Results 41 to 50 of about 102,046 (339)

Extremely Relativistic Tidal Disruption Events

open access: yesThe Astrophysical Journal Letters, 2023
Extreme tidal disruption events (eTDEs), which occur when a star passes very close to a supermassive black hole, may provide a way to observe a long-sought general relativistic effect: orbits that wind several times around a black hole and then leave ...
Taeho Ryu, Julian Krolik, Tsvi Piran
doaj   +1 more source

The Dynamical Evolution of Stellar Black Holes in Globular Clusters

open access: yes, 2014
Our current understanding of the stellar initial mass function and massive star evolution suggests that young globular clusters may have formed hundreds to thousands of stellar-mass black holes, the remnants of stars with initial masses from $\sim 20 ...
Morscher, Meagan   +4 more
core   +1 more source

Magnetic massive stars as progenitors of ‘heavy’ stellar-mass black holes [PDF]

open access: yes, 2016
The groundbreaking detection of gravitational waves produced by the inspiralling and coalescence of the black hole (BH) binary GW150914 confirms the existence of 'heavy' stellar-mass BHs with masses >25 M-circle dot.
V. Petit   +10 more
semanticscholar   +1 more source

On the Mass Distribution of Stellar-Mass Black Holes

open access: yesOpen Astronomy, 2014
The observational stellar-mass black hole mass distribution exhibits a maximum at about 8 M⊙. It can be explained via the details of the massive star evolution, supernova explosions, or consequent black hole evolution.
Malkov O. Yu.
doaj   +1 more source

A SEARCH FOR STELLAR-MASS BLACK HOLES VIA ASTROMETRIC MICROLENSING [PDF]

open access: yes, 2016
While dozens of stellar-mass black holes (BHs) have been discovered in binary systems, isolated BHs have eluded detection. Their presence can be inferred when they lens light from a background star. We attempt to detect the astrometric lensing signatures
Jessica R. Lu   +4 more
semanticscholar   +1 more source

WIMPs and stellar-mass primordial black holes are incompatible [PDF]

open access: yesPhysical Review D, 2019
We recently showed that postulated ultracompact minihalos with a steep density profile do not form in realistic simulations with enhanced initial perturbations.
J. Adamek   +3 more
semanticscholar   +1 more source

Gravitational Radiation from Intermediate-Mass Black Holes

open access: yes, 2002
Recent X-ray observations of galaxies with ROSAT, ASCA, and Chandra have revealed numerous bright off-center point sources which, if isotropic emitters, are likely to be intermediate-mass black holes, with hundreds to thousands of solar masses.
Benacquista M.   +14 more
core   +3 more sources

Non-Primordial Solar Mass Black Holes [PDF]

open access: yes, 2018
We propose a mechanism that can convert a sizeable fraction of neutron stars into black holes with mass $\sim 1M_\odot$, too light to be produced via standard stellar evolution.
Kouvaris, Chris   +2 more
core   +2 more sources

Repeated Mergers, Mass-gap Black Holes, and Formation of Intermediate-mass Black Holes in Dense Massive Star Clusters [PDF]

open access: yes, 2021
Current theoretical models predict a mass gap with a dearth of stellar black holes (BHs) between roughly 50 M ⊙ and 100 M ⊙, while above the range accessible through massive star evolution, intermediate-mass BHs (IMBHs) still remain elusive.
G. Fragione   +3 more
semanticscholar   +1 more source

The High Energy X-ray Probe (HEX-P): probing accretion onto stellar mass black holes

open access: yesFrontiers in Astronomy and Space Sciences
Accretion is a universal astrophysical process that plays a key role in cosmic history, from the epoch of reionization to galaxy and stellar formation and evolution. Accreting stellar-mass black holes in X-ray binaries are one of the best laboratories to
Riley M. T. Connors   +24 more
doaj   +1 more source

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