Near-infrared polarimetry as a tool for testing properties of radiation from Sagittarius A*

0359760 - ASÚ 2012 RIV US eng C - Konferenční příspěvek (zahraniční konf.)
Zamaninasab, M. - Witzel, G. - Eckart, A. - Sabha, N. - Dovčiak, Michal - Karas, Vladimír - Schoedel, R. - García-Marín, M. - Kunneriath, D. - Nishiyama, S. - Straubmeier, C. - Valencia-S, M. - Zensus, A.
Near-infrared polarimetry as a tool for testing properties of radiation from Sagittarius A*.
The Galactic Center: A Window to the Nuclear Environment of Disk Galaxies. San Francisco: Astronomical Society of the Pacific, 2011 - (Morris, M.; Wang, Q.; Yuan, F.), s. 323-326. ASP Conference Series, 439. ISBN 978-1-58381-758-2.
[The Galactic Centre: A Window to the Nuclear Environment of Disk Galaxies. Shanghai (CN), 19.10.2009-23.10.2009]
Grant CEP: GA ČR GA205/07/0052
Výzkumný záměr: CEZ:AV0Z10030501
Klíčová slova: galactic centre
Kód oboru RIV: BN - Astronomie a nebeská mechanika, astrofyzika

We survey the potential of near-infrared and X-ray polarimetry to constrain physical properties of such black hole systems, namely, their spin and inclination. We have focused on a model where an orbiting hotspot is embedded in an accretion disc. A new method of searching for the time-lag between orthogonal polarization channels is developed and applied to an ensemble of hotspot models that samples a wide range of parameter space.
Trvalý link: http://hdl.handle.net/11104/0197478