Kavli Affiliate: Claudio Ricci
| First 5 Authors: Indrani Pal, Anju A., H. Sreehari, Gitika Rameshan, C. S. Stalin
| Summary:
We carried out a uniform and systematic analysis of a sample of 112 nearby
bright Seyfert 1 type AGN, the observations of which were carried out by the
{it Nuclear Spectroscopic Telescope Array (NuSTAR)} between August 2013 and
May 2022. The main goal of this analysis is to investigate the nature of the
X-ray corona in Seyfert 1 galaxies. From the physical model that fits the {it
NuSTAR} spectra, we could constrain the high energy cut-off ($rm{E_{cut}}$)
for 73 sources in our sample. For those 73 sources, we fitted the
Comptonization model to estimate the temperature ($rm{kT_{e}}$) of their
corona. $rm{kT_{e}}$ could be constrained in 42 sources. We investigated for
possible correlations between various properties of the corona obtained from
physical model fits to the observed spectra and between various coronal
parameters and physical properties of the sources such as Eddington ratio and
black hole mass. We found (a) a strong correlation between $rm{E_{cut}}$ and
the photon index and (b) a significant negative correlation between
$rm{kT_{e}}$ and the optical depth.
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