Tootfinder

Magnetic Reconnection as a Potential Driver of X-ray Variability in Active Galactic Nuclei
Chen-Ran Hu, Yong-Feng Huang, Lang Cui, Hanle Zhang, Jiang-Tao Li, Li Ji, Jin-Jun Geng, Orkash Amat, Fan Xu, Chen Du, Wen-Long Zhang, Ze-Cheng Zou, Xiao-Fei Dong, Chen Deng, Pengfei Jiang, Jie Liao
https://arxiv.org/abs/2509.12978

Magnetic Reconnection as a Potential Driver of X-ray Variability in Active Galactic Nuclei
We present a systematic analysis on the X-ray variability in 13 bright quasars at z > 4.5, combining recent Swift observations from 2021 to 2023 and archival multi-epoch observations. Upper limits of the luminosity measurements were included in the analysis by using the Kaplan-Meier estimator method. It is found that the high-z quasars exhibit X-ray variability on both short-term (hours-to-days) and intermediate-term (weeks-to-months) timescales, with short-term variability dominating the overa…

Radio detection of Cosmic Rays with the IceCube Surface Array Enhancement
Megha Venugopal (for the IceCube Collaboration)
https://arxiv.org/abs/2509.13033 https://

Radio detection of Cosmic Rays with the IceCube Surface Array Enhancement
The surface array of the IceCube Neutrino Observatory, IceTop, measures cosmic rays in the PeV-EeV primary energy range. Stations comprising radio antennas and scintillation detectors will be added to enhance the existing surface detectors. A prototype station, consisting of eight scintillation detectors and three radio antennas, has been in operation in with the instrumentation in final design since the beginning of 2023. Radio signals from air showers are measured by antennas that are read-ou…

Propeller effect in action: unveiling quenched accretion in the transient X-ray pulsar 4U 0115 63
Hua Xiao, Sergey S. Tsygankov, Valery F. Suleimanov, Alexander A. Mushtukov, Long Ji, Juri Poutanen
https://arxiv.org/abs/2509.09860

Propeller effect in action: unveiling quenched accretion in the transient X-ray pulsar 4U 0115+63
The Be/X-ray pulsar 4U 0115+63 underwent a type II outburst in 2023. After the outburst, similar to the outbursts in 2015 and 2017, the source decayed into a quiescent state. Two out of three XMM-Newton observations conducted after the 2023 outburst confirmed the source to be in a low-luminosity state at a level of $L_{\rm X} \sim 10^{33}\,\rm erg\,s^{-1}$. X-ray pulsations were detected at $\approx$0.277 Hz in both observations with a pulsed fraction exceeding 50%. The power density spectra sh…

Einige der zuletzt hier besonders häufig geteilten #News:
Ãœberwachung: Strafverfolger setzen erneut mehr Staatstrojaner ein

Superconformal symmetry in a class of Schellekens theories
Harry Fosbinder-Elkins, Jeffrey A. Harvey
https://arxiv.org/abs/2509.08941 https://arxiv.org/pdf…

Superconformal symmetry in a class of Schellekens theories
In 2023, Moore and Singh used the theory of orbifold vertex operator algebras to explicitly construct an $\mathcal{N} = 1$ supercurrent in the Beauty and the Beast module of Dixon, Ginsparg, and Harvey. Using their techniques, we show that $\mathcal{N} = 1$ superconformal symmetry exists in all VOAs constructed as spin lifts of canonical $\mathbb{Z}_2$ orbifolds of Niemeier lattice VOAs.

Caleb Williams reacts after Bears' collapse in fourth-quarter letdown against Vikings in season opener

https://www.cbssports.com/nfl/news/caleb-w

Das war schockierend ahnungslos: Esra Limbacher ist direkt gewählter Wahlkreisabgeordneter und seit 2021 im Bundestag und dort stellv. Vorsitzender der SPD-Bundestagsfraktion. Er ist zudem seit 2023 Generalsekretär der SPD Saarland.
Was er gerade im Deutschlandfunk zum Klimaschutz gesagt hat - oder nicht sagen konnte, sollte der SPD Sorgen machen. Hört selbst:

Beschleunigung des Klimawandels? Interview Esra Limbacher, SPD-Fraktions-Vize

spanish_highschools: Spanish high schools (2023)
Directed networks of friendships obtained through a social survey of spanish high school students.
This network has 409 nodes and 8557 edges.
Tags: Social, Offline, Weighted, Metadata
https://networks.skewed.de/net/spanish

Anzahl der installierten #Windkraftanlagen pro Jahr in Deutschland mit Stand vom 26.07.2025.
Zählung der Anlagen mit Inbetriebnahmedatum. Der aktuelle Betriebsstatus wird nicht berücksichtigt.
Der Datenbestand enthält ggf. unplausible Datensätze.
Anmerkung: Erster Versuch einer #Datenanalyse

Integrating Mechanistic Modeling and Machine Learning to Study CD4 /CD8 CAR-T Cell Dynamics with Tumor Antigen Regulation
Saranya Varakunan, Melissa Stadt, Mohammad Kohandel
https://arxiv.org/abs/2509.19536

