Journal Article

Constraints on black hole accretion in V Puppis

Thomas J. Maccarone, Robert P. Fender, Christian Knigge and A. K. Tzioumis

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 393, issue 3, pages 1070-1072
Published in print March 2009 | ISSN: 0035-8711
Published online February 2009 | e-ISSN: 1365-2966 | DOI:
Constraints on black hole accretion in V Puppis

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In light of the recent suggestion that the nearby eclipsing binary star system V Puppis has a dark companion on a long orbit, we present the results of radio and X-ray observations of it. We find an upper limit on its radio flux of about 300 μJy and a detection of it in the X-rays with a luminosity of about 3 × 1031 erg s−1, a value much lower than what had been observed in some of the low angular resolution surveys of the past. These data are in good agreement with the idea that the X-ray emission from V Puppis comes from mass transfer between the two B stars in the system, but can still accommodate the idea that the X-ray emission comes from the black hole accreting stellar wind from one or both of the B stars.

Keywords: stars: individual: V Puppis; X-rays: stars

Journal Article.  1787 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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