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

doi:10.1111/j.1365-2966.2010.17348.x

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

Physics

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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 language	English (US)
Pages (from-to)	839-845
Number of pages	7
Journal	Monthly Notices of the Royal Astronomical Society
Volume	409
Issue number	2
DOIs	https://doi.org/10.1111/j.1365-2966.2010.17348.x
State	Published - Dec 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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10.1111/j.1365-2966.2010.17348.x

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

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.",

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

author = "Calvelo, {D. E.} and Fender, {R. P.} and Russell, {D. M.} and E. Gallo and S. Corbel and Tzioumis, {A. K.} and Bell, {M. E.} and F. Lewis and Maccarone, {T. J.}",

year = "2010",

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doi = "10.1111/j.1365-2966.2010.17348.x",

language = "English (US)",

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T1 - Limits on the quiescent radio emission from the black hole binaries GRO J1655-40 and XTE J1550-564

AU - Calvelo, D. E.

AU - Fender, R. P.

AU - Russell, D. M.

AU - Gallo, E.

AU - Corbel, S.

AU - Tzioumis, A. K.

AU - Bell, M. E.

AU - Lewis, F.

AU - Maccarone, T. J.

PY - 2010/12

Y1 - 2010/12

N2 - 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.

AB - 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.

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KW - Black hole physics

KW - ISM: jets and outflows

KW - Stars: individual: GRO J1655-40

KW - Stars: individual: XTE J1550-564

KW - X-rays: binaries

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

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Keywords

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