Results 41 to 50 of about 135,505 (333)

Constraints on relic magnetic black holes

Journal of High Energy Physics, 2022
We present current direct and astrophysical limits on the cosmological abundance of black holes with extremal magnetic charge. Such black holes do not Hawking radiate, allowing those normally too light to survive to the present to do so.
Melissa D. Diamond, David E. Kaplan
doaj   +1 more source

Tidal Stripping of a White Dwarf by an Intermediate-mass Black Hole

The Astrophysical Journal, 2023
Abstract During the inspiralling of a white dwarf (WD) into an intermediate-mass black hole (∼102−5 M ⊙), both gravitational waves (GWs) and electromagnetic (EM) radiation are emitted. Once the eccentric orbit’s pericenter radius approaches the tidal radius, the WD would be tidally stripped upon each ...
Jin-Hong 劲鸿 Chen 陈, Rong-Feng 荣锋 Shen 申, Shang-Fei 尚飞 Liu 刘   +2 more
openaire   +3 more sources

Radio Emission from an Ultraluminous X-Ray Source [PDF]

, 2003
The physical nature of ultraluminous x-ray sources is uncertain. Stellar mass black holes with beamed radiation and intermediate mass black holes with isotropic radiation are two plausible explanations.
Corbel, Stephane, Kaaret, Philip, Prestwich, Andrea H., Zezas, Andreas   +3 more
core   +3 more sources

Emission lines from tidally disrupted white dwarfs and other evolved stars

EPJ Web of Conferences, 2012
When a black hole tidally disrupts a star, accretion of the debris will produce a luminous flare and reveal the presence of a dormant black hole. The accretion flare can also photoionize a portion of the post-disruption debris.
Sigurdsson S., Eracleous M., Clausen D., Irwin J.A.   +3 more
doaj   +1 more source

Genome-Wide Identification and Gene Expression Analysis of the OTU DUB Family in Oryza sativa

Viruses, 2022
Ovarian tumor domain (OTU)-containing deubiquitinating enzymes (DUBs) are an essential DUB to maintain protein stability in plants and play important roles in plant growth development and stress response.
Qiannan Liu, Tingyun Yan, Xiaoxiang Tan, Zhongyan Wei, Yanjun Li, Zongtao Sun, Hehong Zhang, Jianping Chen   +7 more
doaj   +1 more source

Wandering Black Holes in Bright Disk Galaxy Halos

, 2010
We perform SPH+N-body cosmological simulations of massive disk galaxies, including a formalism for black hole seed formation and growth, and find that satellite galaxies containing supermassive black hole seeds are often stripped as they merge with the ...
Barth, Brooks, Brooks, Devecchi, Di Matteo, Fan, Filippenko, Fujita, Governato, Greene, Gross, Jonker, Kazantzidis, Krolik, Leitherer, Leroy, Madau, Mayer, Meylan, Schneider, Spergel, Stadel, Swartz, Ulvestad, Volonteri, Wiersema   +25 more
core   +1 more source

Cataclysmic Binaries Containing a Black-Dwarf Secondary [PDF]

International Astronomical Union Colloquium, 1983
ABSTRACTCataclysmic binaries with a black-dwarf secondary can in principle be distinguished from those containing a low-mass main-sequence secondary because of the differences of the corresponding eclipse light curves. However, due to the very low intrinsic luminosity of the systems containing a black dwarf, the probability of detection turns out to be
openaire   +2 more sources

Counting Black Holes: The Cosmic Stellar Remnant Population and Implications for LIGO

, 2017
We present an empirical approach for interpreting gravitational wave signals of binary black hole mergers under the assumption that the underlying black hole population is sourced by remnants of stellar evolution.
Bullock, James S., Elbert, Oliver D., Kaplinghat, Manoj   +2 more
core   +1 more source

Low-mass Galaxy Interactions Trigger Black Hole Activity

The Astrophysical Journal Letters
The existence of high- z overmassive supermassive black holes represents a major conundrum in our understanding of black hole evolution. In this Letter, we probe from the observational point of view how early Universe environmental conditions could have ...
Marko Mićić, Jimmy A. Irwin, Preethi Nair, Brenna N. Wells, Olivia J. Holmes, Jackson T. Eames   +5 more
doaj   +1 more source

Close evolutionary relationship between rice black-streaked dwarf virus and southern rice black-streaked dwarf virus based on analysis of their bicistronic RNAs

Virology Journal, 2019
Background Rice black-streaked dwarf virus (RBSDV) and Southern rice black-streaked dwarf virus (SRBSDV) seriously interfered in the production of rice and maize in China.
Zenghui Wang, Chengming Yu, Yuanhao Peng, Chengshi Ding, Qingliang Li, Deya Wang, Xuefeng Yuan   +6 more
doaj   +1 more source