Population synthesis of ultraluminous X-ray sources with magnetised neutron stars

Understand

A model of population of ultraluminous X-ray sources with magnetised neutron stars (NULX) in a spiral galaxy with the star formation history similar to that in the thin disc of Milky Way is computed using a hybrid approach.

• First, applying analytical approximations (code BSE) we construct the ensemble of close binaries (CBS) which can be potential precursors of NULX.
• Next, evolution with accretion onto magnetised neutron stars (NS) is computed by the evolutionary code MESA.
• Accretion rate onto NS and X-ray luminosity are calculated for the models of sub- and supercritical discs and for the discs with advection.