Accreting White Dwarfs
M. Hernanz (1,3), J. Jose (2,3) ((1) Institut de Ciencies de l'Espai, (CSIC), (2) Departament de Fisica i Enginyeria Nuclear, EUETIB (UPC), (3), Institut d'Estudis Espacials de Catalunya (IEEC), Barcelona, Spain)
TL;DR
This paper investigates the behavior of accreting white dwarfs in close binary systems to better understand the conditions leading to type Ia supernovae explosions, focusing on accretion processes and stellar characteristics.
Contribution
It provides an analysis of how accretion influences white dwarf growth towards the Chandrasekhar limit and the potential for thermonuclear explosions.
Findings
Accretion affects white dwarf mass growth.
Chemical composition impacts explosion conditions.
Binary system parameters influence supernova likelihood.
Abstract
Thermonuclear (type Ia) supernovae are explosions in accreting white dwarfs, but the exact scenario leading to these explosions is still unclear. An important step to clarify this point is to understand the behaviour of accreting white dwarfs in close binary systems. The characteristics of the white dwarf (mass, chemical composition, luminosity), the accreted material (chemical composition) and those related with the properties of the binary system (mass accretion rate), are crucial for the further evolution towards the explosion. An analysis of the outcome of accretion and the implications for the growth of the white dwarf towards the Chandrasekhar mass and its thermonuclear explosion is presented.
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Taxonomy
TopicsGamma-ray bursts and supernovae · Astrophysical Phenomena and Observations · Pulsars and Gravitational Waves Research