Astronomy and Astrophysics – Astrophysics – Cosmology and Extragalactic Astrophysics
Scientific paper
2010-03-17
Astronomy and Astrophysics
Astrophysics
Cosmology and Extragalactic Astrophysics
13 pages, 9 figures, revised version accepted for publication in MNRAS
Scientific paper
In the first week of December 2009, the blazar 3C 454.3 became the brightest high energy source in the sky. Its photon flux reached and surpassed the level of 1e-5 ph/cm2/s above 100 MeV. The Swift satellite observed the source several times during the period of high gamma-ray flux, and we can construct really simultaneous spectral energy distributions (SED) before, during, and after the luminosity peak. Our main findings are: i) the optical, X-ray and gamma-ray fluxes correlate; ii) the gamma-ray flux varies quadratically (or even more) with the optical flux; iii) a simple one-zone synchrotron inverse Compton model can account for all the considered SED; iv) in this framework the gamma-ray vs optical flux correlation can be explained if the magnetic field is slightly fainter when the overall jet luminosity is stronger; v) the power that the jet spent to produce the peak gamma-ray luminosity is of the same order, or larger, than the accretion disk luminosity. During the flare, the total jet power surely surpassed the accretion power.
Bonnoli Giacomo
Foschini Luca
Ghirlanda Giancarlo
Ghisellini Gabriele
Tavecchio Fabrizio
No associations
LandOfFree
The gamma-ray brightest days of the blazar 3C 454.3 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 The gamma-ray brightest days of the blazar 3C 454.3, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The gamma-ray brightest days of the blazar 3C 454.3 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-699670