral-field spectra (IFU) at optical wavelengths is crucial to expanding the galaxy sample for AGN and stellar feedback studies, given the lack of multiwavelength observations for most of the galaxies that are observed in optical wavelengths. Previous methods to addre…

Search for Primordial Black Holes from the International Space Station with the SQM-ISS detector
Francesca Liberatori, Matteo Battisti, Marco Casolino, Laura Marcelli, Zbigniew Plebaniak, Enzo Reali
https://arxiv.org/abs/2506.10246

Search for Primordial Black Holes from the International Space Station with the SQM-ISS detector
In this paper we discuss the observational capabilities and sensitivity of the SQM-ISS detector to primordial black holes. The SQM-ISS experiment aims to detect slow, non relativistic massive particles within cosmic rays, using a detector on board the International Space Station. The device is designed to recognize the passage of highly penetrating and dense particles in a wide range of mass and charge states such as Strange Quark Matter (SQM). These particles, traveling at speeds typical of gr…

Prediction and control of geometry-induced nematic order in growing multicellular systems
Lukas Hupe, Jonas Isensee, Ramin Golestanian, Philip Bittihn
https://arxiv.org/abs/2506.10867

Prediction and control of geometry-induced nematic order in growing multicellular systems
In densely-packed two-dimensional systems of growing cells, such as rod-shaped bacteria, a number of experimental and numerical studies report distinct patterns of nematic orientational order in the presence of confinement. So far, these effects have been explained using variations of growing active nematic continuum theories, which incorporate feedback between growth-induced active stresses, the resulting material flow and nematic orientation, and were adapted to the specific geometry under in…

Nvidias PC-Prozessor N1X im Geekbench
Erste Einträge in einer Benchmark-Datenbank attestieren Nvidias kommendem N1X 20 CPU-Kerne und mehr als 4 GHz Taktfrequenz.
https://www.heise.de/news/Nvid…

Jaguars rookie Travis Hunter begins splitting time on offense, defense during same practice https://www.nfl.com/news/jaguars-rookie-travis-hunter-begins-splitting-time-on-offense-defense-during-same-practice

Large Time Behavior of the Klein-Gordon-Schr\"{o}digner system
Chanjin You
https://arxiv.org/abs/2506.09863 https://arxiv.org/pd…

Large Time Behavior of the Klein-Gordon-Schrödigner system
We establish the global existence and scattering for small and localized solutions of the Klein-Gordon-Schrödinger system in three dimensions. The system consists of coupled semilinear Schrödinger and Klein-Gordon equations with quadratic nonlinearities. This model is motivated by the study of plasma oscillations arising from the Hartree equation near a translation-invariant equilibrium with the Coulomb potential. Our proof relies on the space-time resonance method. The main difficulty comes …

Replaced article(s) found for hep-ex. https://arxiv.org/list/hep-ex/new/
[1/1]:
Search for a Hidden Sector Scalar from Kaon Decay in the Di-Muon Final State at ICARUS

Counterculture Stars: Slow and Retrograde Stars with Low-Alpha Disk Abundances
Carrie Filion, Michael S. Petersen, Danny Horta, Kathryne J. Daniel, Madeline Lucey, Adrian M. Price-Whelan
https://arxiv.org/abs/2506.09927

Counterculture Stars: Slow and Retrograde Stars with Low-Alpha Disk Abundances
The Milky Way is home to a thin disk that can be defined via kinematics and/or elemental abundances. The elemental abundance-defined thin disk, also called the low-alpha disk, is generally thought to be comprised of stars on planar, circular orbits that approximate the circular velocity curve. While this is an apt description for the majority of stars with thin-disk-like abundances, there are a number of interesting exceptions. In this analysis, we identify and investigate $\sim 70$ stars with …

Replaced article(s) found for physics.soc-ph. https://arxiv.org/list/physics.soc-ph/new/
[1/1]:
Milgram's experiment in the knowledge space: Individual navigation strategies

