New Optical Results on gamma-ray Binaries

Details New Optical Results on gamma-ray Binaries New Optical Results on gamma-ray Binaries

2010-12-20

arxiv.org/abs/1012.4351v1

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

4 pages, 2 figures, to be published in the proceedings of the 1st Sant Cugat Forum on Astrophysics, "ICREA Workshop on the hig

Scientific paper

We present new optical spectroscopy of the gamma-ray binary LS 5039. Our data show evidence for sub-orbital modulation in the radial velocities with amplitude ~7 km/s and period ~Porb/4. This short-term oscillation is stable over at least 7 years and it is likely triggered by non-radial oscillations of the O6.5V optical star. We also present the results of a spectroscopic campaign on MWC 148, the optical counterpart of the new gamma-ray binary candidate HESS J0632+067. Long-term variations in the Halpha and Hbeta emission line parameters are clearly detected which, if modulated with the binary orbit, would imply a period >200 days.

Affiliated with

Also associated with

No associations

Rating

New Optical Results on gamma-ray Binaries 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 New Optical Results on gamma-ray Binaries, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and New Optical Results on gamma-ray Binaries will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-454320