Gamma-ray Emission from Crushed Clouds in Supernova Remnants

Hiroyasu Tajima; Roger Blandford; Stefan Funk; Takaaki Tanaka; Yasunobu Uchiyama

arxiv: 1008.1840 · v2 · pith:3JUMHMBAnew · submitted 2010-08-11 · 🌌 astro-ph.HE

Gamma-ray Emission from Crushed Clouds in Supernova Remnants

Yasunobu Uchiyama , Roger Blandford , Stefan Funk , Hiroyasu Tajima , Takaaki Tanaka This is my paper

classification 🌌 astro-ph.HE

keywords emissiongamma-rayobservedsupernovacloudmodelradioremnants

0 comments

read the original abstract

It is shown that the radio and gamma-ray emission observed from newly-found "GeV-bright" supernova remnants (SNRs) can be explained by a model, in which a shocked cloud and shock-accelerated cosmic rays (CRs) frozen in it are simultaneously compressed by the supernova blastwave as a result of formation of a radiative cloud shock. Simple reacceleration of pre-existing CRs is generally sufficient to power the observed gamma-ray emission through the decays of neutral pions produced in hadronic interactions between high-energy protons (nuclei) and gas in the compressed-cloud layer. This model provides a natural account of the observed synchrotron radiation in SNRs W51C, W44 and IC 443 with flat radio spectral index, which can be ascribed to a combination of secondary and reaccelerated electrons and positrons.

This paper has not been read by Pith yet.

discussion (0)

Forward citations

Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

IceCube Results and Perspective for Neutrinos from LHAASO Sources
astro-ph.HE 2024-04 unverdicted novelty 2.0

Reviews IceCube neutrino results, models Galactic plane flux from cosmic ray interactions with the interstellar medium, and discusses prospects for identifying PeVatrons via LHAASO sources.