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

Abstract

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.

9+1 pages including 4 figures; version published in JCAP

References in corpus (14)

• Shapiro delay measurement of a two solar mass neutron star
• A Massive Pulsar in a Compact Relativistic Binary
• The type Ia supernova SNLS-03D3bb from a super-Chandrasekhar-mass white dwarf star
• The Luminous and Carbon-Rich Supernova 2006gz: A Double Degenerate Merger?
• New mass limit for white dwarfs: super-Chandrasekhar type Ia supernova as a new standard candle
• Conformally flat polytropes for anisotropic matter
• Strongly magnetized cold electron degenerate gas: Mass-radius relation of the magnetized white dwarf
• Maximum mass of stable magnetized highly super-Chandrasekhar white dwarfs: stable solutions with varying magnetic fields
• A possible evolutionary scenario of highly magnetized super-Chandrasekhar white dwarfs: progenitors of peculiar type Ia supernovae
• Mass of highly magnetized white dwarfs exceeding the Chandrasekhar limit: An analytical view
• Violation of Chandrasekhar Mass Limit: The Exciting Potential of Strongly Magnetized White Dwarfs
• Mass-radius relation of strongly magnetized white dwarfs: nearly independent of Landau quantization
• Revised density of magnetized nuclear matter at the neutron drip line
• Super-Chandrasekhar White Dwarfs with Magnetic-dependent Equation of State

Cited by in corpus (10)

• Current challenges in the physics of white dwarf stars
• Massive white dwarfs in $f(R,L_m)$ gravity
• Anisotropic magnetized white dwarfs: Unifying under- and over-luminous peculiar and standard type Ia supernovae
• Suppression of luminosity and mass-radius relation of highly magnetized white dwarfs
• Strange magnetars admixed with fermionic dark matter
• Continuous gravitational wave detection to understand the generation mechanism of fast radio bursts
• Formation, Possible Detection and Consequences of Highly Magnetized Compact Stars
• Relativistic Landau quantization in non-uniform magnetic field and its applications to white dwarfs and quantum information
• Electrically non-neutral ground states of stars
• Timescales for Detecting Magnetized White Dwarfs in Gravitational Wave Astronomy