Discovery Of The New Gamma-ray Binary 1FGL J1018.6-5856

Details Discovery Of The New Gamma-ray Binary 1FGL J1018.6-5856 Discovery Of The New Gamma-ray Binary 1FGL J1018.6-5856

Sep 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011head...12.0307c&link_type=abstract

American Astronomical Society, HEAD meeting #12, #3.07

Astronomy and Astrophysics

Astrophysics

Scientific paper

We present the discovery of a new gamma-ray binary system from the search for periodic modulation in the 100 MeV to 200 GeV Fermi LAT light curves of all sources in the first Fermi-LAT catalog. 1FGL J1018.6-5856 was found to have a 16.6 day modulation in its gamma-ray light curve that is accompanied by spectral variability. We also identify counterparts in the X-ray, radio and optical wavebands using data from the Swift XRT, ATCA, and telescopes at SAAO and LCO. The X-ray and radio counterparts are highly variable - the X-ray flux is modulated on the orbital period with maximum X-ray flux coinciding with the phase of maximum gamma-ray flux. The optical counterpart has a spectral type of approximately O6V((f)) and shows little variability in a series of Swift UVOT observations. The overall properties of 1FGL J1018.6-5856 indicate that it is a member of the rare gamma-ray binary class of objects, and that it shares several properties with LS 5039. However, there are also several differences from LS 5039, including the relative phasing of the gamma-ray flux and spectral modulation and the shape of the X-ray light curve. The similarities and differences are expected to allow us to more fully develop our understanding of the astrophysics involved in these enigmatic objects.

Affiliated with

Also associated with

No associations

Rating

Discovery Of The New Gamma-ray Binary 1FGL J1018.6-5856 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 Discovery Of The New Gamma-ray Binary 1FGL J1018.6-5856, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Discovery Of The New Gamma-ray Binary 1FGL J1018.6-5856 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1402093