[2025-06-13 Fri (UTC), 2 new articles found for astro-ph.IM Instrumentation and Methods for Astrophysics]
toXiv_bot_toot

Failure modes of irregular ceramic foam under compression: Development of a new image based strut segmentation strategy
Vinit Vijay Deshpande, Romana Piat
https://arxiv.org/abs/2506.10860

Failure modes of irregular ceramic foam under compression: Development of a new image based strut segmentation strategy
The work investigates the failure modes of the microstructure of an irregular ceramic foam subjected to uniaxial compression loading. The foam material is manufactured using the direct foaming method and has polydispersed pores homogeneously distributed in the microstructure. The effective stress-strain curve and the macroscopic strength of the material differs significantly with the predictions of the Gibson-Ashby model that assumes a regular microstructure. The objective of this work is to de…

Android 16: Google bohrt den Desktopmodus auf
Google hat den Desktopmodus für Android für Entwickler zum Testen mit dem Update von Android 16 QPR1 Beta 2 freigegeben – Pixel 8 oder 9 vorausgesetzt. 
https://www.

On a nonlinear Schr\"odinger-Bopp-Podolsky system in the zero mass case: functional framework and existence
Erasmo Caponio, Pietro d'Avenia, Alessio Pomponio, Gaetano Siciliano, Lianfeng Yang
https://arxiv.org/abs/2506.09752

On a nonlinear Schrödinger-Bopp-Podolsky system in the zero mass case: functional framework and existence
In this paper, we consider in $\mathbb{R}^3$ the following zero mass Schrödinger-Bopp-Podolsky system \[ \begin{cases} -Δu +q^2ϕu=|u|^{p-2}u\\ -Δϕ+a^2Δ^2ϕ=4πu^2 \end{cases} \] where $a>0$, $q\ne 0$ and $p\in (3,6)$. Inspired by [Ruiz, Arch. Ration. Mech. Anal. 198 (2010)], we introduce a Sobolev space $\mathcal{E}$ endowed with a norm containing a nonlocal term. Firstly, we provide some fundamental properties for the space $\mathcal{E}$ including embeddings into Lebesgue space…

A Metallicity Catalog of Very Metal-poor Main-sequence Turn-off and Red Giant Stars from LAMOST DR10
Xiangyu Li, Huiling Chen, Yang Huang, Huawei Zhang, Timothy C. Beers, Linxuan Zhu, Jifeng Liu
https://arxiv.org/abs/2506.09705

A Metallicity Catalog of Very Metal-poor Main-sequence Turn-off and Red Giant Stars from LAMOST DR10
We present a catalog of 8,440 candidate very metal-poor (VMP; [Fe/H] < -2.0) main-sequence turn-off (MSTO) and red giant stars in the Milky Way, identified from low-resolution spectra in LAMOST DR10. More than 7,000 of these candidates are brighter than G ~ 16, making them excellent targets for high-resolution spectroscopic follow-up with 4-10 meter-class telescopes. Unlike most previous studies, we employed an empirical calibration to estimate metallicities from the equivalent widths (EWs) of …

Replaced article(s) found for hep-ex. https://arxiv.org/list/hep-ex/new/
[1/1]:
Search for excited tau leptons in the $\tau\tau\gamma$ final state in proton-proton collisions at...

Replaced article(s) found for astro-ph.IM. https://arxiv.org/list/astro-ph.IM/new/
[1/1]:
Dynamic Diffusion Schr\"odinger Bridge in Astrophysical Observational Inversions

Surface Nematic Quasi-Uniformity
Andrea Pedrini, Epifanio G. Virga
https://arxiv.org/abs/2506.10795 https://arxiv.org/pdf/2506.10795

Surface Nematic Quasi-Uniformity
Line fields on surfaces are a means to describe the nematic order that may pattern them. The least distorted nematic fields are called uniform, but they can only exist on surfaces with negative constant Gaussian curvature. To identify the least distorted nematic fields on a generic surface, we relax the notion of uniformity into that of quasi-uniformity and prove that all such fields are parallel transported (in Levi-Civita's sense) by the geodesics of the surface. Both global and local constru…

heise | Goodbye Chrome: Warum Vivaldi der bessere Browser ist
Vivaldi ist eine clevere Chrome-Alternative: Der Browser bietet viele Funktionen und lässt sich flexibel anpassen. Und Werbe-Tracker blockiert er auch noch.

