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Are Compton-thin AGNs Globally Compton Thin?We select eight nearby active galactic nuclei (AGNs) which, based on previous work, appear to be Compton-thin in the line of sight. We model with MYTORUS their broadband X-ray spectra from 20 individual observations with Suzaku, accounting self-consistently for Fe Kα line emission, as well as direct and scattered continuum from matter with finite column density and solar Fe abundance. Our model configuration allows us to measure the global, out of the line of sight, equivalent hydrogen column density separately from that in the line of sight. For 5 out of 20 observations (in 3 AGNs) we find that the global column density is in fact ≳1.5 × 1024 per sq.cm, consistent with the distant scattering matter being Compton-thick. For a fourth AGN, two out of five observations are also consistent with being Compton-thick, although with large errors. Some of these AGNs have been reported to host relativistically broadened Fe Kα emission. Based on our modeling, the Fe Kα emission line is not resolved in all but two Suzaku observations, and the data can be fitted well with models that only include a narrow Fe Kα emission line.
Document ID
20220001917
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
Authors
P. Tzanavaris ORCID
(University of Maryland, Baltimore County Baltimore, Maryland, United States)
T. Yaqoob
(University of Maryland, Baltimore County Baltimore, Maryland, United States)
S. LaMassa ORCID
(Space Telescope Science Institute Baltimore, Maryland, United States)
A. Ptak ORCID
(Goddard Space Flight Center Greenbelt, Maryland, United States)
M. Yukita
(Johns Hopkins University Baltimore, Maryland, United States)
Date Acquired
February 3, 2022
Publication Date
November 23, 2021
Publication Information
Publication: The Astrophysical Journal
Publisher: American Astronomical Society / IOP Publishing
Volume: 922
Issue: 1
Issue Publication Date: November 20, 2021
ISSN: 0004-637X
e-ISSN: 1538-4357
Subject Category
Astrophysics
Astronomy
Funding Number(s)
WBS: 244904.04.10.01.02.05
CONTRACT_GRANT: 80NSSC18K0408
CONTRACT_GRANT: NNH17ZDA001N-ADAP
CONTRACT_GRANT: 80GSFC21M0002
Distribution Limits
Public
Copyright
Use by or on behalf of the US Gov. Permitted.
Technical Review
External Peer Committee
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