Radio flaring and dual radio loud/quiet behaviour in the new candidate black hole X-ray binary MAXI J1631-472

Abstract

We present the results of a weekly monitoring of the new black hole candidate X-ray binary MAXI J1631-472 carried out with the MeerKAT radio interferometer, the Neil Gehrels Swift Observatory, and the Monitor of All-sky X-ray Image (MAXI) instrument, during its 2018-2019 outburst. The source exhibits a number of X-ray states, in particular both high- and low-luminosity hard states bracketed by extended soft states. Radio flaring is observed shortly after a transition from hard/intermediate states to the soft state. This is broadly in agreement with existing empirical models, but its extended duration hints at multiple unresolved flares and/or jet-ISM interactions. In the hard state radio:X-ray plane, the source is revealed to be 'radio quiet' at high luminosities, but to rejoin the `standard' track at lower luminosities, an increasingly commonly-observed pattern of behaviour.

Accepted for publication in MNRAS

References in corpus (9)

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• Evolution of MAXI J1631-479 during the January 2019 outburst observed by INTEGRAL/IBIS

Cited by in corpus (10)

• The NICER "Reverberation Machine": A Systematic Study of Time Lags in Black Hole X-Ray Binaries
• A quasar-based supermassive black hole binary population model: implications for the gravitational-wave background
• The INTEGRAL view on Black Hole X-ray Binaries
• The hybrid radio/X-ray correlation of the black hole transient MAXI J1348-630
• Spectral and timing evolution of MAXI J1631-479 during the 2018-19 outburst with NICER
• Search for and Identification of Young Compact Galactic Supernova Remnants Using THOR
• Long term radio monitoring of the neutron star X-ray binary Swift J1858.6-0814
• Revisiting the galactic X-ray binary MAXI J1631-479: Implications for high inclination and a massive black hole
• MeerKAT radio detection of the Galactic black hole candidate Swift J1842.5-1124 during its 2020 outburst
• The black hole X-ray binary MAXI J1348$-$630 in quiescence