Formation of stationary interfaces in the fast reaction limit
Yuki Tsukamoto
https://arxiv.org/abs/2506.09716 https://arxiv.org/pdf/2…

Formation of stationary interfaces in the fast reaction limit
We study a two-component reaction-diffusion system in which one of the reaction terms becomes singularly large. Assuming that the initial data are nonnegative and mutually segregated, we prove that the solution converges to that of the heat equation in the nonreactive region, while it remains zero elsewhere. The analysis is based on explicitly constructed barrier functions and a comparison argument adapted to systems with asymmetric reaction terms, which together provide control near the interf…

Deriving physical parameters of unresolved star clusters. IX. Sky background effects in the aperture photometry
Karolis Daugevi\v{c}ius, Rima Stonkut\.e, Eimantas Kri\v{s}\v{c}i\=unas, Erikas Cic\.enas, Vladas Vansevi\v{c}ius
https://arxiv.org/abs/2506.09622

Deriving physical parameters of unresolved star clusters. IX. Sky background effects in the aperture photometry
The aperture photometry method is a powerful tool that enables us to study large star cluster systems efficiently. However, its accuracy depends on various factors, including the stochasticity of the stellar initial mass function and variations in the sky background. Previously, in the eighth paper of this series, we established the best achievable limits of the aperture photometry method for star cluster studies in the local universe. The aim of this study is to determine how the sky backgroun…

XSPECT on-board XPoSat: Calibration and First Results
Rwitika Chatterjee, Koushal Vadodariya, Radhakrishna Vatedka, Vivek Kumar Agrawal, Anurag Tyagi, Kiran M Jayasurya, Shyam Prakash V P, Ramadevi M C, Vaishali S
https://arxiv.org/abs/2506.09918

XSPECT on-board XPoSat: Calibration and First Results
XPoSat is India's first X-ray spectro-polarimetry mission, consisting of two co-aligned instruments, a polarimeter (POLIX) and a spectrometer (XSPECT), to study the X-ray emission from celestial sources. Since polarimetry is a photon-hungry technique, the mission is designed to observe sources for long integration times (~ few days to weeks). This provides an unique opportunity, enabling XSPECT to carry out long-term monitoring of sources, and study their spectro-temporal evolution. To ensure t…

Break-up of an active chiral fluid
Luke Neville, Jens Eggers, Tanniemola B. Liverpool
https://arxiv.org/abs/2506.10534 https://arxiv.…

Break-up of an active chiral fluid
We consider the non-linear dynamics governing the break-up of a two-dimensional strip of active chiral fluid. We observe that the strip thickness goes to zero at the pinch off points as a power law in finite time. Using slender body theory combined with a scaling analysis, we identify a new class of scaling exponents and scaling functions characterizing the speed and shape of break-up in these systems. The scaling analysis is in excellent agreement with direct numerical simulations of the hydro…

KI-Update: Meta- und Apple-KI-News, AR-Brille von Snap, EU-KI-Verordnung
Das "KI-Update" liefert werktäglich eine Zusammenfassung der wichtigsten KI-Entwicklungen.
https://www.

