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Radio and X-ray detections of GX 339–4 in quiescence using MeerKAT and Swift

Tremou, E. and Corbel, S. and Fender, R. P. and Woudt, P. A. and Miller-Jones, J. C. A. and Motta, S. E. and Heywood, I. and Armstrong, R. P. and Groot, P. and Horesh, A. and van der Horst, A. J. and Koerding, E. and Mooley, K. P. and Rowlinson, A. and Wijers, R. A. M. J. (2020) Radio and X-ray detections of GX 339–4 in quiescence using MeerKAT and Swift. Monthly Notices of the Royal Astronomical Society: Letters, 493 (1). L132-L137. ISSN 1745-3925.

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The radio–X-ray correlation that characterizes accreting black holes at all mass scales – from stellar mass black holes in binary systems to supermassive black holes powering active galactic nuclei – is one of the most important pieces of observational evidence supporting the existence of a connection between the accretion process and the generation of collimated outflows – or jets – in accreting systems. Although recent studies suggest that the correlation extends down to low luminosities, only a handful of stellar mass black holes have been clearly detected, and in general only upper limits (especially at radio wavelengths) can be obtained during quiescence. We recently obtained detections of the black hole X-ray binary (XRB) GX 339–4 in quiescence using the Meer Karoo Array Telescope (MeerKAT) radio telescope and Swift X-ray Telescope instrument on board the Neil Gehrels Swift Observatory, probing the lower end of the radio–X-ray correlation. We present the properties of accretion and of the connected generation of jets in the poorly studied low-accretion rate regime for this canonical black hole XRB system.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Woudt, P. A.0000-0002-6896-1655
Miller-Jones, J. C. A.0000-0003-3124-2814
Motta, S. E.0000-0002-6154-5843
Groot, P.0000-0002-4488-726X
Horesh, A.0000-0002-5936-1156
van der Horst, A. J.0000-0001-9149-6707
Mooley, K. P.0000-0002-2557-5180
Rowlinson, A.0000-0002-1195-7022
Additional Information:© 2020 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society. This article is published and distributed under the terms of the Oxford University Press, Standard Journals Publication Model ( Accepted 2020 February 3. Received 2020 January 17; in original form 2019 December 5. Published: 06 February 2020. ET and SC acknowledge financial support from the UnivEarthS Labex program of Sorbonne Paris Cité (ANR-10-LABX-0023 and ANR-11-IDEX-0005-02). JCAM-J is the recipient of an Australian Research Council Future Fellowship (FT140101082), funded by the Australian Government. PG acknowledges support from the NRF SARChI program under grant number 111692. PAW acknowledges support from UCT and the NRF. We acknowledge the use of data obtained from the High Energy Astrophysics Science Archive Research Center (HEASARC), provided by NASA’s Goddard Space Flight Center. We thank the staff at the South African Radio Astronomy Observatory (SARAO) for scheduling these observations. The MeerKAT telescope is operated by the South African Radio Astronomy Observatory, which is a facility of the National Research Foundation, an agency of the Department of Science and Innovation. This work was carried out in part using facilities and data processing pipelines developed at the Inter-University Institute for Data Intensive Astronomy (IDIA). IDIA is a partnership of the Universities of Cape Town of the Western Cape and of Pretoria. We acknowledge the use of the Nançay Data Center, hosted by the Nançay Radio Observatory (Observatoire de Paris-PSL, CNRS, Université d’ Orléans), and also supported by Region Centre-Val de Loire.
Funding AgencyGrant Number
Agence Nationale pour la Recherche (ANR)ANR-10-LABX-0023
Agence Nationale pour la Recherche (ANR)ANR-11-IDEX-0005-02
Australian Research CouncilFT140101082
National Research Foundation (South Africa)111692
University of Cape TownUNSPECIFIED
Region Centre-Val de LoireUNSPECIFIED
Subject Keywords:radio continuum: transients – X-rays: binaries
Issue or Number:1
Record Number:CaltechAUTHORS:20200501-085941285
Persistent URL:
Official Citation:E Tremou, S Corbel, R P Fender, P A Woudt, J C A Miller-Jones, S E Motta, I Heywood, R P Armstrong, P Groot, A Horesh, A J van der Horst, E Koerding, K P Mooley, A Rowlinson, R A M J Wijers, Radio and X-ray detections of GX 339–4 in quiescence using MeerKAT and Swift, Monthly Notices of the Royal Astronomical Society: Letters, Volume 493, Issue 1, March 2020, Pages L132–L137,
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:102958
Deposited By: Tony Diaz
Deposited On:01 May 2020 16:16
Last Modified:01 May 2020 16:16

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