0559606 - ASÚ 2023 RIV FR eng J - Journal Article
Masini, A. - Wijesekera, J. - Celotti, A. - Boorman, Peter G.
Comprehensive X-ray view of the active nucleus in NGC4258.
Astronomy & Astrophysics. Roč. 663, July (2022), č. článku A87. ISSN 0004-6361. E-ISSN 1432-0746
R&D Projects: GA ČR(CZ) GA22-22643S
Institutional support: RVO:67985815
Keywords : accretion disks * observational methods * spectroscopic techniques
OECD category: Astronomy (including astrophysics,space science)
Impact factor: 6.5, year: 2022
Method of publishing: Open access

We present a detailed broadband X-ray spectrum of NGC4258, with the goal of precisely measuring the coronal luminosity and accretion flow properties of the AGN, in addition to tracking any possible variation across two decades of observations. Methods. We collected archival XMM-Newton, Chandra, Swift/BAT, and NuSTAR spectroscopic observations spanning 15 years and fit them with a suite of state-of-the-art models, including a warped disk model that is suspected to provide the well known obscuration observed in the X-rays. We complemented this information with archival results from the literature.
Permanent Link: https://hdl.handle.net/11104/0333341