The twisted constant in Calabi-Yau type equation
Genglong Lin
https://arxiv.org/abs/2506.09639 https://arxiv.org/pdf/2506.09639

The twisted constant in Calabi-Yau type equation
In this paper we establish a necessary and sufficient condition for solving a general class of fully nonlinear elliptic equations on compact almost Hermitian manifolds, extending a recent work of Guo-Song. As applications, we determine the twisted constants in Calabi-Yau type equations, including the classical one, Hessian type one and form type one with gradient terms introduced by Popovici and Tosatti-Weinkove. In particular, it addresses a question raised in a work of Chu-Tosatti-Weinkove \c…

Diffuse Interstellar bands and ultraviolet extinction bump: a Milky Way perspective on distant galaxies
R. Lallement
https://arxiv.org/abs/2506.09219 https…

Diffuse Interstellar bands and ultraviolet extinction bump: a Milky Way perspective on distant galaxies
The spectral width wB and the center wavelength lB of the UV absorption bump uvB measured for two z=7 galaxies were found to differ from Milky Way (MW) values. A decrease of wB by 45% and a positive shift of lB by 70-80 Ang were measured. In the MW, the uvB amplitude hB and wB do vary; however, such a narrow bump has never been observed and no variability of lB has been convincingly found. Recently, links have been found between both hB and wB and the strength of several Diffuse Interstellar ab…

The ATLAS Virtual Research Assistant
H. F. Stevance, K. W. Smith, S. J. Smartt, S. J. Roberts, N. Erasmus, D. R. Young, A. Clocchiatti
https://arxiv.org/abs/2506.09778

The ATLAS Virtual Research Assistant
We present the Virtual Research Assistant (VRA) of the ATLAS sky survey which performs preliminary eyeballing on our clean transient data stream. The VRA uses Histogram Based Gradient Boosted Decision Tree Classifiers trained on real data to score incoming alerts on two axes: "Real" and "Galactic". The alerts are then ranked using a geometric distance such that the most "Real" and "Extra-galactic" receive high scores; the scores are updated when new light curve data is obtained on subsequent vi…

Statistical mechanics of fluids with hidden degrees of freedom
Masanari Shimada, Tetsuya J. Kobayashi
https://arxiv.org/abs/2506.10253 https://

Statistical mechanics of fluids with hidden degrees of freedom
Although coarse-grained models have been widely used to explain exotic phenomena in complex fluids, such as droplet formation in living cells, these conventional approaches often fail to capture the intricate microscopic degrees of freedom that such fluids inherently possess. In this study, we propose a model that incorporates distinct microscopic degrees of freedom and their interactions, without directly relying on conventional coarse-grained descriptions. By introducing two key assumptions, …

Fußball-Abo: Wow Live-Sport von Sky wird teurer
Sky erhöht den Preis für seinen Streaming-Dienst Wow: Das Live-Sport-Abonnement kostet monatlich bald 9 Euro mehr.
https://www.heise.…

Der OpenAI-Chef Sam Altman glaubt, dass ChatGPT heute schon mächtiger ist als jeder Mensch, der jemals gelebt hat. Er verweist darauf, dass sich Hunderte Millionen Menschen täglich auf den Chatbot verlassen. 🤖
Zum Artikel: https://heise.de/-10439804…

Existence of variational solutions to doubly nonlinear systems in general noncylindrical domains
Leah Sch\"atzler, Christoph Scheven, Jarkko Siltakoski, Calvin Stanko
https://arxiv.org/abs/2506.09617

Existence of variational solutions to doubly nonlinear systems in general noncylindrical domains
We consider the Cauchy-Dirichlet problem to doubly nonlinear systems of the form \begin{align*} \partial_t \big( |u|^{q-1}u \big) - \operatorname{div} \big( D_ξf(x,u,Du) \big) = - D_u f(x,u,Du) \end{align*} with $q \in (0, \infty)$ in a bounded noncylindrical domain $E \subset \mathbb{R}^{n+1}$. Further, we suppose that $x \mapsto f(x,u,ξ)$ is integrable, that $(u,ξ) \mapsto f(x,u,ξ)$ is convex, and that $f$ satisfies a $p$-growth and -coercivity condition for some $p>\max \big\…

