A Deep Radio Survey of Hard State and Quiescent Black Hole X-Ray Binaries
MetadataShow full item record
We have conducted a deep radio survey of a sample of black hole X-ray binaries in the hard and quiescent states to determine whether any systems were sufficiently bright for astrometric follow-up with high-sensitivity very long baseline interferometric arrays. The one hard-state system, Swift J1753.5–0127, was detected at a level of 0.5 mJy beam–1. All 11 quiescent systems were not detected. In the three cases with the highest predicted quiescent radio brightnesses (GRO J0422+32, XTE J1118+480, and GRO J1655–40), the new capabilities of the Expanded Very Large Array were used to reach noise levels as low as 2.6 µJy beam–1. None of the three sources were detected to 3s upper limits of 8.3, 7.8, and 14.2 µJy beam–1, respectively. These observations represent the most stringent constraints to date on quiescent radio emission from black hole X-ray binaries. The uncertainties in the source distances, quiescent X-ray luminosities at the times of the observations, and the power-law index of the empirical correlation between radio and X-ray luminosities make it impossible to determine whether these three sources are significantly less luminous in the radio band than expected. Thus it is not clear whether that correlation holds all the way down to quiescence for all black hole X-ray binaries.
Showing items related by title, author, creator and subject.
Miller-Jones, James; Strader, J.; Heinke, C.; Maccarone, T.; van den Berg, M.; Knigge, C.; Chomiuk, L.; Noyola, E.; Russell, T.; Seth, A.; Sivakoff, G. (2015)We report the detection of steady radio emission from the known X-ray source X9 in the globular cluster 47 Tuc. With a double-peaked C iv emission line in its ultraviolet spectrum providing a clear signature of accretion, ...
Corbel, S.; Miller-Jones, James; Fender, R.; Gallo, E.; Maccarone, T.; O'brien, T.; Paragi, Z.; Rupen, M.; Rushton, A.; Sabatini, S.; Sivakoff, G.; Strader, J.; Woudt, P. (2014)The universal link between the processes of accretion and ejection leads to the formation of jets and outflows around accreting compact objects. Incoherent synchrotron emission from these outflows can be observed from a ...
Gallo, E.; Miller-Jones, James; Russell, D.; Jonker, P.; Homan, J.; Plotkin, R.; Markoff, S.; Miller, B.; Corbel, S.; Fender, R. (2014)We report on deep, coordinated radio and X-ray observations of the black hole X-ray binary XTE J1118+480 in quiescence. The source was observed with the Karl G. Jansky Very Large Array for a total of 17.5 h at 5.3 GHz, ...