MeerKAT radio detection of the Galactic black hole candidate Swift J1842.5-1124 during its 2020 outburst

MeerKAT radio detection of the Galactic black hole candidate Swift J1842.5-1124 during its 2020 outburst
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MeerKAT 在 2020 年爆发期间对银河系黑洞候​​选者 Swift J1842.5-1124 进行无线电探测

DOI:
10.1093/mnras/stab3463
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发表时间:
2021-12
期刊:
\mnras
影响因子:
--
通讯作者:
Sivakoff G.~R.
Sivakoff G.~R.
中科院分区:
其他
文献类型:
--
作者:
Zhang X.;Yu W.;Motta S.~E.;Fender R.;Woudt P.;Miller-Jones J.~C.~A.;Sivakoff G.~R.

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Swift J1842.5−1124是一个短暂的银河系黑洞X射线双星候选者,它在2020年5月经历了一次新的爆发。我们在ThunderKAT大型调查计划下进行了多历元MeerKAT射电观测,并在爆发期间与准同步Swift/XRT X射线观测相协调,持续了近一个月。我们能够对这个黑洞双星进行有史以来第一次无线电探测,当源处于硬态时,其最高通量密度为229 ± 31 Jy,而在新的X射线爆发期间出现后立即出现的软态无线电波段中没有探测到。因此,它的射电和X射线性质与在其他黑洞X射线双星中建立的盘喷耦合图像是一致的。我们把源的准同时的X射线和无线电测量的无线电/X射线光度相关平面上,两个准同时的无线电/X射线测量分离11 d,其中跨度在X射线光度的dex 2。如果源在爆发期间沿着射电/X射线相关平面中的黑洞轨迹,它将位于超过1.5kpc的距离。
Swift J1842.5−1124 is a transient Galactic black hole X-ray binary candidate, which underwent a new outburst in 2020 May. We performed multi-epoch MeerKAT radio observations under the ThunderKAT large survey programme, coordinated with quasi-simultaneous Swift/XRT X-ray observations during the outburst, which lasted nearly a month. We were able to make the first-ever radio detection of this black hole binary with the highest flux density of 229 ± 31Jy when the source was in the hard state, after non-detection in the radio band in the soft state which occurred immediately after its emergence during the new X-ray outburst. Therefore, its radio and X-ray properties are consistent with the disc-jet coupling picture established in other black hole X-ray binaries. We place the source’s quasi-simultaneous X-ray and radio measurements on the radio/X-ray luminosity correlation plane; two quasi-simultaneous radio/X-ray measurements separated by 11 d were obtained, which span ∼2 dex in the X-ray luminosity. If the source follows the black hole track in the radio/X-ray correlation plane during the outburst, it would lie at a distance beyond ∼5 kpc.
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DOI: 10.1093/mnrasl/slab049
发表时间: 2021-05
期刊: --
影响因子: --
作者:
F. Carotenuto;S. Corbel;E. Tremou;T. Russell;A. Tzioumis;R. Fender;P. Woudt;S. Motta;J. Miller-Jone
通讯作者: F. Carotenuto;S. Corbel;E. Tremou;T. Russell;A. Tzioumis;R. Fender;P. Woudt;S. Motta;J. Miller-Jone