Integrating Mechanistic Modeling and Machine Learning to Study CD4+/CD8+ CAR-T Cell Dynamics with Tumor Antigen Regulation
Chimeric antigen receptor (CAR) T cell therapy has shown remarkable success in hematological malignancies, yet patient responses remain highly variable and the roles of CD4 and CD8 subsets are not fully understood. We present an extended mathematical framework of CAR-T cell dynamics that explicitly models CD4 helper and CD8 cytotoxic lineages and their interactions with tumor antigen burden. Building on the Kirouac et al. (2023) model of antigen-regulated memory, effector, and exhaustion transi…

Raiders claim DT Keondre Coburn https://www.raiders.com/news/raiders-claim-keondre-coburn-dt-nfl-waivers-2025-training-camp-transactions

Revisiting H\"otte (2025): A Companion Analysis with Extended Evidence from UK Inter-Industry Payment Data, 2017-2024
Kerstin H\"otte
https://arxiv.org/abs/2508.17695 …

Revisiting Hötte (2025): A Companion Analysis with Extended Evidence from UK Inter-Industry Payment Data, 2017-2024
In 2025, the UK Office for National Statistics released a novel dataset of monthly inter-industry payment flows during January 2017 to November 2024 at the 5-digit SIC level (ONS, 2025a), covering $>$3.1 million UK organizations. Annual aggregates amount to 490 million transactions with an aggregate value of over £3.1 trillion in 2023. Such publicly available data are unprecedented by their granularity and timeliness, providing a rich basis for economic research and real-time policy advice. HÃ…

Energy-dependent anisotropy of cosmic-ray muons: A twelve-year study with IceCube Neutrino Observatory
Nabin Upadhya Dhakal, Nabin Bhusal, Manjeet Kunwar, Manil Khatiwada, Shiv Narayan Yadav
https://arxiv.org/abs/2508.01194

Energy-dependent anisotropy of cosmic-ray muons: A twelve-year study with IceCube Neutrino Observatory
We present a comprehensive, energy-resolved study of cosmic-ray muon anisotropy using 12 years (2011-2023) of data from the IceCube Neutrino Observatory, comprising 7.92 x 10^11 events in the 13 TeV to 5.3 PeV energy range. Dividing the spectrum at log-scale energy 5 GeV, we contrast low- and high-energy anisotropy features via sidereal modulation, angular profiles, Fourier analysis, and full-sky HEALPix mapping. Gaussian and power-law fits to energy distributions are evaluated using chi-square…

A Dormant Captured Oort Cloud Comet Awakens: (18916) 2000 OG44
Colin Orion Chandler, William J. Oldroyd, Chadwick A. Trujillo, Dmitrii E. Vavilov, William A. Burris
https://arxiv.org/abs/2507.21324

A Dormant Captured Oort Cloud Comet Awakens: (18916) 2000 OG44
We report the discovery of activity emanating from (18916) 2000 OG44 (alternately designated 1977 SD), a minor planet previously reported to be both an extinct comet or an asteroid on a cometary orbit. We observed 2000 OG44 with a thin tail oriented towards the coincident anti-solar and anti-motion vectors (as projected on the sky) in images we acquired on UT 2023 July 24 and 26 with the Apache Point Observatory 3.5-meter Astrophysical Research Consortium telescope (New Mexico, USA). We also in…

Daily fluctuations propagate damply through a black hole accretion disk
Han He, Yi Long, Bei You, Fu-Guo Xie, Zhen Yan, Andrzej A. Zdziarski, Sai-En Xu
https://arxiv.org/abs/2508.01384

Daily fluctuations propagate damply through a black hole accretion disk
Propagating fluctuations within accretion disks are known to induce multi-wavelength variability across diverse timescales. While these fluctuations have been widely invoked to explain rapid timing phenomena within the inner disk region in the frequency domain, observational signatures of outer-disk fluctuations propagating in the time domain remain sparse. Here, we present an analysis of observations by the Hard X-ray Modulation Telescope (HXMT) during the 2023 outburst of the newly discovered…

Contemplative Music – Seeking Joy & Finding Bliss #composer #contemplation #indiemusic #music

Contemplative Music - Seeking Joy & Finding Bliss
Stan Stewart - @muz4now

Raiders claim DT Keondre Coburn https://www.raiders.com/news/raiders-claim-keondre-coburn-dt-nfl-waivers-2025-training-camp-transactions

Multi-wavelength Study of HESS J0632 057: New Insights into Pulsar-Disk Interaction
Jaegeun Park (Chungbuk National University), Hongjun An (Chungbuk National University), Chanho Kim (Chungbuk National University), Natalie Matchett (University of the Free State), Kaya Mori (Columbia University), Brian van Soelen (University of the Free State), VERITAS Collaboration, :, A. Archer, P. Bangale, J. T. Bartkoske, W. Benbow, J. H. Buckley, Y. Chen, A. J. Chromey, A. Duerr, M. Errando, M. Es…

Multi-wavelength Study of HESS J0632+057: New Insights into Pulsar-Disk Interaction
We present an analysis of new multi-wavelength observations of the TeV gamma-ray binary HESS J0632+057, conducted using SALT, Swift, NuSTAR, and VERITAS in 2023--2024. By combining these new data with archival observations, we confirm previous suggestions of orbital variability in the source's X-ray spectrum, including increased X-ray absorption at the orbital phase interval of $ϕ\approx0.3\textrm{--}0.4$. The source's X-ray flux within this phase interval seems to have exhibited a significant…

In Memory of Tom – mentor and friend #grief #improvpiano #piano #pianoimprov

In Memory of Tom - mentor and friend
Stan Stewart - @muz4now