Results 91 to 100 of about 56,013 (217)

Exploring the Spin Dependence on Mass Inclination and Distance for the Newly Discovered Black Hole X-Ray Binary Swift J151857.0–572147

The Astrophysical Journal
The black hole X-ray binary Swift J151857.0−572147 was discovered during its first outburst in 2024 March. We review the archive of NICER observations from this outburst, focusing on the soft states.
Yujia Song, James F. Steiner, Tong Zhao, Yuexin Zhang, Ningyue Fan, Ole König, Santiago Ubach Ramirez, Josephine Wong, Lijun Gou, Javier A. Garcia   +9 more
doaj   +1 more source

Nonlinear electrodynamics effects on the geometry, thermodynamics, and quantum dynamics of (2+1)-dimensional black holes

Nuclear Physics B
Black holes in (2+1) dimensions serve as valuable toy models for understanding key aspects of real astrophysical black holes, providing insights into quantum gravity and thermodynamic properties.
Erdem Sucu, İzzet Sakallı
doaj   +1 more source

A note on the resonant frequencies of rapidly rotating black holes

, 2004
I discuss the range of validity of Detweiler's formula for the resonant frequencies of rapidly rotating Kerr black holes. While his formula is correct for extremal black holes, it has also been commonly accepted that it describes very well the resonant ...
A. A. Starobinsky, A. A. Starobinsky, A. A. Starobinsky, A. A. Starobinsky, C. V. Vishveshwara, E. W. Leaver, K. D. Kokkotas, M. Abramowitz, M. Sasaki, Vitor Cardoso   +9 more
core   +1 more source

The Extreme GIC Occurrence During 11 years of Observations in the North‐West of Russia

Space Weather, Volume 24, Issue 5, May 2026.
Abstract For the first time, events with extreme magnitudes of geomagnetically induced currents (GICs) in the power lines during the quasi‐solar cycle (2012–2022) at auroral and subauroral latitudes are analyzed. GIC recordings from auroral Vykhodnoy (Murmansk region) and subauroral Kondopoga (Karelia) sub‐stations together with data from near‐by ...
V. B. Belakhovsky, V. A. Pilipenko, V. N. Selivanov, Ya. A. Sakharov, J. J. Zhang, V. V. Kolobov   +5 more
wiley   +1 more source

Super-Eddington Accretion onto Black Holes and Its Application to Fallback Accretion

The Astrophysical Journal
We study the problem of steady-state spherical accretion onto a black hole, in which the internal energy of the flow is governed by radiation and photon diffusion dominates the energy flux at large radii.
Tamar Faran, Eliot Quataert
doaj   +1 more source

A synthetic model of the gravitational wave background from evolving binary compact objects

, 2016
Modeling the stochastic gravitational wave background from various astrophysical sources is a key objective in view of upcoming observations with ground- and space-based gravitational wave observatories such as Advanced LIGO, VIRGO, eLISA and PTA.
Dvorkin, Irina, Silk, Joseph, Uzan, Jean-Philippe, Vangioni, Elisabeth   +3 more
core   +4 more sources

Validating a Non‐Conventional Method for Expansion of Coronal Mass Ejections (CMEs) and Investigating the Evolution of a CME Substructures Using Solar Orbiter and Wind Observations

Space Weather, Volume 24, Issue 5, May 2026.
Abstract We present a validation of our recently proposed non‐conventional method, Constant Acceleration Accounted Perspective (CAAP), for estimating the instantaneous expansion speed of coronal mass ejection (CMEs), even when only single‐point in situ observations are available. This validation is enabled by the radial alignment of Solar Orbiter (SolO)
Anjali Agarwal, Wageesh Mishra, Mathew J. Owens, Tanja Amerstorfer   +3 more
wiley   +1 more source

DeepOT: A Deep Learning Framework for Pixel‐Level Ground Surface Displacement Estimation From SAR Amplitude Imagery

Earth and Space Science, Volume 13, Issue 5, May 2026.
Abstract Monitoring ground surface displacement is critical for understanding geophysical processes and mitigating natural hazards, yet conventional Synthetic Aperture Radar (SAR) techniques are often limited by decorrelation, complex terrain, and heterogeneous motion.
Jinwoo Kim, Hying‐Sup Jung, Zhong Lu
wiley   +1 more source

