An unusual timing and spectral state of a black hole microquasar XTE J1550-564

Details An unusual timing and spectral state of a black hole microquasar XTE J1550-564 An unusual timing and spectral state of a black hole microquasar XTE J1550-564

Feb 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009raa.....9..179j&link_type=abstract

Research in Astronomy and Astrophysics, Volume 9, Issue 2, pp. 179-190 (2009).

Astronomy and Astrophysics

Astrophysics

1

Scientific paper

An unusual timing and spectral state of a black hole microquasar XTE J1550-564 observed with RXTE is analyzed. Millisecond variabilities are found, which are significantly shorter than the minimum possible time scale in the light curves of black hole binaries, as suggested by Sunyaev & Revnivtsev (2000). The X-ray spectral fitting result indicates that there is an unusual soft component in the spectrum, which may be responsible for the millisecond variabilities. The millisecond variabilities as well as the unusual soft spectral component should be produced from some small, but independent active regions in the accretion disk.

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