PoS - Proceedings of Science
Volume 444 - 38th International Cosmic Ray Conference (ICRC2023) - Gamma-ray Astronomy (GA)
Constraints on cosmic-ray interaction and propagation within the HB3 W3 complex using Fermi-LAT data
A. Clement*, M. Lemoine-Goumard, V. Wakelam, P. Slane and P. Gratier
Full text: pdf
Pre-published on: August 17, 2023
Published on:
Diffusive shock acceleration in supernovae can accelerate particles to very-high energies (VHE, E > 100 GeV). HB3 is a supernova remnant (SNR) detected by the Fermi Large Area Telescope in 2016 with 6 years of data, adjacent to the south-eastern part of the giant HII complex W3. The low energy gamma-ray emission of both systems shows a clear signature of proton acceleration. Here we use a significantly larger dataset of 14 years of data with the improved P8R3 instrument response functions to perform a precise morphological study of the SNR and W3 above 1 GeV using multi-wavelength data in the X-ray and radio bands. This allows us to derive the spectra of both systems above 100 MeV. In this presentation, we will review the consequences of this precise analysis providing new constraints on the acceleration and propagation of cosmic rays in this region.
DOI: https://doi.org/10.22323/1.444.0578
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.