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arXiv · 1910.00349

The 2018 outburst of BHXB H1743-322 as seen with MeerKAT

D. R. A. Williams·S. E. Motta·R. Fender·J. Bright·I. Heywood·E. Tremou·P. Woudt·D. A. H. Buckley·S. Corbel·M. Coriat·T. Joseph·L. Rhodes·G. R. Sivakoff·A. J. van der Horst
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Abstract

In recent years, the black hole candidate X-ray binary system H1743-322 has undergone outbursts and it has been observed with X-ray and radio telescopes. We present 1.3 GHz MeerKAT radio data from the ThunderKAT Large Survey Project on radio transients for the 2018 outburst of H1743-322. We obtain seven detections from a weekly monitoring programme and use publicly available Swift X-ray Telescope and MAXI data to investigate the radio/X-ray correlation of H1743-322 for this outburst. We compare the 2018 outburst with those reported in the literature for this system and find that the X-ray outburst reported is similar to previously reported `hard-only' outbursts. As in previous outbursts, H1743-322 follows the `radio-quiet' correlation in the radio/X-ray plane for black hole X-ray binaries, and the radio spectral index throughout the outburst is consistent with the `radio-quiet' population.

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D. R. A. Williams, S. E. Motta, R. Fender, J. Bright, I. Heywood, E. Tremou, P. Woudt, D. A. H. Buckley, S. Corbel, M. Coriat, T. Joseph, L. Rhodes, G. R. Sivakoff, A. J. van der Horst. 2019-10-01. The 2018 outburst of BHXB H1743-322 as seen with MeerKAT. https://doi.org/10.1093/mnrasl%2Fslz152

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