X-ray and optical variability of the ultraluminous X-ray source NGC 1313 X-2

Details X-ray and optical variability of the ultraluminous X-ray source NGC 1313 X-2 X-ray and optical variability of the ultraluminous X-ray source NGC 1313 X-2

2006-12-15

arxiv.org/abs/astro-ph/0612420v1

Astronomy and Astrophysics

Astrophysics

19 pages, 4 figures, accepted for pubblication on ApJ

Scientific paper

We present an analysis of recent XMM-Newton and HST archive data of the ultraluminous X-ray source NGC 1313 X-2. Quasi-simultaneous observations taken with XMM-Newton, HST and VLT allow us to study both the X-ray light curve and its correlation with the optical emission of the two proposed ULX counterparts. At the end of December 2003 the source experienced a short, but intense flare, reaching a maximum luminosity of ~10^40 erg/s. At the same time, the optical flux of both the suggested counterparts did not show pronounced variations (<30%). Assuming that the ULX emission is isotropic and taking X-ray reprocessing into account, the optical data for one of the proposed counterparts are consistent with it being an early type, main sequence star of about 10-18 Msun losing matter through Roche-lobe overflow onto a ~120 Msun black hole at an orbital separation corresponding to a period of about 2 days.

Affiliated with

Also associated with

No associations

Rating

X-ray and optical variability of the ultraluminous X-ray source NGC 1313 X-2 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 X-ray and optical variability of the ultraluminous X-ray source NGC 1313 X-2, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and X-ray and optical variability of the ultraluminous X-ray source NGC 1313 X-2 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-132090