XTE J1752-223 seen by RXTE in Black Hole Intermediate State

Details XTE J1752-223 seen by RXTE in Black Hole Intermediate State XTE J1752-223 seen by RXTE in Black Hole Intermediate State

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010atel.2391....1s&link_type=abstract

The Astronomer's Telegram, #2391

Astronomy and Astrophysics

Astronomy

3

X-Ray, Binaries, Black Holes, Transients

Scientific paper

The first pointed RXTE observation of a new Galactic black hole candidate XTE J1752-223 (Atel #2258) after a two month period of invisibility due to Sun constrains showed that the source has changed its spectral state from a long stable extreme hard state (Atel #2269). Both thermal and a power-law component are present in the energy spectrum. The photon index of the non-thermal part is 1.9. The variability shows a broad band-limited noise with a break at 0.5 Hz accompanied by a strong low frequency quasi-periodic oscillation (QPO) at 2.2 Hz.

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