Shocks in the relativistic transonic accretion

Our article “Shocks in the relativistic transonic accretion with low angular momentum”, by Petra Sukova, Szymon Charzyński, and Agnieszka Janiuk, has been accepted by the Monthly Notices of RAS, and now is available on-line.

In the extensive numerical study, which is the firs of this kind (former works were based on analytical approaches), we study different directional distributions of angular momentum of falling matter and varying values of key parameters such as spin of central black hole, energy and angular momentum of matter. In some of the scenarios the shock front is formed. We identify ranges of parameters for which the shock after formation moves towards or outwards the central black hole or the long lasting oscillating shock is observed.

The results are scalable with mass of central black hole and can be compared to the quasi-periodic oscillations of selected microquasars (such as GRS 1915+105, XTE J1550-564 or IGR J17091-3624), as well as to the supermassive black holes in the centres of weakly active galaxies, such as Sgr A*.

Figure below shows the distribution of the Mach number, as well as the density and specific angular momentum for one of the simulations.

Link to the article is here.


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