| Name: | Jagdish Joshi |
| Affiliation: | ARIES |
| Conference ID : | ASI2024_641 |
| Title : | Probing Cosmic Ray Sources through Multimessenger Modelling: Pevatrons in Our Galaxy |
| Authors : | Jagdish C. Joshi, Abhijit Roy |
| Authors Affiliation: | Aryabhatta Research Institute of Observational Sciences (ARIES),
Manora peak, Beluwakhan, Uttarakhand 263001, India |
| Mode of Presentation: | Invited |
| Abstract Category : | High Energy Phenomena, Fundamental Physics and Astronomy |
| Abstract : | Cosmic rays (CRs) are relativistic particles, mainly protons and ions, that fill our galaxy. Their spectrum spans in the energy range of MeV to ~100 EeV with a Galactic component contributing at least up to 3 PeV. The transition energy where the source class changes from Galactic to extra-galactic is still debatable. The Galactic sources of CRs are still not known; however, plausible sources are colliding-wind binaries, supernova remnants, pulsar wind nebulae, local giant molecular clouds, etc. Ground based Cherenkov telescopes have discovered potential pevatrons in our galaxy. The Large High Altitude Air Shower Observatory (LHAASO) detection of a 1.1 PeV gamma-ray event was found to be associated with the Crab Nebula, and the 1.4 PeV event was correlated with the Cygnus OB2 region. Multiwavelength observations are useful to study galactic CR sources, but neutrino detection confirms their presence. In this talk, I will discuss the recent progress in our understanding of galactic sources using the gamma-ray and neutrino correspondence. |
