Results 71 to 80 of about 140,146 (178)

Effects of Dissipation Physics on High-frequency Quasiperiodic Oscillations in Black Hole X-Ray Binaries

The Astrophysical Journal
We numerically investigate the effects of black hole spin and local dissipation profiles on high-frequency quasiperiodic oscillation (HFQPO) observed in black hole X-ray binaries (BHXBs).
Theodore Dezen, Sergio Gomez, Kathryn Anawalt   +2 more
doaj   +1 more source

Exploring a primordial solution for early black holes detected with JWST [PDF]

Astronomy & Astrophysics
With its rest-frame optical sensitivity, the James Webb Space Telescope (JWST) has unearthed black holes as massive as $10^ at redshifts of $z 8.5-10.6$.
P. Dayal
semanticscholar   +1 more source

Bidirectional Energy Transfer via Simultaneous Wave‐Particle Resonances in Inhomogeneous Space Plasmas

AGU Advances, Volume 7, Issue 4, August 2026.
Abstract Wave‐particle resonance is a key mechanism for energy transfer in collisionless plasmas with important implications for wave excitation and particle acceleration. Cyclotron resonance occurs when a particle's gyromotion synchronizes with the wave fields, with their interactions usually describable by quasilinear diffusion or nonlinear trapping.
Jing‐Huan Li, Xu‐Zhi Zhou, Shan Wang, Zhi‐Yang Liu, Yuri V. Khotyaintsev, Daniel B. Graham, Qiu‐Gang Zong, Chao Yue, Anton V. Artemyev, Yoshiharu Omura, Si Liu, Li Li, Jie Ren, Zi‐Kang Xie, Yun Yan   +14 more
wiley   +1 more source

Charged regular black holes in quantum gravity: from thermodynamic stability to observational phenomena

The European Physical Journal C
We investigate the thermodynamic, astrophysical, and observational properties of charged nonsingular black holes within the framework of quantum gravity and nonlinear electrodynamics.
E. Sucu, I. Sakallı
semanticscholar   +1 more source

Atmospheric Constituent Data Assimilation in NASA's Goddard Earth Observing System

Earth and Space Science, Volume 13, Issue 8, August 2026.
Abstract Many of today's most significant and urgent scientific questions, including those about the impact of human activity on air quality and radiative forcing, require the synthesis of observations of atmospheric constituents and scientific theory.
B. Weir, K. Wargan, C. A. Keller, K. E. Knowland, P. A. Wales, V. Shah, B. M. Karpowicz, N. Balashov, L. E. Ott, R. Todling, S. E. Cohn, S. Pawson   +11 more
wiley   +1 more source

New Estimates of the Spin and Accretion Rate of the Black Hole M87*

The Astrophysical Journal Letters
In this Letter, we use the imaging results of M87* from the Event Horizon Telescope (EHT) to calculate the rotational velocity of the inner edge of the accretion disk and find a value of ∼0.14 c .
Michael Drew, Joshua S. Stanway, Brett A. Patterson, Timothy J. Walton, Derek Ward-Thompson   +4 more
doaj   +1 more source

A study of black holes in F(R)-ModMax gravity: Gravitational lensing and constraints from EHT observations

Physics Letters B
The study of astrophysical phenomena like black hole shadows is an effective approach to properly understand the modified gravity and explore its validity.
Khadije Jafarzade, Zeynab Bazyar, Mubasher Jamil   +2 more
doaj   +1 more source

Evolution of Tectonically Accreted Topmost Oceanic Lithospheric Mantle Based on Seismic Tomography Constraints at the Ultraslow‐Spreading Southwest Indian Ridge

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 8, August 2026.
Abstract Oceanic lithosphere formed at the global mid‐ocean ridge system makes up >60% of Earth's solid surface. Its uppermost ∼6 km are accreted either magmatically, where mafic melt is available, or tectonically, where this melt is absent. The magmatically accreted lithosphere is known to evolve with age, as demonstrated by its velocity increase ...
A. Corbalán, M. R. Nedimović
wiley   +1 more source

A Simple Model for Extracting Astrophysics from Black Hole Images

The Astrophysical Journal
The Event Horizon Telescope (EHT) is providing unprecedented high-resolution images of supermassive black holes. These images are fundamentally related to properties of the luminous accretion disks, since black holes themselves produce no light.
Alexandra G. Guerrero, Daniel E. Holz
doaj   +1 more source

Image features of spinning regular black holes based on a locality principle

European Physical Journal C: Particles and Fields, 2021
To understand the true nature of black holes, fundamental theoretical developments should be linked all the way to observational features of black holes in their natural astrophysical environments. Here, we take several steps to establish such a link. We
Astrid Eichhorn, Aaron Held
doaj   +1 more source