Dynamics of low-mass black hole seeds in the BRAHMA simulations using subgrid-dynamical friction: Impact on merger-driven black hole growth in the high redshift Universe
Aklant K. Bhowmick, Laura Blecha, Luke Z. Kelley, Aneesh Sivasankaran, Paul Torrey, Rainer Weinberger, Nianyi Chen, Mark Vogelsberger, Lars Hernquist, Priyamvada Natarajan
https://…

Dynamics of low-mass black hole seeds in the BRAHMA simulations using subgrid-dynamical friction: Impact on merger-driven black hole growth in the high redshift Universe
We analyze the dynamics of low-mass black hole (BH) seeds in the high-redshift ($z\gtrsim5$) Universe using a suite of $[4.5~\mathrm{Mpc}]^3$ and $[9~\mathrm{Mpc}]^3$ BRAHMA cosmological hydrodynamic simulations. The simulations form seeds with mass $M_{\mathrm{seed}}=2.2\times10^3~M_{\odot}$ in halos that exceed critical thresholds of dense & metal-poor gas mass ($5-150~M_{\mathrm{seed}}$) and the halo mass ($1000-10000~M_{\mathrm{seed}}$). While the initial BRAHMA boxes pinned the BHs to the …

Mitigating antenna gain errors with HyFoReS in CHIME simulations
Haochen Wang, Panupong Phoompuang, Kiyoshi W. Masui, Arnab Chakraborty, Simon Foreman
https://arxiv.org/abs/2506.09170

Mitigating antenna gain errors with HyFoReS in CHIME simulations
Hybrid Foreground Residual Subtraction (HyFoReS) is a new family of algorithms designed to remove systematics-induced foreground contamination for 21-cm intensity mapping data. Previously, the algorithm was shown to be effective in mitigating beam perturbations in sky maps from the Canadian Hydrogen Intensity Mapping Experiment (CHIME). In this study, we apply HyFoReS to CHIME simulations and test the algorithm's ability to mitigate antenna gain-type systematics in polarized visibilities. Simul…

[2025-06-13 Fri (UTC), 5 new articles found for cond-mat.soft Soft Condensed Matter]
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Großbritannien: Medienaufsicht prüft mögliche Gesetzesverstöße bei 4chan
Die Ofcom hat Beschwerden erhalten, dass auf dem berüchtigten Image-Board 4chan Illegales passiere und deshalb eine Untersuchung eingeleitet.

Slowly oscillating periodic solutions in a nonlinear Volterra equation with non-symmetric feedback
Quentin Griette, Franco Herrera
https://arxiv.org/abs/2506.09564

Slowly oscillating periodic solutions in a nonlinear Volterra equation with non-symmetric feedback
In this work we study a nonlinear Volterra equation with non-symmetric feedback that arises as a particular case of the Gurtin-MacCamy model in population dynamics. We are particularly interested in the existence of slowly oscillating periodic solutions when the trivial stationary state is unstable. Here the absence of symmetry of the nonlinearity prevents the use of many traditional strategies to obtain a priori estimates on the solution. Without a precise knowledge of the period of the soluti…

Born to be Starless: Revisiting the Missing Satellite Problem
Seyoung Jeon, Sukyoung K. Yi, Emanuele Contini, Yohan Dubois, San Han, Katarina Kraljic, Sebastien Peirani, Christophe Pichon, Jinsu Rhee
https://arxiv.org/abs/2506.09152

Born to be Starless: Revisiting the Missing Satellite Problem
The massive Local Group galaxies both host substantially fewer satellites than the subhalos expected from the cold dark matter paradigm, and the recent investigations have highlighted the interplay between baryons and dark matter. We investigate the processes that make subhalos starless, using high-resolution cosmological simulations. We found that the number of satellites around Milky Way analogs closely aligns with observations, which accords with recent studies. In our simulations, the major…

[2025-06-12 Thu (UTC), 3 new articles found for astro-ph.IM Instrumentation and Methods for Astrophysics]
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Replaced article(s) found for cond-mat.soft. https://arxiv.org/list/cond-mat.soft/new/
[1/1]:
Exploring water's no-man's land

