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Measuring the masses of magnetic white dwarfs: A NuSTAR legacy survey

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dc.contributor.author Shaw A.W.
dc.contributor.author Heinke C.O.
dc.contributor.author Mukai K.
dc.contributor.author Tomsick J.A.
dc.contributor.author Doroshenko V.
dc.contributor.author Suleimanov V.F.
dc.contributor.author Buisson D.J.K.
dc.contributor.author Gandhi P.
dc.contributor.author Grefenstette B.W.
dc.contributor.author Hare J.
dc.contributor.author Jiang J.
dc.contributor.author Ludlam R.M.
dc.contributor.author Rana V.
dc.contributor.author Sivakoff G.R.
dc.date.accessioned 2021-02-24T20:33:47Z
dc.date.available 2021-02-24T20:33:47Z
dc.date.issued 2020
dc.identifier.issn 0035-8711
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/160907
dc.description.abstract © 2020 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society. The hard X-ray spectrum of magnetic cataclysmic variables can be modelled to provide a measurement of white dwarf mass. This method is complementary to radial velocity measurements, which depend on the (typically rather uncertain) binary inclination. Here, we present results from a Legacy Survey of 19 magnetic cataclysmic variables with NuSTAR. We fit accretion column models to their 20-78 keV spectra and derive the white dwarf masses, finding a weighted average MWD=0.77± 0.02$ M⊙, with a standard deviation σ = 0.10 M⊙, when we include the masses derived from previous NuSTAR observations of seven additional magnetic cataclysmic variables. We find that the mass distribution of accreting magnetic white dwarfs is consistent with that of white dwarfs in non-magnetic cataclysmic variables. Both peak at a higher mass than the distributions of isolated white dwarfs and post-common-envelope binaries. We speculate as to why this might be the case, proposing that consequential angular momentum losses may play a role in accreting magnetic white dwarfs and/or that our knowledge of how the white dwarf mass changes over accretion-nova cycles may also be incomplete.
dc.relation.ispartofseries Monthly Notices of the Royal Astronomical Society
dc.subject accretion, accretion discs
dc.subject novae, cataclysmic variables
dc.subject white dwarfs
dc.title Measuring the masses of magnetic white dwarfs: A NuSTAR legacy survey
dc.type Review
dc.relation.ispartofseries-issue 3
dc.relation.ispartofseries-volume 498
dc.collection Публикации сотрудников КФУ
dc.relation.startpage 3457
dc.source.id SCOPUS00358711-2020-498-3-SID85096822455


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  • Публикации сотрудников КФУ Scopus [24551]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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