3 papers
astro-ph.HE2026
Estimation of black hole spins in low-mass AGNs and comparison with other types of AGNs
M. Yu. Piotrovich, S. D. Buliga, T. M. Natsvlishvili
We estimated the spins of a sample of 58 low-mass AGNs. Analysis of the obtained spins showed that they decrease with increasing SMBH mass, leading us to hypothesize that mergers a…
astro-ph.HE2025
Spins of SMBHs in distant low luminosity AGNs
M. Yu. Piotrovich, S. D. Buliga, T. M. Natsvlishvili
We estimated radiative efficiency, spin and SMBH mass values for sample of 33 distant low luminosity AGNs. The distribution of the estimated spin values (majority of objects have a…
astro-ph.HE2025
Estimating the spins of supermassive black holes in distant ultraluminous quasars
M. Yu. Piotrovich, S. D. Buliga, T. M. Natsvlishvili
We estimated spin, inclination angle and corresponding SMBH mass values for sample of extremely distant (6 < z < 7.5) ultraluminous quasars. The estimated spin values are on averag…