Abstract Details
| Name: Prasanta Bera Affiliation: Research Scholar Conference ID: ASI2015_640 Title : Mass–radius relation of strongly magnetized white dwarfs: nearly independent of Landau quantization Authors and Co-Authors : Prof. Dipankar Bhattacharya, IUCAA, PUNE Abstract Type : Oral Abstract Category : Stars, The Milky Way Galaxy and its neighbours Abstract : Super-Chandrasekhar mass white dwarfs are believed to be the progenitors of over-luminous type-Ia supernovae. Modification of equation of state in presence of strong magnetic field has been considered to be a probable explanation of single degenerate system. We study the strongly magnetized white dwarf configurations in a self consistent manner. We compute static equilibria of white dwarf stars containing strong poloidal and toroidal magnetic field, and present the modification of white dwarf mass–radius relation caused by the magnetic field. We find that a maximum white dwarf mass of about 1.9M_Sun may be supported if the interior field is as strong as approximately 10^10 T. This mass is over 30 per cent larger than the traditional Chandrasekhar Limit. The equation of state of electron degenerate matter can be strongly modified due to Landau quantization at such high magnetic fields.We find, however, that this does not significantly affect the structure of the white dwarf. |