Direct probe of the inner accretion flow around the supermassive black hole in NGC 2617

2016/08/31 by M. Giustini, E. Costantini, B. De Marco +19
Physics and Astronomy · #Accretion (finance) #Accretion disc #Active galactic nucleus #Astronomy #Astrophysical Phenomena and Observations #Astrophysics #Black hole (networking) #Flux (metallurgy) #Galaxies: Formation, Evolution, Phenomena #Galaxy #Nucleus #Physics #Pulsars and Gravitational Waves Research #Supermassive black hole #astro-ph.GA #astro-ph.HE

paper · pdf · doi:10.1051/0004-6361/201628686

published as 2017A&A...597A..66G · Replaced to match the published version

openalex publication_date 2016/11/16 · arxiv created 2017/01/24 · arxiv updated 2017/01/25 · openalex created_date 2020/11/23 · openalex updated_date 2026/08/05

Abstract

Aims. NGC 2617 is a nearby (z ~ 0.01) active galaxy that recently switched from being a Seyfert 1.8 to be a Seyfert 1.0. At the same time, it underwent a strong increase of X-ray flux by one order of magnitude with respect to archival measurements. We characterise the X-ray spectral and timing properties of NGC 2617 with the aim of studying the physics of a changing-look active galactic nucleus (AGN).

Citations

• Intrinsic disc emission and the soft X-ray excess in active galactic nuclei
• Relativistic blue‐ and red‐shifted absorption lines in AGNs
• The INTEGRAL Science Data Centre (ISDC)
• On the evidence for narrow, relativistically shifted X-ray lines
• The Ultraviolet-X-Ray Connection in AGN Outflows
• On characterizing the variability properties of X-ray light curves from active galaxies
• Multiphase, non-spherical gas accretion on to a black hole