GRMHD formulation of highly super-Chandrasekhar magnetized white dwarfs: stable configurations of non-spherical white dwarfs

Journal Article · Fri May 01 00:00:00 EDT 2015 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2015/05/016· OSTI ID:22525844

Das, Upasana; Mukhopadhyay, Banibrata ^[1]

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1. Department of Physics, Indian Institute of Science, Bangalore 560012 (India)

The topic of magnetized super-Chandrasekhar white dwarfs is in the limelight, particularly in the last few years, since our proposal of their existence. By full-scale general relativistic magnetohydrodynamic (GRMHD) numerical analysis, we confirm in this work the existence of stable, highly magnetized, significantly super-Chandrasekhar white dwarfs with mass more than 3 solar mass. While a poloidal field geometry renders the white dwarfs oblate, a toroidal field makes them prolate retaining an overall quasi-spherical shape, as speculated in our earlier work. These white dwarfs are expected to serve as the progenitors of over-luminous type Ia supernovae.

• OSTI ID: 22525844
• Journal Information: Journal of Cosmology and Astroparticle Physics, Vol. 2015, Issue 05; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
GENERAL RELATIVITY THEORY
MAGNETIC FIELD CONFIGURATIONS
MAGNETOHYDRODYNAMICS
MASS
NUMERICAL ANALYSIS
RELATIVISTIC RANGE
SPHERICAL CONFIGURATION
SUPERNOVAE
WHITE DWARF STARS