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Compton-thick AGN in the NuSTAR era III: A systematic study of the torus covering factor
Stefano Marchesi, Marco Ajello, Xiurui Zhao +9
We present the analysis of a sample of 35 candidate Compton thick (CT-) active galactic nuclei (AGNs) selected in the nearby Universe (average redshift <z>~0.03) with the Swift-BAT…
The Soft-Excess in Mrk 509: Warm Corona or Relativistic Reflection?
Javier A. Garcia, Erin Kara, Dominic Walton +15
We present the analysis of the first NuSTAR observations ( ks), simultaneous with the last SUZAKU observations ( ks), of the active galactic nucleus of the brigh…
Investigating the Covering Fraction Distribution of Swift/BAT AGN with X-ray and IR Observations
Lauranne Lanz, Ryan C. Hickox, Mislav Baloković +12
We present an analysis of a sample of 69 local obscured Swift/Burst Alert Telescope active galactic nuclei (AGNs) with X-ray spectra from NuSTAR and infrared (IR) spectral energy d…
A Mid-IR Selected Changing-Look Quasar and Physical Scenarios for Abrupt AGN Fading
Daniel Stern, Barry McKernan, Matthew J. Graham +11
We report a new changing-look quasar, WISE~J105203.55+151929.5 at , found by identifying highly mid-IR variable quasars in the WISE/NEOWISE data stream. Compared to multi-…
A long hard-X-ray look at the dual active galactic nuclei of M51 with NuSTAR
M. Brightman, M. Baloković, M. Koss +14
We present a broadband X-ray spectral analysis of the M51 system, including the dual active galactic nuclei (AGN) and several off-nuclear point sources. Using a deep observation by…
An Iwasawa-Taniguchi Effect for Compton-thick Active Galactic Nuclei
Peter G. Boorman, Poshak Gandhi, Mislav Balokovic +4
We present the first study of an Iwasawa-Taniguchi/X-ray Baldwin effect for Compton-thick active galactic nuclei (AGN). We report a statistically significant anti-correlation betwe…
New Spectral Model for Constraining Torus Covering Factors from Broadband X-ray Spectra of Active Galactic Nuclei
M. Baloković, M. Brightman, F. A. Harrison +6
The basic unified model of active galactic nuclei (AGN) invokes an anisotropic obscuring structure, usually referred to as a torus, to explain AGN obscuration as an angle-dependent…