Strongly magnetized electron degenerate gas: Highly super-Chandrasekhar\n white dwarfs

2013/02/23 by Upasana Das, Das, Upasana, Banibrata Mukhopadhyay +1
Physics and Astronomy · #FOS: Physical sciences #Gamma-ray bursts and supernovae #General Relativity and Quantum Cosmology (gr-qc) #Pulsars and Gravitational Waves Research #Solar and Space Plasma Dynamics #Solar and Stellar Astrophysics (astro-ph.SR)

paper · pdf · doi:10.48550/arxiv.1302.5763

openalex publication_date 2013/02/23 · openalex created_date 2022/10/01 · openalex updated_date 2026/07/28

Abstract

We consider a relativistic, degenerate, electron gas under the influence of a\nstrong magnetic field, which describes magnetized white dwarfs. Landau\nquantization changes the density of states available to the electrons, thus\nmodifying the underlying equation of state. We obtain the mass-radius relations\nfor such white dwarfs and show that it is possible to have magnetized white\ndwarfs with a mass significantly greater than the Chandrasekhar limit in the\nrange 2.3 - 2.6 M_sun. Recent observations of peculiar type Ia supernovae - SN\n2006gz, SN 2007if, SN 2009dc, SN 2003fg - seem to suggest\nsuper-Chandrasekhar-mass white dwarfs with masses up to 2.4 - 2.8 M_sun, as\ntheir most likely progenitors and interestingly our results lie within the\nobservational limits.\n

Related

• Highly super-Chandrasekhar white dwarfs in an extensive GRMHD framework
• Super-Chandrasekhar White Dwarfs with Magnetic-dependent Equation of State
• Highly magnetized white dwarfs: implications and current status
• Significantly super-Chandrasekhar limiting mass white dwarfs as\n progenitors for peculiar over-luminous type Ia supernovae
• Very Magnetized White Dwarfs with Axisymmetric Magnetic Field and the\n Importance of the Electron Capture and Pycnonuclear Fusion Reactions for\n their Stability