Probing the dynamics of disc jet-connection in XRBs with the internal shock model.
Abstract
The emission of steady compact jets observed in the hard spectral state of X-ray binaries (XRBs) and in AGN could to be powered by internal shocks caused by fluctuations of the outflow velocity. The properties of these fluctuations determine almost entirely the radiative output of the jet. It is reasonable to assume that the fluctuations of jet velocity originate in the accretion flow. Indeed, accretion flows in XRBs are strongly variable and play a key role in the formation of outflows. Their variability can be traced by their X-ray light curves. The response of the synchrotron jet can then be observed with radio and IR measurements. Under the assumption that the power spectrum of the jet fluctuations is identical to that of the observed X-ray light curve, one can predict the both jet SEDs and its multi-wavelength variability. I will review the results recently obtained from modelling of multi-frequency observations of several XRBs including not only black holes but also an accreting neutron star. The issue of the contribution of the jet to the soft-gamma-ray emission will also be addressed.
- Publication:
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43rd COSPAR Scientific Assembly. Held 28 January - 4 February
- Pub Date:
- January 2021
- Bibcode:
- 2021cosp...43E1578M