Study of Nature of Corona in Narrow Line Seyfert 1 Galaxies

Understand

We study X-ray spectra of four Narrow Line Seyfert 1 galaxies (NLS1s), Mrk 110, SWIFT J2127.4+5654, IGR J16185-5928, and WKK 4438, using Suzaku and NuSTAR data.

• The spectra of the four sources are reproduced with a model consisting of a cutoff power law component, a reflection component, and a soft excess component.
• The photon indices of all the sources are found to be ~ 2.
• The cutoff energies are constrained to be ~ 40 keV for Mrk 110, SWIFT J2127.4+5654, and WKK 4438, whereas a lower limit of 155 keV is obtained for IGR J16185-5928.