Volume 548, December 2012
|Number of page(s)||3|
|Published online||13 November 2012|
Mass estimate of the Swift J 164449.3+573451 supermassive black hole based on the 3:2 QPO resonance hypothesis
Copernicus Astronomical Center, ul. Bartycka 18,
2 Physics Department, Gothenburg University, 412-96 Göteborg, Sweden
3 Astronomy Department, Peking University, 100871 Beijing, PR China
Accepted: 30 September 2012
A dormant Swift source J 164449.3+573451 (Sw 164449+57) recently experienced a powerful outburst, caused most probably by a tidal disruption of a star by the supermassive black hole at the center of the source. During the outburst, a quasi periodic oscillation (QPO) was detected in the observed X-ray flux from Sw 164449+57. We show that if the observed QPO belongs to a “3:2 twin peak QPO” (with the second frequency not observed), the mass of the black hole in Sw 164449+57 is rather low, M ~ 105 M⊙, and the source belongs to a class of intermediate mass black holes. The low mass of the source has been pointed out previously by several authors.
Key words: black hole physics / X-rays: bursts
© ESO, 2012
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.