Novel Polarimetric Analysis of Near-horizon Flaring Episodes in M87* in Millimeter Wavelength

The Astrophysical Journal
Recent multiwavelength observations of M87* revealed a high-energy γ -ray flare without a millimeter counterpart. We present a theoretical study of potential millimeter flares in M87*, using general relativistic magnetohydrodynamical simulations with ...
Razieh Emami, Matthew Liska, Koushik Chatterjee, Geoffrey C. Bower, Wystan Benbow, Douglas Finkbeiner, Maciek Wielgus, Lars Hernquist, Randall Smith, Grant Tremblay, Angelo Ricarte, James F. Steiner, Avery E. Broderick, Saurabh, Jordy Davelaar, Josh Grindlay, Mark Vogelsberger, Chi-Kwan Chan   +17 more
doaj   +1 more source

Observing Supermassive Black Holes across cosmic time: from phenomenology to physics

, 2015
In the last decade, a combination of high sensitivity, high spatial resolution observations and of coordinated multi-wavelength surveys has revolutionized our view of extra-galactic black hole (BH) astrophysics.
A. Akylas, A. Bongiorno, A. Cattaneo, A. Comastri, A. Lawrence, A. Lawrence, A. Lawrence, A. Lawrence, A. Marconi, A. Merloni, A. Merloni, A. Merloni, A. Merloni, A. Merloni, A. Merloni, A. Merloni, A. Sesana, A. Soltan, A.A. Galeev, A.C. Fabian, A.C. Fabian, A.T. Steffen, A.T. Steffen, B. Chen, B.J. Sams, B.R. McNamara, C. Done, C. Jin, C. Simpson, C.D. Dermer, C.D.P. Lagos, C.J. Willott, C.J. Willott, C.M. Urry, D. Burlon, D.A. Rafferty, E. Lusso, E. Lusso, E. Treister, E. Treister, E. Treister, E. Treister, E.S. Perlman, F. Fiore, F. Franca La, F. Haardt, F. Hamann, F. Shankar, F. Vito, F. Özel, G. Ghisellini, G. Hasinger, G. Hasinger, G. Matt, G. Risaliti, G. Risaliti, G. Setti, G.H. Rieke, G.L. Granato, G.T. Richards, H. Falcke, H. Hao, H. Netzer, H. Netzer, I. Delvecchio, I. Georgantopoulos, I. Hubeny, I. Pâris, I.G. Roseboom, I.M. George, J. Buchner, J. Fritz, J. Goodman, J. Kormendy, J.-M. Wang, J.D. Schnittman, J.E. McClintock, J.H. Mayo, J.J. Condon, J.S. Dunlop, J.V. Wall, K. Iwasawa, K. Iwasawa, K. Nandra, K. Ohsuga, K.E. Whitaker, K.R.W. Tristram, K.W. Cavagnolo, L. Bîrzan, L. Danese, L.C. Ho, M. Brightman, M. Brightman, M. Brightman, M. Brusa, M. Dijkstra, M. Elitzur, M. Elvis, M. Elvis, M. Elvis, M. Gilfanov, M. Gilfanov, M. Kishimoto, M. Kishimoto, M. Kishimoto, M. Kishimoto, M. Lacy, M. Massardi, M. Nenkova, M. Schmidt, M. Volonteri, M. Volonteri, M. Young, M.A. Worsley, M.J. Hardcastle, M.S. Longair, N.I. Shakura, P. Padovani, P. Ranalli, P. Tozzi, P.F. Hopkins, P.N. Best, P.W. Guilbert, Q. Yu, R. Antonucci, R. Barvainis, R. Giacconi, R. Gilli, R. Maiolino, R. Maiolino, R. Maiolino, R. Narayan, R.A. Sunyaev, R.A. Sunyaev, R.C. Hickox, R.D. Blandford, R.H. Becker, R.J. Assef, R.J. Assef, R.P. Fender, R.R.J. Antonucci, R.S. Nemmen, S. Bianchi, S. Heinz, S. Heinz, S. Heinz, S. Kaspi, S. Sazonov, S.M. Croom, S.W. Allen, S.W. Davis, T.A. Boroson, V. Smolčić, X. Dai, Y. Juarez, Y. Ueda, Y. Ueda, Y.-F. Jiang, Z. Shang   +158 more
core   +1 more source