Results 31 to 40 of about 321 (139)

3D Radiation Hydrodynamic Simulations of Gravitational Instability in AGN Accretion Disks: Effects of Radiation Pressure

The Astrophysical Journal, 2023
We perform 3D radiation hydrodynamic local shearing-box simulations to study the outcome of gravitational instability (GI) in optically thick active galactic nuclei (AGNs) accretion disks.
Yi-Xian Chen, Yan-Fei Jiang, Jeremy Goodman, Eve C. Ostriker   +3 more
doaj   +1 more source

Vibrio Community Structure Shapes the Diversity of Carbenicillin‐Hydrolysing Class A β‐Lactamase Circulating in European Coastal Environments

Environmental Microbiology, Volume 28, Issue 8, August 2026.
Vibrio communities shape carbenicillinase diversity in European coasts. Sediments serve as reservoirs of antibiotic‐resistant Vibrio alginolyticus, which can move into the water column and accumulate in bivalves. This spreads β‐lactamase resistance and raises human exposure risks to antibiotic‐resistant pathogenic Vibrio, especially as higher seawater ...
Berenice Reggiardo, Jamal Saad, Marie‐Agnès Travers, Yannick Labreuche, David Goudenège, Eve Toulza, Coralie Broquard, Karl B. Andree, Julia Mougin, Nicolas Argenta, Gaëlle Courtay, Juliette Pouzadoux, Océane Romatif, Audrey Caro, Dolors Furones, Luigi Vezzulli, Gianluca Corno, Andrea Di Cesare, Ignasi Gairin, Bruno Petton, K. Mathias Wegner, Caroline Montagnani, Viviane Boulo, Delphine Destoumieux‐Garzón   +23 more
wiley   +1 more source

A Face-on Accretion Disk Geometry Revealed by Millimeter-wave Periodicity in Sgr A∗

The Astrophysical Journal
We analyzed 77 epochs of Atacama Large Millimeter/submillimeter Array archival data to investigate flux variability in Sagittarius A ^∗ , the supermassive black hole at the Galactic center.
Kazuki Yanagisawa, Tomoharu Oka, Ryo Ariyama, Kazuki Yanagihara, Yuhei Iwata, Mikiya M. Takahashi   +5 more
doaj   +1 more source

Raman analysis of organic refractory materials after energetic processing: Evidence for amorphous carbon on TNOs and comets

Meteoritics &Planetary Science, Volume 61, Issue 8, Page 1994-2015, August 2026.
Abstract Amorphous carbon (αC) is found in various extraterrestrial particles, including those thought to originate from the outer Solar System. αC can form through two main processes involving C‐rich materials: exposure to energetic charged particles and thermal processing.
M. Germanà, A. Vyjidak, G. A. Baratta, B. M. Giuliano, R. G. Urso, C. Scirè, D. Fulvio, T. Grassi, P. Jusko, P. Caselli, M. E. Palumbo   +10 more
wiley   +1 more source

Hydro-Gravitational Dynamics of Planets and Dark Energy

Journal of Applied Fluid Mechanics, 2009
Self gravitational fluid mechanical methods termed hydro-gravitational-dynamics (HGD) predict plasma fragmentation 0.03 Myr after the turbulent big bang to form protosuperclustervoids, turbulent protosuperclusters, and protogalaxies at the 0.3 Myr ...
Carl H. Gibson, R.E, Schild
doaj  

Evidence for Multiple Orbiting Hotspots in the 340 GHz Variability of Sgr A*

The Astrophysical Journal Letters
We analyzed 11 epochs of archival Atacama Large Millimeter/submillimeter Array (ALMA) data to investigate the flux density variability of Sgr A* at 340 GHz. In one epoch, the light curve exhibits two short-timescale components with characteristic periods
Kazuki Yanagisawa, Tomoharu Oka, Tatsuya Kotani, Ryo Ariyama, Kazuki Yanagihara, Yuhei Iwata   +5 more
doaj   +1 more source

GRB 191019A: A Short Gamma-Ray Burst in Disguise from the Disk of an Active Galactic Nucleus

The Astrophysical Journal Letters, 2023
Long and short gamma-ray bursts (GRBs), canonically separated at around 2 s duration, are associated with different progenitors: the collapse of a massive star and the merger of two compact objects, respectively. GRB 191019A was a long GRB ( T _90 ∼ 64 s)
Davide Lazzati, Rosalba Perna, Benjamin P. Gompertz, Andrew J. Levan   +3 more
doaj   +1 more source

A Review of Failure Modes and Safety Strategies of Lithium‐Ion Batteries from Materials to Systems

Advanced Science, Volume 13, Issue 42, 28 July 2026.
A cascade‐aware framework is presented for lithium‐ion battery safety, linking thermal runaway initiation, acceleration, runaway reaction, and propagation with material‐, cell/pack‐, and system‐level interventions. By integrating failure mechanisms, quantitative safety indicators, and staged interception strategies, this review highlights how safer ...
Jin Hyeok Yang, Jae Yoon Sung, Hyunji Kweon, Seohyun Kim, Byunghoon Kim, Jongsoon Kim, Junyoung Mun, Jung Ho Kim, Ki Jae Kim   +8 more
wiley   +1 more source

AT 2020nov: Evidence for Disk Reprocessing in a Rare Tidal Disruption Event

The Astrophysical Journal
We present a detailed analysis of AT 2020nov, a tidal disruption event (TDE) in the center of its host galaxy, located at a redshift of z = 0.083. AT 2020nov exhibits unique features, including double-peaked Balmer emission lines, a broad UV/optical ...
Nicholas Earl, K. Decker French, Enrico Ramirez-Ruiz, Katie Auchettl, Sandra I. Raimundo, Kyle W. Davis, Megan Masterson, Iair Arcavi, Wenbin Lu, Vivienne F. Baldassare, David A. Coulter, Thomas de Boer, Maria R. Drout, Hannah Dykaar, Ryan J. Foley, Christa Gall, Hua Gao, Mark E. Huber, David O. Jones, Danial Langeroodi, Chien-Cheng Lin, Eugene A. Magnier, Brenna Mockler, Margaret Shepherd, Margaret E. Verrico   +24 more
doaj   +1 more source

Noble gases and nitrogen in material from asteroid Bennu

Meteoritics &Planetary Science, Volume 61, Issue 7, Page 1593-1609, July 2026.
Abstract We report the elemental and isotopic abundances of all stable noble gases (helium, neon, argon, krypton, and xenon) in eight particles from asteroid Bennu returned by NASA's OSIRIS‐REx mission. We also report nitrogen abundances and isotopic ratios that were analyzed alongside neon and argon in four additional Bennu particles.
B. Marty, L. Zimmermann, E. Füri, D. V. Bekaert, J. J. Barnes, A. N. Nguyen, H. C. Connolly, D. S. Lauretta   +7 more
wiley   +1 more source