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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
Disc-jet coupling in the 2009 outburst of the black hole candidate H1743-322
Monthly Notices of the Royal Astronomical Society, Volume 421, No. 1, Year 2012
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Description
We present an intensive radio and X-ray monitoring campaign on the 2009 outburst of the Galactic black hole candidate X-ray binary H1743-322. With the high angular resolution of the Very Long Baseline Array, we resolve the jet ejection event and measure the proper motions of the jet ejecta relative to the position of the compact core jets detected at the beginning of the outburst. This allows us to accurately couple the moment when the jet ejection event occurred with X-ray spectral and timing signatures. We find that X-ray timing signatures are the best diagnostic of the jet ejection event in this outburst, which occurred as the X-ray variability began to decrease and the Type C quasi-periodic oscillations disappeared from the X-ray power density spectrum. However, this sequence of events does not appear to be replicated in all black hole X-ray binary outbursts, even within an individual source. In our observations of H1743-322, the ejection was contemporaneous with a quenching of the radio emission, prior to the start of the major radio flare. This contradicts previous assumptions that the onset of the radio flare marks the moment of ejection. The jet speed appears to vary between outbursts, with a possible positive correlation with outburst luminosity. The compact core radio jet reactivated on transition to the hard intermediate state at the end of the outburst, and not when the source reached the low hard spectral state. Comparison with the known near-infrared behaviour of the compact jets suggests a gradual evolution of the compact jet power over a few days near the beginning and end of an outburst. © 2012 The Authors Monthly Notices of the Royal Astronomical Society © 2012 RAS.
Authors & Co-Authors
Miller-Jones, James C.A.
Australia, Perth
International Centre for Radio Astronomy Research
United States, Charlottesville
National Radio Astronomy Observatory
Sivakoff, Gregory R.
Canada, Edmonton
University of Alberta
United States, Charlottesville
University of Virginia
Altamirano, Diego
Netherlands, Amsterdam
Universiteit Van Amsterdam
Coriat, Mickaël
France, Gif-sur-yvette
Astrophysique, Instrumentation et Modélisation de Paris-saclay
United Kingdom, Southampton
University of Southampton
Corbel, Stéphane
France, Gif-sur-yvette
Astrophysique, Instrumentation et Modélisation de Paris-saclay
Dhawan, Vivek
United States, Socorro
National Radio Astronomy Observatory Socorro
Krimm, Hans A.
United States, Washington, D.c.
National Aeronautics and Space Administration
United States, Columbia
Universities Space Research Association
Remillard, Ronald A.
United States, Cambridge
Mit Kavli Institute for Astrophysics and Space Research
Rupen, Michael P.
United States, Socorro
National Radio Astronomy Observatory Socorro
Russell, David M.
Netherlands, Amsterdam
Universiteit Van Amsterdam
Fender, Robert P.
Netherlands, Amsterdam
Universiteit Van Amsterdam
United Kingdom, Southampton
University of Southampton
Heinz, Sebastian
United States, Madison
University of Wisconsin-madison
K̈ording, Elmar G.
Netherlands, Nijmegen
Radboud Universiteit
Netherlands, Dwingeloo
Netherlands Foundation for Research in Astronomy
Maitra, Dipankar
United States, Ann Arbor
University of Michigan, Ann Arbor
Markoff, Sera B.
Netherlands, Amsterdam
Universiteit Van Amsterdam
Migliari, Simone
Spain, Barcelona
Instituto de Estudios Espaciales de Cataluña
Sarazin, Craig L.
United States, Charlottesville
University of Virginia
Tudose, Valeriu
Netherlands, Dwingeloo
Netherlands Foundation for Research in Astronomy
Statistics
Citations: 125
Authors: 18
Affiliations: 16
Identifiers
Doi:
10.1111/j.1365-2966.2011.20326.x
ISSN:
13652966
Research Areas
Environmental