Zobrazeno 1 - 10
of 192
pro vyhledávání: '"Kashi, Amit"'
Autor:
Mukhija, Bhawna, Kashi, Amit
Giant eruptions (GE) in Luminous blue variables (LBVs) are years to decades-long episodes of enhanced mass loss from the outer layers of the star during which the star undergoes major changes in its physical and observed properties. We use the \texts
Externí odkaz:
http://arxiv.org/abs/2408.01718
We conduct numerical simulations of multiple nova eruptions in detached, widely separated symbiotic systems that include an asymptotic giant branch (AGB) companion to investigate the impact of white dwarf (WD) mass and binary separation on the evolut
Externí odkaz:
http://arxiv.org/abs/2311.08334
Autor:
Kashi, Amit
We simulate the hydrodynamics of the wind flow in the B[e] supergiant binary system GG~Carinae and obtain the mass accretion rate onto the secondary and the observed lightcurve. We find an inhomogeneous Bondi-Hoyle-Lyttleton accretion into a curved a
Externí odkaz:
http://arxiv.org/abs/2306.05992
We carry out a numerical experiment of ejecting winds in a massive colliding wind binary system, and quantifying the accretion onto the secondary star under different primary mass loss rates. We set a binary system comprising a Luminous Blue Variable
Externí odkaz:
http://arxiv.org/abs/2207.01990
We propose a triple-star scenario where the merger of two pre-main sequence low mass stars, <0.5Mo, ejects a dusty equatorial outflow that obscures and temporarily causes the disappearance of a massive star, >8Mo. The merger of the low-mass inner bin
Externí odkaz:
http://arxiv.org/abs/2202.08629
Autor:
Hillman, Yael, Kashi, Amit
We use a combined binary evolution code including dynamical effects to study nova eruptions in a symbiotic system. Following the evolution, over $\sim10^5$ years, of multiple consecutive nova eruptions on the surface of a $1.25M_\odot$ white dwarf (W
Externí odkaz:
http://arxiv.org/abs/2010.05869
Publikováno v:
The Astrophysical Journal, 914:47 (14pp), 2021 June 10
The massive binary system Eta Carinae is characterized by intense colliding winds that form shocks and emit X-rays. The system is highly eccentric ($e\simeq0.9$), resulting in modulated X-ray emission during its 5.54 year orbit. The X-ray flux increa
Externí odkaz:
http://arxiv.org/abs/2010.03877
Autor:
Akashi, Muhammad, Kashi, Amit
The accretion model for the nineteenth century Great Eruption (GE) of $\eta$ Carinae suggests that mass outflowing from the primary was accreted onto the secondary, and the gravitational energy of that mass accounts for the increase in luminosity and
Externí odkaz:
http://arxiv.org/abs/2004.03993
Autor:
Kashi, Amit
We run hydrodynamic simulations which follow the colliding winds structure of the massive binary system HD 166734 along its binary orbit, and show that close to periastron passage the secondary wind is suppressed and the secondary accretes mass from
Externí odkaz:
http://arxiv.org/abs/2001.08007
The low mass star ASASSN-13db experienced an EXor outburst in 2013, which identified it as a Young Stellar Object (YSO). Then, from 2014 to 2017 it had another outburst, longer and more luminous than the earlier. We analyze the observations of the se
Externí odkaz:
http://arxiv.org/abs/1912.07305