Long-term variability of the FRII microquasar GRS 1758-258

Details Long-term variability of the FRII microquasar GRS 1758-258 Long-term variability of the FRII microquasar GRS 1758-258

Oct 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008atnf.prop.1767s&link_type=abstract

ATNF proposal C1963, Semester: October, 2008

Astronomy and Astrophysics

Astrophysics

Galactic, Atca

Scientific paper

The microquasar GRS 1758-258 has a variable radio core (associated with a bright X-ray source) and persistent, extended lobes at a distance of a few pc. We propose to observe it at 6 cm. We will measure or constrain flux variability in the core and lobes compared with previous 6-cm observations from 1992 and 1997; we will search for position and morphology changes in the lobes; we will compare the radio and X-ray state of the accreting black hole. Furthermore, we will model the lobe formation process, size and age, using our simulations of jet propagation in an inhomogeneous medium, with jet/cloud collisions. By estimating the jet power injected into the lobes, we will constrain the distribution of outgoing accretion power between radiative and kinetic energy (an important unsolved problem in black hole astrophysics at all scales).

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