Fermi-LAT observations of the exceptional gamma-ray outbursts of 3C 273 in September 2009

Astronomy and Astrophysics – Astrophysics – High Energy Astrophysical Phenomena

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Corresponding authors: E. Massaro, enrico.massaro@uniroma1.it; G. Tosti, gino.tosti@pg.infn.it. 15 pages, 4 figures, published

Scientific paper

We present the light curves and spectral data of two exceptionally luminous gamma-ray outburts observed by the Large Area Telescope (LAT) experiment on board Fermi Gamma-ray Space Telescope from 3C 273 in September 2009. During these flares, having a duration of a few days, the source reached its highest gamma-ray flux ever measured. This allowed us to study in some details their spectral and temporal structures. The rise and decay are asymmetric on timescales of 6 hours, and the spectral index was significantly harder during the flares than during the preceding 11 months. We also found that short, very intense flares put out the same time-integrated energy as long, less intense flares like that observed in August 2009.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Fermi-LAT observations of the exceptional gamma-ray outbursts of 3C 273 in September 2009 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 Fermi-LAT observations of the exceptional gamma-ray outbursts of 3C 273 in September 2009, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fermi-LAT observations of the exceptional gamma-ray outbursts of 3C 273 in September 2009 will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-179322

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.