21-23 January 2015
Europe/Zurich timezone

Revealing Cosmic-Ray acceleration in the SNR W51C

22 Jan 2015, 18:10
20m

Speaker

Dr. Tobias Jogler (SLAC)

Description

SNR are commonly assumed to accelerate the cosmic rays of E < 1 PeV observed at Earth. SNRs that interact with molecular clouds (MCs) are very promising targets to distinguish between leptonic and hadronic-induced gamma-ray emission. One of the brightest Fermi/LAT-detected SNRs interacting with a MC is W51C. Here we present a very detailed analysis of 5 years of Fermi/LAT data revealing a very significant low-energy break in the gamma-ray spectrum associated with the production threshold of neutral pions. This unmistakable feature of CR-acceleration in W51C is further investigated and we present a detailed modelling of the source with various gamma-ray production mechanisms. We finally compare the derived properties of W51C with those of the other known CR accelerators W44 and IC443.

Primary author

Dr. Tobias Jogler (SLAC)

Presentation Materials

Your browser is out of date!

Update your browser to view this website correctly. Update my browser now

×