QPO in RE J1034+396: model constraints from observed trends

0384833 - ASÚ 2015 RIV GB eng C - Conference Paper (international conference)
Czerny, B. - Lachowicz, P. - Dovčiak, Michal - Karas, Vladimír - Pecháček, Tomáš - Das, T. K.
QPO in RE J1034+396: model constraints from observed trends.
Astronomy at High Angular Resolution : The Central Kiloparsec in Galactic Nuclei. Bristol: Institute of Physics Publishing, 2012, 012055/1-012055/4. Journal of Physics Conference Series, 372. ISSN 1742-6588.
[Astronomy at High Angular Resolution - The Central Kiloparsec in Galactic Nuclei. Bad Honnef (DE), 28.08.2011-02.09.2011]
Grant - others:ESA(XE) ESA-PECS project No. 98040
Institutional research plan: CEZ:AV0Z10030501
Keywords : X-ray emission * active galactic nucleus
Subject RIV: BN - Astronomy, Celestial Mechanics, Astrophysics

We analyze the time variability of the X-ray emission of RE J1034+396, an active galactic nucleus with the first firm detection of a quasi-periodic oscillations (QPO). Based on the results of a wavelet analysis, we find a drift in the QPO central frequency. The change in the QPO frequency correlates with the change in the X-ray flux with a short time delay. Linear structures such as shocks, spiral waves, or very distant flares seem to be a favored explanation for this particular QPO event.
Permanent Link: http://hdl.handle.net/11104/0214334