Tootfinder

Extreme AGN feedback in the fossil galaxy group SDSSTG 4436
D. Eckert, F. Gastaldello, L. Lovisari, S. McGee, T. Pasini, M. Brienza, K. Kolokythas, E. O'Sullivan, A. Simionescu, M. Sun, M. Ayromlou, M. A. Bourne, Y. Chen, W. Cui, S. Ettori, A. Finoguenov, G. Gozaliasl, R. Kale, F. Mernier, B. D. Oppenheimer, G. Schellenberger, R. Seppi, E. Tempel

Extreme AGN feedback in the fossil galaxy group SDSSTG 4436
Supermassive black hole feedback is the currently favoured mechanism to regulate the star formation rate of galaxies and prevent the formation of ultra-massive galaxies ($M_\star>10^{12}M_\odot$). However, the mechanism through which the outflowing energy is transferred to the surrounding medium strongly varies from one galaxy evolution model to another, such that a unified model for AGN feedback does not currently exist. The hot atmospheres of galaxy groups are highly sensitive laboratories of…

Magnetosonic Waves as a Driver of Observed Temperature Fluctuation Patterns in AGN Accretion Disks
Ish Kaul, Omer Blaes, Yan-Fei Jiang, Lizhong Zhang
https://arxiv.org/abs/2506.11189

Magnetosonic Waves as a Driver of Observed Temperature Fluctuation Patterns in AGN Accretion Disks
Recent observations have revealed slow, coherent temperature fluctuations in AGN disks that propagate both inward and outward at velocities of $\sim 0.01 - 0.1c$, a kind of variability that is distinct from reverberation (mediated by the reprocessing of light) between different regions of the disk. We investigate the origin and nature of these fluctuations using global 3D radiation-magnetohydrodynamic simulations of radiation and magnetic pressure-dominated AGN accretion disks. Disks with a sig…

Performance Analysis of Communication Signals for Localization in Underwater Sensor Networks
Ashwani Koul, Gustaf Hendeby, Isaac Skog
https://arxiv.org/abs/2506.13330

Performance Analysis of Communication Signals for Localization in Underwater Sensor Networks
Fusion of passive and active measurements from sensor nodes becomes critical in localizing underwater objects and is traditionally achieved by communicating information to a central node. This causes significant inefficiencies in bandwidth, energy, and processing time, which are critical in marine applications. With integrated sensing and communication (ISAC) systems, the process of sensing, localization, and communication can be achieved jointly, and the inefficiencies can be minimized. Thus, …

Hawaii’s Kilauea Volcano erupts again with lava reaching more than 330 feet | The Independent
https://www.independent.co.uk/news/world/americas/hawaii-kilauea-volcano-erupts-lava-b2768499.html

"I Said Things I Needed to Hear Myself": Peer Support as an Emotional, Organisational, and Sociotechnical Practice in Singapore
Kellie Yu Hui Sim, Kenny Tsu Wei Choo
https://arxiv.org/abs/2506.09362

"I Said Things I Needed to Hear Myself": Peer Support as an Emotional, Organisational, and Sociotechnical Practice in Singapore
Peer support plays a vital role in expanding access to mental health care by providing empathetic, community-based support outside formal clinical systems. As digital platforms increasingly mediate such support, the design and impact of these technologies remain under-examined, particularly in Asian contexts. This paper presents findings from an interview study with 20 peer supporters in Singapore, who operate across diverse online, offline, and hybrid environments. Through a thematic analysis,…

Trade Again? Cowboys seen as potential suitors for $33 million TE who may be on market https://cowboyswire.usatoday.com/story/sports/nfl/cowboys/2025/05/31/cowboys-potential-fit-kyle-pitts-trade-falcons/839…

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https://www.noz.de/lokales/osnabrueck/artikel/suedlaendisches-aussehen-wann-die-presse-die-taeterherkunft-nennt-48662764
Auch die Polizei vermittelt immer wieder den Eindruck, sie verfüge üb…

Finished #StarWars #Andor #S2?
Watch all 12 episodes again... this time with your YouTube friends, Kyle Katarn, Wave Squadron, Cinepals, Heroes Reforged, Struggle Nation, Jedi Jive... all mixed together…

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…

AGNBoost: A Machine Learning Approach to AGN Identification with JWST/NIRCam MIRI Colors and Photometry
Kurt Hamblin, Allison Kirkpatrick, Bren E. Backhaus, Gregory Troiani, Fabio Pacucci, Jonathan R. Trump, Alexander de la Vega, L. Y. Aaron Yung, Jeyhan S. Kartaltepe, Dale D. Kocevski, Anton M. Koekemoer, Erini Lambrides, Casey Papovich, Kaila Ronayne, Guang Yang, Pablo Arrabal Haro, Micaela B. Bagley, Mark Dickinson, Steven L. Finkelstein, Nor Pirzkal

AGNBoost: A Machine Learning Approach to AGN Identification with JWST/NIRCam+MIRI Colors and Photometry
We present AGNBoost, a machine learning framework utilizing XGBoostLSS to identify AGN and estimate redshifts from JWST NIRCam and MIRI photometry. AGNBoost constructs 121 input features from 7 NIRCam and 4 MIRI bands-including magnitudes, colors, and squared color terms-to simultaneously predict the fraction of mid-IR $3-30\,μ$m emission attributable to an AGN power law (frac$_\text{AGN}$) and photometric redshift. Each model is trained on a sample of $10^6$ simulated galaxies from CIGALE pro…