Mass accretion rate of the galactic black hole A0620-00 in its quiescent state

Abstract

Our recent radio observation using the Giant Meter Radio Telescope (GMRT) of the galactic black hole transient A0620-00 at 1.280GHz revealed a micro-flare of a few milli-Jansky. Assuming an equipartition of magnetic energy and the gravitational potential energy of accreting matter, it is possible to estimate the upper limit of the accretion rate. Assuming a black hole mass of $10M_{\odot }$ residing at the center, we find this to be at the most $\dot{M}=(8.5\pm 1.4)\times 10^{-11}{M}_{\odot }$ yr${}^{-1}$. This is consistent with earlier estimates of accretion rates based on optical and X-ray observations.

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References in corpus (2)

• The disc instability model of dwarf-novae and low-mass X-ray binary transients
• A Multi-Wavelength, Multi-Epoch Study of the Soft X-Ray Transient Prototype, V616 Mon (A0620-00)

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