Results 81 to 90 of about 916 (166)

1D stellar mergers: entropy sorting and PyMMAMS

Stellar multiple systems are the norm, not the exception, with many systems undergoing interaction phases during their lifetimes. A subset of these interactions can lead to stellar mergers, where the two components of a stellar binary system come close enough to coalesce into a single star.
Heller, Max, Schneider, Fabian R. N., Henneco, Jan, Bronner, Vincent A., Lau, Mike Y. M.   +4 more
openaire   +2 more sources

GW231123: Likely a Product of Successive Mergers from ∼10 Stellar-mass Black Holes

The Astrophysical Journal
GW231123 is an exceptionally massive binary black hole (BBH) merger with unusually high component spins. Such extreme properties challenge conventional stellar evolution models, predicting a black hole (BH) mass gap due to pair-instability supernovae. We
Yin-Jie Li, Shao-Peng Tang, Ling-Qin Xue, Yi-Zhong Fan   +3 more
doaj   +1 more source

The Time Evolution of Fast Flavor Crossings in Postmerger Disks around a Black Hole Remnant

The Astrophysical Journal
We postprocess a three-dimensional, general relativistic, full transport neutrino radiation magnetohydrodynamics simulation of the black-hole-accretion disk-wind system thought to be a potential outcome of the GW170817 merger to investigate the presence ...
Payel Mukhopadhyay, Jonah Miller, Gail C. McLaughlin   +2 more
doaj   +1 more source

The Structure and Evolution of a High-mass Stellar Merger in the Hertzsprung Gap

The Astrophysical Journal
Post-main-sequence binary mergers are a common evolutionary pathway for massive stars, but the effects of merging on the long-term structure and evolution of the resulting star are a matter of active debate.
Rachel A. Patton, Marc H. Pinsonneault, Todd A. Thompson   +2 more
doaj   +1 more source

Hydrodynamics of Stellar Mergers and the Formation of Blue Stragglers

, 1995
The hydrodynamics of stellar collisions and mergers is discussed in the context of blue straggler formation. Emphasis is placed on the very important question of hydrodynamic mixing during the merger process. Recent results of three-dimensional hydrodynamic calculations suggest that the merger remnants produced by stellar collisions are typically {\em ...
openaire   +2 more sources

Heavy Seeds and the First Black Holes: Insights from the BRAHMA Simulations

The Astrophysical Journal
From the luminous quasars at z ∼ 6 to the recent z ∼ 9–11 active galactic nuclei (AGN) revealed by JWST, observations of the earliest black hole (BH) populations can provide unique constraints on BH evolution.
Aklant K. Bhowmick, Laura Blecha, Paul Torrey, Luke Zoltan Kelley, Priyamvada Natarajan, Rachel S. Somerville, Rainer Weinberger, Alex M. Garcia, Lars Hernquist, Tiziana Di Matteo, Jonathan Kho, Mark Vogelsberger   +11 more
doaj   +1 more source

Gravitational-wave constraints on the pair-instability mass gap and nuclear burning in massive stars. [PDF]

Nat Astron
Antonini F, Romero-Shaw IM, Callister T, Dosopoulou F, Chattopadhyay D, Ginat YB, Gieles M, Mapelli M.   +7 more
europepmc   +1 more source

Origins and lifetimes of secular and tidal bars in simulated disc galaxies. [PDF]

Mon Not R Astron Soc
Frosst M, Obreschkow D, Ludlow A, Fraser-McKelvie A.   +3 more
europepmc   +1 more source

Discovery of a star sensitive to the spin of Sagittarius A. [PDF]

Nature
Abd El Dayem K, Abuter R, Aimar N, Amaro-Seoane P, Berdeu A, Berger JP, Bourdarot G, Brandner W, Burkert A, Caldéron D, Correia C, Cuadra J, Davies R, Defrère D, Delit L, Drescher A, Eisenhauer F, Esteras Otal L, Fabricius M, Feuchtgruber H, Flesch S, Förster Schreiber NM, Foschi A, Fournier Q, Garcia P, Garcia Lopez R, Generozov A, Genzel R, Gillessen S, Gonté F, Haubois X, Hönig SF, Houllé M, Joharle S, Kaufer A, Kammerer J, Kervella P, Kolb J, Kreidberg L, Labadie L, Lacour S, Lai O, Laugier R, Le Bouquin JB, Leftley J, Li R, Lopez B, Lutz D, Mang F, Mérand A, Millour F, Montargès M, Morujão N, Nowacki H, Nowak M, Oberti S, Osorno J, Ott T, Paumard T, Paladini C, Pappert S, Perets HB, Perraut K, Perrin G, Petrov R, Petrucci PO, Piran T, Pourré N, Rabien S, Ribeiro DC, Robbe-Dubois S, Sadun Bordoni M, Sanchez-Bermudez J, Santos D, Sari R, Sauter J, Scheithauer S, Scigliuto J, Shangguan J, Shimizu TT, Soulez F, Stadler J, Straubmeier C, Sturm E, Subroweit M, Sykes C, Tacconi LJ, Thévenet P, Urso I, Vincent F, Woillez J, Zins G, GRAVITY+ Collaboration.   +92 more
europepmc   +1 more source

Spin effects in superfluidity, neutron matter, and neutron stars. [PDF]

Sci Adv
Sedrakian A, Rau PB.
europepmc   +1 more source