Limits on the quiescent radio emission from the black hole binaries GRO J1655-40 and XTE J1550-564

D. E. Calvelo, R. P. Fender, D. M. Russell, E. Gallo, S. Corbel, A. K. Tzioumis, M. E. Bell, F. Lewis, T. J. Maccarone

Research output: Contribution to journalArticle

Abstract

We present the results of radio observations of the black hole binaries GRO J1655-40 and XTE J1550-564 in quiescence, with the upgraded Australia Telescope Compact Array. Neither system was detected. Radio flux density upper limits (3σ) of 26 μJy (at 5.5 GHz), 47 μJy (at 9 GHz) for GRO J1655-40 and 1.4 mJy (at 1.75 GHz), 27 μJy (at 5.5 GHz), 47 μJy (at 9 GHz) for XTE J1550-564 were measured. In conjunction with quasi-simultaneous Chandra X-ray observations (in the case of GRO J1655-40) and Faulkes Telescope optical observations (XTE J1550-564) we find that these systems provide the first evidence of relatively 'radio-quiet' black hole binaries at low luminosities, indicating that the scatter observed in the hard state X-ray-radio correlation at higher luminosities may also extend towards quiescent levels.

Original languageEnglish (US)
Pages (from-to)839-845
Number of pages7
JournalMonthly Notices of the Royal Astronomical Society
Volume409
Issue number2
DOIs
StatePublished - Dec 1 2010

Keywords

  • Binaries: close
  • Black hole physics
  • ISM: jets and outflows
  • Stars: individual: GRO J1655-40
  • Stars: individual: XTE J1550-564
  • X-rays: binaries

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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    Calvelo, D. E., Fender, R. P., Russell, D. M., Gallo, E., Corbel, S., Tzioumis, A. K., Bell, M. E., Lewis, F., & Maccarone, T. J. (2010). Limits on the quiescent radio emission from the black hole binaries GRO J1655-40 and XTE J1550-564. Monthly Notices of the Royal Astronomical Society, 409(2), 839-845. https://doi.org/10.1111/j.1365-2966.2010.17348.x