1999/06/30 by In-Saeng Suh, In‐Saeng Suh, Grant J. Mathews +1
Physics and Astronomy · #Astro and Planetary Science #Astrophysics #Degenerate energy levels #Magnetic field #Physics #Pulsars and Gravitational Waves Research #Quantum mechanics #RADIUS #Stars #Stellar, planetary, and galactic studies #White dwarf #astro-ph
paper · pdf · doi:10.1086/308403
7 pages, 7 figures and 1 table, To appear in ApJ
arxiv created 1999/11/06 · openalex publication_date 2000/02/20 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Recently, several white dwarfs with very strong surface magnetic fields have been observed. In this paper we explore the possibility that such stars could have sufficiently strong internal fields to alter their structure. We obtain a revised white dwarf mass-radius relation in the presence of strong internal magnetic fields. We first derive the equation of state for a fully degenerate ideal electron gas in a magnetic field using an Euler-MacLaurin expansion. We use this to obtain the mass-radius relation for magnetic 4 He, 12 C, and 56 Fe white dwarfs of uniform composition.