Results 51 to 60 of about 4,909 (237)

Astrophysical black holes embedded in organized magnetic fields

, 2023
Large-scale magnetic fields pervade the cosmic environment where the astrophysical black holes are often embedded and influenced by mutual interaction.
Karas, Vladimír
core  

On the Fate of Little Red Dots

The Astrophysical Journal
We study the stability and possible fates of little red dots (LRDs) under the stellar-only interpretation of their observational features. This is performed by a combination of analyzing the relevant timescales in their stellar dynamics and also the ...
Andrés Escala, Lucas Zimmermann, Sebastián Valdebenito, Marcelo C. Vergara, Dominik R. G. Schleicher, Matías Liempi   +5 more
doaj   +1 more source

Evaluating maturity of organic matter in hydrated C1 and CM‐like clasts and a dehydrated clast within a polymict eucrite and a howardite

Meteoritics &Planetary Science, EarlyView.
Abstract Volatile‐rich xenolithic clasts in different types of brecciated meteorites represent unique pristine solar system material. This study investigates the maturity and thermal history of organic matter using Raman spectroscopy and aqueous alteration effects using infrared spectroscopy in the matrix of 15 volatile‐rich clasts (C1 and CM‐like ...
Swarna Prava Das, Alessandro Maturilli, Aurélie Van den Neucker, Markus Patzek, Dipak Kumar Panda, Gopal K. Pradhan, Guneshwar Thangjam, Surya Snata Rout   +7 more
wiley   +1 more source

GROWTH OF MASSIVE BLACK HOLES AT THEIR LATE STAGE

, 2010
It is believed that the growth of local massive black holes was dominated by accretion during quasar phases, while a fraction of the local black hole mass was accumulated through accreting gases at very low rates. We derive the black hole mass density as
Xu, Ya-Di, Cao, Xinwu, Xinwu Cao, Ya-Di Xu   +3 more
core   +1 more source

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

Mercury's Eccentric Orbit as a Driver of Significant “Seasonal” Change in Upstream Solar Wind Forcing

Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.
Abstract Mercury experiences the most intense and variable solar wind (SW) conditions in the solar system due to its close, eccentric orbit about the Sun. In addition to variation driven by coronal source and solar cycle, the SW arriving at Mercury varies periodically as the planet's heliocentric distance changes by over 50% per orbit.
Ryan M. Dewey, Caitriona Mary Jackman, Mathias Rojo, Lina Z. Hadid, Beatriz Sánchez‐Cano, Charles F. Bowers, Jim M. Raines, Susan T. Lepri, Stefano Livi, Jesse T. Coburn, Sae Aizawa, Yeimy J. Rivera, Weijie Sun, Jiutong Zhao, James A. Slavin, Daniel Heyner, Daragh M. Hollman, Alexander D. Shane   +17 more
wiley   +1 more source

The Role of Ultra‐Thin Buffer Layers for Achieving Ultra‐Low Dark Currents in Single‐Component Organic Photodetectors

Advanced Functional Materials, Volume 36, Issue 48, 15 June 2026.
Here, SubNc single‐component organic photodiodes (SC‐OPDs) are investigated, which achieve highly competitive performance metrics, including high EQE, ultra‐low JD, and high specific detectivity (D*). This study emphasizes the critical role of an organic buffer layer in studying the interface energetics and effects to achieve state‐of‐the‐art ...
Anncharlott Kusber, Ying Sun, Jakob Wolansky, Louis Conrad Winkler, Anna‐Lena Hofmann, Fred Kretschmer, Hrisheekesh Thachoth Chandran, Tianyi Zhang, Mike Hambsch, Stefan C. B. Mannsfeld, Karl Leo, Ji‐Seon Kim, Johannes Benduhn   +12 more
wiley   +1 more source

Astrophysical Black Holes: Overview [PDF]

Progress of Theoretical Physics Supplement, 2004
Recent progress in understanding the nature of astrophysical black holes is briefly reviewed. Special attentions are paid on the comparison of various classes of astrophysical black holes and the non-standard type models of accretion flow onto black holes, including near-critical accretion flow (slim-disk) model and magnetohydrodynamical (MHD) flow ...
openaire   +1 more source

The Black Hole Spin Controversy [PDF]

, 2012
Astrophysical black holes are the simplest possible objects. They are completely described by only two parameters in general relativity, their mass and the specific angular momentum, spin.
KOLEHMAINEN, MARI,JOHANNA, Kolehmainen, Mari Johanna   +1 more
core  

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