Soft excess in AGN with relativistic X‐ray reflection-Reference-Cited by-同舟云学术

Soft excess in AGN with relativistic X‐ray reflection

Published:2023-03-16 Issue:4 Volume:344 Page:
ISSN:0004-6337
Container-title:Astronomische Nachrichten
language:en
Short-container-title:Astron Nachr

Author:

Ezhikode Savithri H.¹^ORCID,P. Shyam Prakash V.²,Dewangan Gulab C.³^ORCID,Mathew Blesson¹^ORCID

Affiliation:

1. Department of Physics and Electronics CHRIST (Deemed to be University) Bengaluru 560029 India

2. Space Astronomy Group, ISITE Campus ISRO Satellite Centre Bengaluru 560037 India

3. Inter‐University Centre for Astronomy and Astrophysics Pune 411007 India

Abstract

The soft X‐ray excess, emission below 2 keV over the X‐ray power‐law, is a marked spectral component in the X‐ray spectra of many Seyfert 1 galaxies. We investigate if the observed soft X‐ray excess in a sample of Seyfert 1s is in accordance with the prediction of the relativistic reflection model by analyzing the XMM‐Newton and NuSTAR spectra. The fractional difference in the soft excess (SE) obtained from the blurred reflection emission predicted (from NuSTAR) and the observed (from XMM‐Newton) luminosities show that the reflection model underestimates the SE emission in our sample. The results point to alternative models (for example, warm Comptonization) to explain the soft X‐ray excess in AGN.

Publisher

Wiley

Subject

Space and Planetary Science,Astronomy and Astrophysics

Link

https://onlinelibrary.wiley.com/doi/pdf/10.1002/asna.20230042

Reference25 articles.

1. EXOSAT observations of a strong soft X-ray excess in MKN 841

2. A hard X-ray view of the soft excess in AGN

3. An explanation for the soft X-ray excess in active galactic nuclei

4. The role of the reflection fraction in constraining black hole spin

5. An Investigation of the Origin of Soft X‐Ray Excess Emission from Ark 564 and Mrk 1044