Conveners
X-Ray and Gamma-Ray Binaries
- Anton Dmytriiev (North-West University)
Black Hole X-ray binaries (BHXRBs) represent a unique class of astrophysical systems where a stellar-mass black hole accretes matter from a companion star via accretion disks. The accretion disk emits X-ray and UV because of the radiative losses. The transfer of matter can occur through continuous donor supply or episodic capturing of material from stellar winds, leading to sudden enhancements...
Gamma-ray binaries are a subclass of high-mass binary stellar binary systems consisting of a compact object (neutron star/ black hole) and an O- or B-type stellar companion. They emit across the entire electromagnetic spectrum, with a characteristic energy spectrum that peaks in the gamma-ray energy range. Currently, only ten such systems have been discovered.
1GLJ1018.6-5856 and LMC P3...
Some accreting white dwarf (WD) systems show dwarf nova (DN) outbursts. These are characterized by an outburst amplitude of a few magnitudes and a duration of days to weeks in optical bands, as explained in the thermal instability model. We report the detailed optical and X-ray observations of the 2021 outburst in MASTER OT J030227.28+191754.5 (hereafter J0302). The X-ray spectrum at outburst...
This project explores the complex emission patterns and instabilities in the post-shock accretion columns (PSACs) of magnetic cataclysmic variables (mCVs). Utilizing the PLUTO code, the study integrates bremsstrahlung and cyclotron radiation mechanisms to simulate these phenomena under various initial conditions, such as white dwarf mass and magnetic field strengths. The findings reveal...
