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AR Sco as a possible seed of highly magnetized white dwarf

Mukhopadhyay, Banibrata and Rao, A. R. and Bhatia, Tanayveer Singh (2017) AR Sco as a possible seed of highly magnetized white dwarf. In: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 472 (3). pp. 3564-3569.

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Official URL: http://doi.org/10.1093/mnras/stx2119


We explore the possibility that the recently discovered white dwarf pulsar AR Sco acquired its high spin and magnetic field due to repeated episodes of accretion and spin-down. An accreting white dwarf can lead to a larger mass and consequently a smaller radius thus causing an enhanced rotation period and a magnetic field. This spinning magnetic white dwarf temporarily can inhibit accretion, spin down and eventually, the accretion can start again due to the shrinking of the binary period by gravitational radiation. A repetition of the above cycle can eventually lead to a high magnetic field white dwarf, recently postulated to be the reason for overluminous type Ia supernovae. We also point out that these high magnetic field spinning white dwarfs are attractive sites for gravitational radiation.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the OXFORD UNIV PRESS, GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 03 Nov 2017 10:41
Last Modified: 03 Nov 2017 10:41
URI: http://eprints.iisc.ac.in/id/eprint/58140

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