Black hole candidate XTE J1752-223: Swift observations of canonical states during outburst

Details Black hole candidate XTE J1752-223: Swift observations of canonical states during outburst Black hole candidate XTE J1752-223: Swift observations of canonical states during outburst

2010-07-30

arxiv.org/abs/1007.5430v1

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

8 pages, 8 figures; MNRAS in press

Scientific paper

We present Swift broadband observations of the recently discovered black hole candidate, X-ray transient, XTE J1752-223, obtained over the period of outburst from October 2009 to June 2010. From Swift-UVOT data we confirm the presence of an optical counterpart which displays variability correlated, in the soft state, to the X-ray emission observed by Swift-XRT. The optical counterpart also displays hysteretical behaviour between the states not normally observed in the optical bands, suggesting a possible contribution from a synchrotron emitting jet to the optical emission in the rising hard state. We offer a purely phenomenological treatment of the spectra as an indication of the canonical spectral state of the source during different periods of the outburst. We find that the high energy hardness-intensity diagrams over two separate bands follows the canonical behavior, confirming the spectral states. Our XRT timing analysis shows that in the hard state there is significant variability below 10Hz which is more pronounced at low energies, while during the soft state the level of variability is consistent with being minimal. These properties of XTE J1752-223 support its candidacy as a black hole in the Galactic centre region.

Affiliated with

Also associated with

No associations

Rating

Black hole candidate XTE J1752-223: Swift observations of canonical states during outburst does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Black hole candidate XTE J1752-223: Swift observations of canonical states during outburst, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Black hole candidate XTE J1752-223: Swift observations of canonical states during outburst will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-700641