Results 31 to 40 of about 21,739 (292)
The Formation of Intermediate-mass Black Holes in Galactic Nuclei
The Astrophysical Journal Letters, 2022 Abstract Most stellar evolution models predict that black holes (BHs) should not exist above approximately 50–70 M ⊙, the lower limit of the pair-instability mass gap. However, recent LIGO/Virgo detections indicate the existence of BHs with masses at and above this threshold.
Sanaea C. Rose +3 more
openaire +2 more sources
An escaping outflow in a galaxy with an intermediate-mass black hole
Monthly Notices of the Royal Astronomical Society, 2023 ABSTRACT While in massive galaxies active galactic nucleus (AGN) feedback plays an important role, the role of AGN feedback is still under debate in dwarf galaxies. With well spatially resolved data obtained from the Multi-Unit Spectroscopic Explorer, we identify a spatially extended ($\rm \sim 3\,\, kpc$) and fast ($V_{80} \sim 471\,\, \
Zhiyuan Zheng +7 more
openaire +2 more sources
Tidal capture of stars by intermediate-mass black holes [PDF]
Monthly Notices of the Royal Astronomical Society, 2006 Recent X-ray observations and theoretical modelling have made it plausible that some ultraluminous X-ray sources (ULX) are powered by intermediate-mass black holes (IMBHs). N-body simulations have also shown that runaway merging of stars in dense star clusters is a way to form IMBHs.
Baumgardt, H. +3 more
openaire +5 more sources
Intermediate Mass Black Holes: Their Motion and Associated Energetics
Advances in High Energy Physics, 2014 There is a lot of current astrophysical evidence and interest in intermediate mass black holes (IMBH), ranging from a few hundred to several thousand solar masses.
C. Sivaram, Kenath Arun
doaj +1 more source
The formation of intermediate mass black holes [PDF]
Symposium - International Astronomical Union, 2003 We study the growth rate of stars in dense star clusters by stellar collisions. Our analytic calculations are in good agreement with direct N-body simulations with up to 65536 stars performed on the GRAPE family of computers. We find that star clusters with a half mass relaxation time ≲ 20 Myr are dominated by stellar collisions.
openaire +2 more sources
The Hunt for Intermediate-mass Black Holes in the JWST Era [PDF]
The Astrophysical Journal, 2018 AbstractIntermediate-mass black holes (IMBHs), with masses between 100–105M⊙, fill the gap between stellar mass black holes and the supermassive black holes that reside in galaxy centers. While IMBHs are crucial to our understanding of black hole seed formation, black holes of less than ≈104M⊙have so far eluded detection by traditional searches ...
Jenna M. Cann +6 more
openaire +2 more sources
Partial Tidal Disruptions of Main-sequence Stars by Intermediate-mass Black Holes
The Astrophysical Journal, 2023 We study close encounters of a 1 M _⊙ middle-age main-sequence star (modeled using MESA) with massive black holes through hydrodynamic simulations, and explore in particular the dependence of the outcomes on the black hole mass.
Fulya Kıroğlu +5 more
doaj +1 more source
Primordial intermediate mass black holes as dark matter [PDF]
International Journal of Modern Physics A, 2020 Among particle theory candidates for the dark matter constituents. Axions and WIMPs are the most popular. In this paper, we discuss these then focus on our preferred astrophysical candidate, the Primordial Intermediate Mass Black Holes in the acronym DM[Formula: see text]=[Formula: see text]PIMBHs.
openaire +2 more sources
Astronomy & AstrophysicsThe mass range of observed black holes extends from stellar-mass to supermassive scales, yet the existence of objects in the intermediate-mass range of 102–105 M⊙ remains unconfirmed.
Mkrtchyan A., Horns D.
doaj +1 more source
Entropy of the Universe and Hierarchical Dark Matter
Entropy, 2022 We discuss the relationship between dark matter and the entropy of the universe, with the premise that dark matter exists in the form of primordial black holes (PBHs) in a hierarchy of mass tiers. The lightest tier includes all PBHs with masses below one
Paul H. Frampton
doaj +1 more source