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ROSAT observations of A0538–66 during quiescence
Author(s) -
Campana S.
Publication year - 1998
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/asna.2123190147
Subject(s) - citation , rosat , physics , philosophy , computer science , astrophysics , world wide web , galaxy
We discuss serendipitous ROSAT observations of the Be transient A0538-66,which contains the fastest known accreting X-ray pulsar (69 ms). We show thatthis transient is detected several times during quiescence at a level of about10^34-35 erg/s. Considering this low luminosity it is more likely that X-raysare produced by matter falling onto the neutron star magnetosphere, rather thanonto the star surface. This could be the first example of an X-ray source inthe "propeller regime".
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