277 citations · 1.3k across the 59 of their papers we have counts for
8 papers · 1 filter
Interpreting the long-term variability of the changing-look AGN Mrk 1018
S. Veronese, C. Vignali, P. Severgnini +2
We present a thorough study of the Changing-Look Active Galactic Nucleus (CL-AGN) Mrk 1018, utilizing an extensive dataset spanning optical, UV, and X-ray spectro-photometric data…
The High Energy X-ray Probe (HEX-P): The Circum-nuclear Environment of Growing Supermassive Black Holes
P. G. Boorman, N. Torres-Albà, A. Annuar +32
Ever since the discovery of the first Active Galactic Nuclei (AGN), substantial observational and theoretical effort has been invested into understanding how massive black holes ha…
The High Energy X-ray Probe (HEX-P): Constraining Supermassive Black Hole Growth with Population Spin Measurements
J. M. Piotrowska, J. A. García, D. J. Walton +24
Constraining the primary growth channel of supermassive black holes (SMBH) remains one the most actively debated questions in the context of cosmological structure formation. Owing…
Disc wind or disc line? The extraordinary Fe-K feature of Mrk 1513
R. Middei, E. Nardini, G. A. Matzeu +4
We discuss the origin of a very unusual spectral structure observed in the Fe-K band of the Seyfert galaxy Mrk 1513, a local (=0.063) active galactic nucleus (AGN) that is effic…
Coordinated X-ray and UV absorption within the accretion disk wind of the active galactic nucleus PG 1126-041
M. Giustini, P. Rodríguez Hidalgo, J. N. Reeves +14
Accretion disk winds launched close to supermassive black holes (SMBHs) are a viable mechanism to provide feedback between the SMBH and the host galaxy. We aim to characterize the…
Rapid Variability of the accretion disk wind in the narrow line Seyfert 1, PG 1448+273
James Reeves, Valentina Braito, Delphine Porquet +3
PG 1448+273 is a luminous, nearby (), narrow line Seyfert 1 galaxy, which likely accretes close to the Eddington limit. XMM-Newton observations of PG 1448+273 in 2017 rev…
A hard look at the X-ray spectral variability of NGC 7582
Mehdy Lefkir, Elias Kammoun, Didier Barret +5
NGC 7582 (z = 0.005264; D = 22.5 Mpc) is a highly variable, changing-look AGN. In this work, we explore the X-ray properties of this source using XMM-Newton and NuSTAR archival obs…
Tracking the spectral properties across the different epochs in ESO 511-G030
R. Middei, P. -O. Petrucci, S. Bianchi +14
The Type I active galactic nucleus (AGN) ESO 511-G030, a formerly bright and soft-excess dominated source, has been observed in 2019 in the context of a multi-wavelength monitoring…