Results 31 to 40 of about 138,565 (336)
Massive black holes in dwarf spheroidal galaxy haloes? [PDF]
Monthly Notices of the Royal Astronomical Society, 2005 15 pages, 13 figures; accepted for publication in MNRAS.
Jin, Shoko +2 more
openaire +2 more sources
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
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 +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. +3 more
doaj +1 more source
Gas heating from spinning and non-spinning evaporating primordial black holes
Physics Letters B, 2021 Primordial black holes (PBHs) from the early Universe constitute a viable dark matter (DM) candidate and can span many orders of magnitude in mass. Light PBHs with masses around 1015 g contribute to DM and will efficiently evaporate through Hawking ...
Ranjan Laha +2 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 +25 more
core +1 more source
Low-mass Galaxy Interactions Trigger Black Hole Activity
The Astrophysical Journal LettersThe 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 +5 more
doaj +1 more source
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. +2 more
core +1 more source
Merging White Dwarf/Black Hole Binaries and Gamma-Ray Bursts [PDF]
, 1998 The merger of compact binaries, especially black holes and neutron stars, is frequently invoked to explain gamma-ray bursts (GRB's). In this paper, we present three dimensional hydrodynamical simulations of the relatively neglected mergers of white ...
Blandford R. D. +8 more
core +4 more sources
Mesoporous Carbon Thin Films with Large Mesopores as Model Material for Electrochemical Applications
Advanced Functional Materials, EarlyView.Mesoporous carbon thin films possessing 70 nm mesopores are prepared on titanium substrates by soft templating of resol resins with a self‐synthesized poly(ethylene oxide)‐block‐poly(hexyl acrylate) block copolymer. A strategy to avoid corrosion of the metal substrate is presented, and the films are extensively characterized in terms of morphology ...
Lysander Q. Wagner +9 more
wiley +1 more source