Disk-Jet quenching of the Galactic Black Hole Swift J1753.5-0127

TL;DR

This study presents a decade of radio and X-ray observations of the black hole candidate Swift J1753.5-0127, revealing insights into jet quenching and accretion states, with implications for understanding black hole accretion physics.

Contribution

It provides the first stringent limit on radio-jet quenching in a soft state and explores the jet-accretion connection in this black hole system.

Findings

Radio-quiet compared to similar XRBs in hard state

Power-law relationship with ζ=0.96±0.06 close to radiatively inefficient accretion

Radio flux in soft state <21 μJy, indicating significant jet quenching

Abstract

We report on radio and X-ray monitoring observations of the BHC Swift J1753.5-0127 taken over a ~10 year period. Presented are daily radio observations at 15 GHz with the AMI-LA and X-ray data from Swift XRT and BAT. Also presented is a deep 2hr JVLA observation taken in an unusually low-luminosity soft-state (with a low disk temperature). We show that although the source has remained relatively radio-quiet compared to XRBs with a similar X-ray luminosity in the hard-state, the power-law relationship scales as $\zeta=0.96\pm0.06$ i.e. slightly closer to what has been considered for radiatively inefficient accretion disks. We also place the most stringent limit to date on the radio-jet quenching in an XRB soft-state, showing the connection of the jet quenching to the X-ray power-law component; the radio flux in the soft-state was found to be $<21~\mu$Jy, which is a quenching factor of $\gtrsim25$