Astronomy and Astrophysics – Astrophysics
Scientific paper
2008-04-08
Astronomy and Astrophysics
Astrophysics
13 pages, 7 figures, accepted by Astronomy and Astrophysics
Scientific paper
10.1051/0004-6361:200809424
In this paper we complete the set of diagnostic tools for synchrotron emitting sources presented by Del Zanna et al. (Astron. Astrophys. 453, 621, 2006) with the computation of inverse Compton radiation from the same relativistic particles. Moreover we investigate, for the first time, the gamma-ray emission properties of Pulsar Wind Nebulae in the light of the axisymmetric jet-torus scenario. The method consists in evolving the relativistic MHD equations and the maximum energy of the emitting particles. The particle energy distribution function is split in two components: the radio one connected to a relic population born at the outburst of the supernova and the other associated to the wind population continuously accelerated at the termination shock and emitting up to the gamma-ray band. We consider the general Klein-Nishina cross section and three different photon targets: the nebular synchrotron photons, far-infrared thermal ones and the cosmic microwave background. The overall synchrotron spectrum is fitted assuming an excess of injected particles and a steeper power law with respect to previous models. The TeV emission has the correct shape but is in excess of the data. This is due to the nebular magnetic field structure as obtained by the simulations. The jet-torus morphology is visible in high-resolution gamma-ray synthetic maps too. We present a preliminary exploration of time variability in the X and gamma-ray bands.
Amato Elena
Bucciantini Niccolo
Del Zanna Luca
Volpi Delia
No associations
LandOfFree
Non-thermal emission from relativistic MHD simulations of PWNe: from synchrotron to inverse Compton 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 Non-thermal emission from relativistic MHD simulations of PWNe: from synchrotron to inverse Compton, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-thermal emission from relativistic MHD simulations of PWNe: from synchrotron to inverse Compton will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-540878