MAXI observations of the black hole candidate XTE J1752-223
Abstract
MAXI observations of the black hole candidate XTE J1752-223 The black hole X-ray nova XTE J1752-223 was discovered by RXTE on October 23, 2009. The GSC detector of MAXI All-sky X-ray Monitor on the International Space Station detected the source on October 23 at about 30 mCrab in the 1.5-20 keV band. Since then, GSC/MAXI mon-itored the source except for an invisible period due to the sun angle constraint from December 7 to 23. The light curve showed two plateaus at 140 mCrab from October 26 to November 25, and at 290 mCrab from December 5 to January 10, 2010. Then the spectrum drastically softened since January 19. The X-ray flux in the 1.5-4 keV band increased by a factor of more than two. Its spectrum turned out to be a shape with two components: a disk blackbody and a power law, suggesting the state transition from the low/hard to the high/soft state. In this paper, observational results by GSC and SSC of MAXI, and from the Suzaku ToO observation will be presented.
- Publication:
-
38th COSPAR Scientific Assembly
- Pub Date:
- 2010
- Bibcode:
- 2010cosp...38.2447N