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Displacement of three-phase flow for Heavy Oil: Riemann Solutions
Luis Fernando Lozano, Furtado Frederico, De Souza Aparecido, Marchesin Dan
https://arxiv.org/abs/2506.09077

Displacement of three-phase flow for Heavy Oil: Riemann Solutions
This work presents the Riemann solution for three-phase flow in porous media under the condition that oil viscosity exceeds that of water and gas. We classify all Riemann solution problems for scenarios where the left states $L$ lie along the edge $G$-$W$, and the right states $R$ span nearly the entire saturation triangle, excluding small regions near the boundaries $G$-$O$ and $W$-$O$. We use the wave curve method to determine the Riemann solution for initial and injection data within the abo…

Secular Attrition of Classical Bulges by Stellar Bars
Rachel Lee McClure, Tobias G\'eron, Elena D'Onghia, Angus Beane, Aaryan Thusoo, Kathryne J. Daniel, Carrie Filion, Scott Lucchini
https://arxiv.org/abs/2506.09150

Secular Attrition of Classical Bulges by Stellar Bars
Classical bulges and stellar bars are common features in disk galaxies and serve as key tracers of galactic evolution. Angular momentum exchange at bar resonances drives secular morphological changes throughout the disk, including bar slowing and lengthening, and affects the structure of accompanying bulges. In this study, using a suite of N-body simulations, we quantify the secular reconfiguration of classical bulges through resonant trapping by evolving stellar bars. We use orbital frequency …

[2025-06-12 Thu (UTC), 9 new articles found for math.AP Analysis of PDEs]
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Beyond Traditional Diagnostics: Identifying Active Galactic Nuclei with Spectral Energy Distribution Fitting in DESI Data
M. Siudek, M. Mezcua, C. Circosta, C. Maraston, J. Moustakas, H. Zou, J. Aguilar, S. Ahlen, D. Bianchi, D. Brooks, T. Claybaugh, K. S. Dawson, A. de la Macorra, Arjun Dey, P. Doel, J. E. Forero-Romero, E. Gazta\~naga, S. Gontcho A Gontcho, G. Gutierrez, M. Ishak, S. Juneau, D. Kirkby, T. Kisner, A. Kremin, A. Lambert, M. Landriau, L. Le Guillou, A. Meisner, R. Mique…

Beyond Traditional Diagnostics: Identifying Active Galactic Nuclei with Spectral Energy Distribution Fitting in DESI Data
Active galactic nuclei (AGN) are typically identified through their distinctive X-ray or radio emissions, mid-infrared (MIR) colors, or emission lines. However, each method captures different subsets of AGN due to signal-to-noise (SNR) limitations, redshift coverage, and extinction effects, underscoring the necessity for a multi-wavelength approach for comprehensive AGN samples. This study explores the effectiveness of spectral energy distribution (SED) fitting as a robust method for AGN identi…

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Replaced article(s) found for math.AP. https://arxiv.org/list/math.AP/new/
[1/1]:
Non-radial Blow-up for a mass-critical fourth-order inhomogeneous nonlinear Schr\"odinger equation

Mergers of galaxies
Sugata Kaviraj
https://arxiv.org/abs/2506.09136 https://arxiv.org/pdf/2506.09136…

Mergers of galaxies
The evolution of our Universe is strongly influenced by the attractive force of gravity. A key aspect of this evolution, therefore, is the merging of galaxies. Here, we explore the role of mergers in shaping the properties of massive galaxies over cosmic time. Observational methods of finding mergers include identifying galaxy pairs in close proximity, visual inspection of galaxy images to identify signatures of mergers (e.g. tidal features) and using morphological parameters such as Asymmetry …

Constraining resolved extragalactic $R_{21}$ variation with well calibrated ALMA observations
Jakob den Brok, Elias K. Oakes, Adam K. Leroy, Eric W. Koch, Antonio Usero, Erik W. Rosolowsky, Frank Bigiel, Jiayi Sun, Hao He, Ashley T. Barnes, Yixian Cao, Fu-Heng Liang, Hsi-An Pan, Toshiki Saito, Sumit K. Sarbadhicary, Thomas G. Williams
https://…

