3 papers
astro-ph.HE2025
Linear Polarization in a Black Hole, 4U~1957+115 and its X-ray Spectral Analysis
Lev Titarchuk, Elena Seifina, Paolo Soffiitta +1
We present a new spectro-polarimetric method for estimation of the inclination of X-ray binaries using the linear polarization (LP) value in black hole (BH) sources, based on the e…
astro-ph.HE2025
X-ray linear polarization prediction in Black-Hole binaries and Active Galactic Nuclei and its measurements by IXPE
Lev Titarchuk, Paolo Soffitta, Elena Seifina +3
We present a theoretical framework for the formation of X-ray linear polarization in black hole (BH) source. The X-ray linear polarization originates from up-scatterings of initial…
astro-ph.GA2024
Changing Look AGN: An X-ray Look
Lev Titarchuk, Elena Seifina, Yegor Mishin
To date, a number of changing-look (CL) active galactic nuclei (AGNs) are known. We studied, in detail what happens to the X-ray spectrum during the CL events using the example of…