Near infrared flares of Sagittarius A* - Importance of near infrared polarimetry

0337974 - ASÚ 2010 RIV FR eng J - Journal Article
Zamaninasab, M. - Eckart, A. - Witzel, G. - Dovčiak, Michal - Karas, Vladimír - Schoedel, R. - Giessuebel, R. - Bremer, M. - García-Marín, M. - Kunneriath, D. - Muzic, K. - Nishiama, S. - Sabha, N. - Straubmeier, C. - Zensus, A.
Near infrared flares of Sagittarius A* - Importance of near infrared polarimetry.
Astronomy & Astrophysics. Roč. 510, - (2010), A3-1-A3-25. ISSN 0004-6361. E-ISSN 1432-0746
R&D Projects: GA ČR GA205/07/0052
Institutional research plan: CEZ:AV0Z10030501
Keywords : astrophysics
Subject RIV: BN - Astronomy, Celestial Mechanics, Astrophysics
Impact factor: 4.410, year: 2010

We probe the existence of a correlation between the modulations of the observed flux density light curves and changes in polarimetric data. Furthermore, we confirm that the same correlation is also predicted by the hot spot model. Correlations between intensity and polarimetric parameters of the observed light curves as well as a comparison of predicted and observed light curve features through a pattern recognition algorithm result in the detection of a signature of orbiting matter under the influence of strong gravity. This pattern is detected statistically significant against randomly polarized red noise. Expected results from future observations of VLT interferometry like GRAVITY experiment are also discussed.
Permanent Link: http://hdl.handle.net/11104/0181850