TÖRÖK, Gabriel. A possible 3:2 orbital epicyclic resonance in QPOs frequencies of Sgr A. Astronomy & Astrophysics. FR - Francouzská republika, 2005, vol. 440, No 1, p. 1-4. ISSN 0004-6361. Available from: https://dx.doi.org/10.1051/0004-6361:20042558.
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Basic information
Original name A possible 3:2 orbital epicyclic resonance in QPOs frequencies of Sgr A
Authors TÖRÖK, Gabriel.
Edition Astronomy & Astrophysics, FR - Francouzská republika, 2005, 0004-6361.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10308 Astronomy
Confidentiality degree is not subject to a state or trade secret
WWW URL
Organization unit Faculty of Philosophy and Science in Opava
Doi http://dx.doi.org/10.1051/0004-6361:20042558
UT WoS 000231358000005
Keywords in English black hole physics, X-rays, Sgr A
Tags , MSM4781305903
Tags International impact, Reviewed
Links MSM4781305903, plan (intention).
Changed by Changed by: Mgr. Pavlína Jalůvková, učo 25213. Changed: 6/4/2021 08:47.
Abstract
A recent measurement of double peak QPOs frequencies in Sgr A is consistent with the 3:2 ratio. The same ratio is firmly established by previous observations in all double peak kHz QPOs in microquasars and theoretically explained by orbital epicyclic resonances excited in nearly Keplerian accretion flow in black holes strong gravity. If confirmed, the 3:2 ratio of double peak QPOs in Sgr A will be of a fundamental importance for the black hole accretion theory, by providing another clear argument that the accretion disk oscillations are indeed governed by non-linear, strong-gravity physics.
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