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AGN spectral states from simultaneous UV and X-ray observations by XMM-Newton
- 1.0484703 - ASÚ 2018 RIV FR eng J - Journal Article
Svoboda, Jiří - Guainazzi, M. - Merloni, A.
AGN spectral states from simultaneous UV and X-ray observations by XMM-Newton.
Astronomy & Astrophysics. Roč. 603, July (2017), A127/1-A127/13. ISSN 0004-6361. E-ISSN 1432-0746
R&D Projects: GA ČR(CZ) GP14-20970P; GA MŠMT(CZ) 7E13012
EU Projects: European Commission(XE) 312789 - STRONGGRAVITY
Institutional support: RVO:67985815
Keywords : black hole physics * accretion disks * galaxies nuclei
OECD category: Astronomy (including astrophysics,space science)
Impact factor: 5.565, year: 2017
While XRBs evolve rapidly and several sources have undergone a few complete cycles from quiescence to an outburst and back, most AGN remain in the same state over periods of years and decades, due to their longer characteristic timescale proportional to their size. However, the study of the AGN spectral states is still possible with a large sample of sources. Multi-wavelength observations are needed for this purpose since the AGN thermal disc emission dominates in the ultraviolet energy range, while the up-scattered hot-corona emission is detected in X-rays.
Permanent Link: http://hdl.handle.net/11104/0279837
Number of the records: 1