X-RAY VARIABILITY STUDY OF POLAR SCATTERED SEYFERT1 GALAXIES
| Autor: | Matteo Guainazzi, A. L. Longinotti, Matthias Kadler, Giovanni Miniutti, Ignacio de la Calle, T. Beuchert, Jörn Wilms |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Physics
Line-of-sight Astrophysics::High Energy Astrophysical Phenomena General Engineering Optical polarization Torus Astrophysics Unified Model Astrophysics::Cosmology and Extragalactic Astrophysics Viewing angle Polarization (waves) Galaxy lcsh:TA1-2040 Polar lcsh:Engineering (General). Civil engineering (General) Astrophysics::Galaxy Astrophysics |
| Zdroj: | Acta Polytechnica, Vol 54, Iss 4, Pp 266-270 (2014) |
| ISSN: | 1805-2363 1210-2709 |
| Popis: | We study 12 Seyfert 1 galaxies with a high level of optical polarization. Optical light emerging from the innermost regions is predominantly scattered in a polar region above the central engine directly in our line of sight. These sources show characteristics of Seyfert 2 galaxies, e.g. polarized broad lines. The polarization signatures suggest a viewing angle of 45°, classifying them as intermediate Seyfert 1/2 types. The unified model predicts this line of sight to pass through the outer layer of the torus resulting in significant soft X-ray variability due to a strongly varying column density. The aim is to find evidence for this geometrical assumption in the spectral variability of all available historical observations of these sources by XMM-Newton and Swift. |
| Databáze: | OpenAIRE |
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