Constraints on black hole accretion in v Puppis

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

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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 × 10 31 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.

Original languageEnglish
Pages (from-to)1070-1072
Number of pages3
JournalMonthly Notices of the Royal Astronomical Society
Issue number3
StatePublished - Mar 2009


  • Stars: individual: V Puppis
  • X-rays: stars


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