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Changing-look active galactic nuclei
Active galactic nuclei (AGNs) are known to show flux variability over all observable
timescales and across the entire electromagnetic spectrum. Over the past decade, a growing …
timescales and across the entire electromagnetic spectrum. Over the past decade, a growing …
The Galaxy Activity, Torus, and Outflow Survey (GATOS)-I. ALMA images of dusty molecular tori in Seyfert galaxies
We present the first results of the Galaxy Activity, Torus, and Outflow Survey (GATOS), a
project aimed at understanding the properties of the dusty molecular tori and their …
project aimed at understanding the properties of the dusty molecular tori and their …
WISE view of changing-look active galactic nuclei: evidence for a transitional stage of AGNs
The discovery of changing-look active galactic nuclei (CLAGNs) with a significant change in
optical broad emission lines (optical CLAGNs) and/or strong variation of line-of-sight column …
optical broad emission lines (optical CLAGNs) and/or strong variation of line-of-sight column …
Survey of Bare Active Galactic Nuclei in the Local Universe (z< 0.2). I. On the Origin of Soft Excess
We analyze a sample of 21" bare" Seyfert 1 active galactic nuclei, a subclass of Seyfert 1
galaxies, with intrinsic absorption NH∼ 10 20 cm− 2, in the local Universe (z< 0.2) using …
galaxies, with intrinsic absorption NH∼ 10 20 cm− 2, in the local Universe (z< 0.2) using …
Coronal properties of low-accreting AGNs using Swift, XMM–Newton, and NuSTAR observations
We studied the broad-band X-ray spectra of Swift/Burst Alert Telescope selected low-
accreting active galactic nuclei (AGNs) using the observations from XMM–Newton, Swift …
accreting active galactic nuclei (AGNs) using the observations from XMM–Newton, Swift …
Investigating changing-look active galactic nuclei with long-term optical and X-ray observations
Context. Broad emission lines in the UV/optical spectra of changing-look active galactic
nuclei (CLAGNs) appear and disappear on timescales of months to decades. Aims. We …
nuclei (CLAGNs) appear and disappear on timescales of months to decades. Aims. We …
Broad-band X-ray observations of the 2018 outburst of the changing-look active galactic nucleus NGC 1566
We study the nature of the changing-look active galactic nucleus NGC 1566 during its 2018
June outburst. During the outburst, the X-ray intensity of the source rises up to∼ 25–30 …
June outburst. During the outburst, the X-ray intensity of the source rises up to∼ 25–30 …
Hydrogen column density variability in a sample of local Compton-thin AGN
We present the analysis of multiepoch observations of a set of 12 variable, Compton-thin,
local (z< 0.1) active galactic nuclei (AGN) selected from the 100-month BAT catalog. We …
local (z< 0.1) active galactic nuclei (AGN) selected from the 100-month BAT catalog. We …
Long-term X-ray temporal and spectral study of a Seyfert galaxy Mrk 6
We present a long-term X-ray study of a nearby Active Galactic Nucleus Mrk 6, utilizing
observations from XMM–Newton, Suzaku, Swift, and NuSTAR observatories, spanning 22 …
observations from XMM–Newton, Suzaku, Swift, and NuSTAR observatories, spanning 22 …
Long-term X-ray observations of seyfert 1 galaxy ark 120: on the origin of soft-excess
We present the long-term X-ray spectral and temporal analysis of a 'bare-type AGN'Ark 120.
We consider the observations from XMM–Newton, Suzaku, Swift, and NuSTAR from 2003 to …
We consider the observations from XMM–Newton, Suzaku, Swift, and NuSTAR from 2003 to …