2002A&A...390L..43R -
Astronomy and Astrophysics, volume 390, L43-46 (2002/8-2)
No evidence yet for hadronic TeV gamma-ray emission from SNR RX J1713.7-3946.
REIMER O. and POHL M.
Abstract (from CDS):
Recent TeV-scale γ-ray observations with the CANGAROO II telescope have led to the claim that the multi-band spectrum of RX J1713.7-3946 cannot be explained as the composite of a synchrotron and an inverse Compton component emitted by a population of relativistic electrons. It was argued that the spectrum of the high-energy emission is a good match to that predicted by pion decay, thus providing observational evidence that protons are accelerated in SNR to at least TeV energies. In this Letter we discuss the multi-band spectrum of RX J1713.7-3946 under the constraint that the GeV-scale emission observed from the closely associated EGRET source 3EG J1714-3857 is either associated with the SNR or an upper limit to the gamma-ray emission of the SNR. We find that the pion-decay model adopted by Enomoto et al. is in conflict with the existing GeV data. We have examined the possibility of a modified proton spectrum to explain the data, and find that we cannot do so within any existing theoretical framework of shock acceleration models.
Abstract Copyright:
∼
Journal keyword(s):
ISM: cosmic rays - ISM: supernova remnants - gamma rays: observations
Simbad objects:
4
Full paper
View the references in ADS
To bookmark this query, right click on this link: simbad:2002A&A...390L..43R and select 'bookmark this link' or equivalent in the popup menu