Zobrazeno 1 - 10
of 76
pro vyhledávání: '"Roche lobe overflow"'
Autor:
Kaustav K. Das, Christoffer Fremling, Mansi M. Kasliwal, Steve Schulze, Jesper Sollerman, Viraj Karambelkar, Sam Rose, Shreya Anand, Igor Andreoni, Marie Aubert, Sean J. Brennan, S. Bradley Cenko, Michael W. Coughlin, B. O’Connor, Kishalay De, Jim Fuller, Matthew Graham, Erica Hammerstein, Annastasia Haynie, K-Ryan Hinds, Io Kleiser, S. R. Kulkarni, Zeren Lin, Chang Liu, Ashish A. Mahabal, Christopher Martin, Adam A. Miller, James D. Neill, Daniel A. Perley, Priscila J. Pessi, Nikolaus Z. Prusinski, Josiah Purdum, Vikram Ravi, Ben Rusholme, Samantha Wu, Avery Wold, Lin Yan
Publikováno v:
The Astrophysical Journal Letters, Vol 969, Iss 1, p L11 (2024)
We present SN 2023zaw—a subluminous ( M _r = −16.7 mag) and rapidly evolving supernova ( t _1/2, _r = 4.9 days), with the lowest nickel mass (≈0.002 M _⊙ ) measured among all stripped-envelope supernovae discovered to date. The photospheric s
Externí odkaz:
https://doaj.org/article/a43cea876ff34b81badd2315d9e065ff
Publikováno v:
The Astrophysical Journal Letters, Vol 966, Iss 1, p L7 (2024)
Accreting main-sequence stars expand significantly when the mass accretion timescale is much shorter than their thermal timescales. This occurs during mass transfer from an evolved giant star onto a main-sequence companion in a binary system and is a
Externí odkaz:
https://doaj.org/article/d57ad713863b4b6aa23a89518c0204df
Publikováno v:
The Astrophysical Journal, Vol 977, Iss 1, p 80 (2024)
Tidal disruption events (TDE) occur when a star ventures too close to a massive black hole. In a partial TDE (pTDE), the star only grazes the tidal radius, causing the outer envelope of the star to be stripped away while the stellar core survives. Pr
Externí odkaz:
https://doaj.org/article/b59427a5eccb4b0fa018e7b2ecc9e497
Autor:
Itai Linial, Eliot Quataert
Publikováno v:
The Astrophysical Journal, Vol 974, Iss 1, p 67 (2024)
We consider Roche lobe overflow (RLO) from a low-mass star on a nearly circular orbit, onto a supermassive black hole (SMBH). If mass transfer is unstable, its rate accelerates in a runaway process, resulting in highly super-Eddington mass accretion
Externí odkaz:
https://doaj.org/article/669b908f6ee54807b0ec82bff4a6d1d6
Publikováno v:
The Astrophysical Journal, Vol 973, Iss 2, p 168 (2024)
We use an analytic framework to calculate the evolution of binary orbits under a physically motivated model that accounts for angular momentum loss associated with winds from an accretion disk around the compact-objected accretor. Our prescription co
Externí odkaz:
https://doaj.org/article/e90891067c8e46b484eb91f4985a8770
Publikováno v:
The Astrophysical Journal, Vol 971, Iss 1, p 64 (2024)
We present a method to obtain rapid mass-loss rates in binary systems, specifically at the onset of mass transfer (MT) episodes. The method unifies atmospheric (underflow) and L _1 stream (overflow) mass rates in a single continuous procedure. The me
Externí odkaz:
https://doaj.org/article/1bd1290f6c60456ea2ac826e1cff6c6e
Autor:
M. Renzo, E. Zapartas, S. Justham, K. Breivik, M. Lau, R. Farmer, M. Cantiello, B. D. Metzger
Publikováno v:
The Astrophysical Journal Letters, Vol 942, Iss 2, p L32 (2023)
Common envelope (CE) evolution is an outstanding open problem in stellar evolution, critical to the formation of compact binaries including gravitational-wave sources. In the “classical” isolated binary evolution scenario for double compact objec
Externí odkaz:
https://doaj.org/article/f9d900ac0c124fec990cd3c405a2ceec
Publikováno v:
The Astrophysical Journal, Vol 956, Iss 1, p 41 (2023)
Despite the 30 yr history of ultraluminous X-ray sources (ULXs) studies, issues such as the majority of their physical natures (i.e., neutron stars, stellar-mass black holes, or intermediate black holes) as well as the accretion mechanisms are still
Externí odkaz:
https://doaj.org/article/928f827896804c168100e254f6e84c7a
Publikováno v:
The Astrophysical Journal, Vol 955, Iss 2, p 133 (2023)
The formation histories of compact binary mergers, especially stellar-mass binary black hole mergers, have recently come under increased scrutiny and revision. We revisit the question of the dominant formation channel and efficiency of forming binary
Externí odkaz:
https://doaj.org/article/405d838cc1e24df8a5682f3b73584aee
Autor:
Itai Linial, Re’em Sari
Publikováno v:
The Astrophysical Journal, Vol 945, Iss 2, p 86 (2023)
We discuss the formation and evolution of systems composed of a low-mass ( M _⋆ ≲ 4 M _⊙ ) main-sequence star orbiting a 10 ^5 –10 ^7 M _⊙ supermassive black hole with an orbital period of order ∼hours and a mild eccentricity ( e ≈ 0.1
Externí odkaz:
https://doaj.org/article/7dca0290f33f4ef49daf098278da22b0