It is widely believed that the bulk of the Galactic cosmic rays are accelerated in supernova remnants (SNRs). However, no observational evidence of the presence of particles of PeV energies in SNRs has yet been found. The young historical SNR Cassiopeia A (Cas A) appears as one of the best candidates to study acceleration processes. Between December 2014 and October 2016 we observed Cas A with the MAGIC telescopes, accumulating 158 hours of good-quality data. We derived the spectrum of the source from 100 GeV to 10 TeV. We also analysed $\sim$8 years of $Fermi$-LAT to obtain the spectral shape between 60 MeV and 500 GeV. The spectra measured by the LAT and MAGIC telescopes are compatible within the errors and show a clear turn off (4.6 $\si...
Supernova remnants are considered to be the main source of galactic cosmic rays up to the knee of th...
Context. Puppis A is an interesting ~4 kyr-old supernova remnant (SNR) that shows strong evidence of...
GeV and TeV emission from the forward shocks of supernova remnants (SNRs) indicates that they are ca...
It is widely believed that the bulk of the Galactic cosmic rays is accelerated in supernova remnants...
SNR G24.7+0.6 is a 9.5 kyrs radio and γ-ray supernova remnant evolving in a dense medium. In the GeV...
The SNR G106.3+2.7, detected at 1--100 TeV energies by different $\gamma$-ray facilities, is one of ...
Context. Certain types of supernova remnants (SNRs) in our Galaxy are assumed to be PeVatrons, capab...
232 hours of data were accumulated from 1997 to 1999, using the HEGRA Stereoscopic Cherenkov Telesco...
If cosmic rays with energies 500 GeV flux are reported. Non-thermal X-ray emission detected from one...
If supernova remnants (SNRs) are the sites of cosmic-ray acceleration, the associated nuclear intera...
Combining archival data taken at radio and infrared wavelengths with state-of-the-art measurements a...
The origin of Galactic cosmic rays is still a burning question that forms a major motivation for dev...
If cosmic rays with energies 500 GeV flux are reported. Non-thermal X-ray emission detected from one...
Context. Diffusive shock acceleration (DSA) is the most promising mechanism that accelerates Galacti...
Supernova remnants are considered to be the main source of galactic cosmic rays up to the knee of th...
Context. Puppis A is an interesting ~4 kyr-old supernova remnant (SNR) that shows strong evidence of...
GeV and TeV emission from the forward shocks of supernova remnants (SNRs) indicates that they are ca...
It is widely believed that the bulk of the Galactic cosmic rays is accelerated in supernova remnants...
SNR G24.7+0.6 is a 9.5 kyrs radio and γ-ray supernova remnant evolving in a dense medium. In the GeV...
The SNR G106.3+2.7, detected at 1--100 TeV energies by different $\gamma$-ray facilities, is one of ...
Context. Certain types of supernova remnants (SNRs) in our Galaxy are assumed to be PeVatrons, capab...
232 hours of data were accumulated from 1997 to 1999, using the HEGRA Stereoscopic Cherenkov Telesco...
If cosmic rays with energies 500 GeV flux are reported. Non-thermal X-ray emission detected from one...
If supernova remnants (SNRs) are the sites of cosmic-ray acceleration, the associated nuclear intera...
Combining archival data taken at radio and infrared wavelengths with state-of-the-art measurements a...
The origin of Galactic cosmic rays is still a burning question that forms a major motivation for dev...
If cosmic rays with energies 500 GeV flux are reported. Non-thermal X-ray emission detected from one...
Context. Diffusive shock acceleration (DSA) is the most promising mechanism that accelerates Galacti...
Supernova remnants are considered to be the main source of galactic cosmic rays up to the knee of th...
Context. Puppis A is an interesting ~4 kyr-old supernova remnant (SNR) that shows strong evidence of...
GeV and TeV emission from the forward shocks of supernova remnants (SNRs) indicates that they are ca...