Constraining resolved extragalactic $R_{21}$ variation with well calibrated ALMA observations
CO(1-0) and CO(2-1) are commonly used as bulk molecular gas tracers. The CO line ratios (especially CO(2-1)/CO(1-0) - $R_{21}$) vary within and among galaxies, yet previous studies on $R_{21}$ and alike often rely on measurements constructed by combining data from facilities with substantial relative calibration uncertainties that have the same order as physical line ratio variations. Hence robustly determining systematic $R_{21}$ variations is challenging. Here, we compare CO(1-0) and CO(2-1) …

The hot circumgalactic medium in stacked X-rays: observations vs simulations
Skylar Grayson, Evan Scannapieco, Johan Comparat, John A. ZuHone, Yi Zhang, Soumya Shreeram, Marcus Bruggen, Esra Bulbul
https://arxiv.org/abs/2506.09123

The hot circumgalactic medium in stacked X-rays: observations vs simulations
Current cosmological simulations rely on active galactic nuclei (AGN) feedback to quench star formation and match observed stellar mass distributions, but models for AGN feedback are poorly constrained. The circumgalactic medium (CGM) provides a helpful laboratory to study this process, as its metallicity, temperature, and density distributions are directly impacted by AGN. Recent observations from the eROSITA instrument provide constraints on these distributions through measurements of extende…

Tiny galaxies and dark substructures: exploring the "dark" subhaloes in TNG50
Jessica E. Doppel, Mathilde Jauzac, David J. Lagattuta, Azadeh Fattahi, Guillaume Mahler
https://arxiv.org/abs/2506.09122

Tiny galaxies and dark substructures: exploring the "dark" subhaloes in TNG50
Dark matter haloes and subhaloes that host no luminous counterpart are predicted within our current understanding of galaxy formation within a $Λ$CDM paradigm. Observational tests, such as gravitational lensing, have made potential detections of such objects around individual galaxies as well as in galaxy groups and clusters. The question of whether or not a dim counterpart might reside in these objects remains an open question. We investigate this point using the TNG50-1 simulation of the Ill…

Bar-driven dispersal of Galactic substructure
Adam M. Dillamore, Jason L. Sanders
https://arxiv.org/abs/2506.09117 https://arxiv.org/…

Bar-driven dispersal of Galactic substructure
Galactic archaeologists often assume that integrals of motion (IoMs) such as $L_z$ and $E$ are conserved, so substructure remains frozen in IoM space over many Gyr. However, this is not true in the Milky Way due in part to its rotating bar. In this study we quantify the effects of the bar on the dynamics of substructure. We employ three different theoretical models: an analytical toy model; a set of test particle simulations with steady and slowing bars; and a cosmological zoom-in simulation of…

Properties of $\mathrm{H_2O}$ masers and their associated sources in Sagittarius B2
Nazar Budaiev, Adam Ginsburg, Ciriaco Goddi, \'Alvaro S\'anchez-Monge, Anika Schmiedeke, Desmond Jeff, Peter Schilke, Christopher De Pree
https://arxiv.org/abs/2506.09115

Properties of $\mathrm{H_2O}$ masers and their associated sources in Sagittarius B2
We present high-resolution Karl G. Jansky Very Large Array observations of the 22 GHz $\mathrm{H_2O}$ maser line in the extended Sagittarius B2 cloud. We detect 499 $\mathrm{H_2O}$ masers across the observed velocities between -39 and 172 km s$^{-1}$. To investigate the nature of the masers, we analyze their spatial distribution and cross-match with catalogs of HII regions and protostellar cores. 62% of masers are associated with protostellar cores and 32% with HII regions. The nature of the re…

[2025-06-12 Thu (UTC), 15 new articles found for astro-ph.GA Astrophysics of Galaxies]
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