Personal tools
Log in
You are here: Home Research Activities Relativistic and Particle Astrophysics The origin of cosmic rays and dark matter

The origin of cosmic rays and dark matter

The last three years have seen unprecedented developments in the field of the physics of cosmic rays, both from an observational and theoretical point of view. Observations made with the Cherenkov, MAGIC, VERITAS and HESS telescopes have led to the detection of high energy gamma-rays from supernova remnants, the most plausible sources of Galactic cosmic rays. From a theoretical point of view, recent years have seen the development of a non-linear theory for particle acceleration in supernova remnants, a crucial ingredient for the understanding of the origin of cosmic rays and to describe the multi-frequency observations of these sources.

Studies into the origin of cosmic rays have a long tradition in Italy and the Italian community continues to play an extremely important and active role today. This is illustrated not only by the number of scientists of various levels involved, for example, in the search for sources with the Fermi satellite or the operation of PAO, but also by the importance and resonance of the results achieved. INAF is also providing a key contribution to the hardware of the MAGIC-II telescope.

There have been two important developments in the last three years on the theoretical/phenomenological side: 1) the formalisation of a non-linear theory for particle acceleration in shock waves, 2) the development of the model of the dip for the transition of Galactic and extragalactic cosmic rays. Forthcoming years will be a golden period for the field of cosmic ray research given that the Fermi telescope and Cherenkov telescopes and ground-based detectors are already inundating the field with precious data. Italian groups have provided a fundamental contribution to this field, and will continue to investigate the many aspects that are still unclear, from the connection between supernova remnants and and cosmic rays observed from the Earth to the extension of studies of the interaction between cosmic rays and the region around the source. In this field, use is made of large structures such as KASCADE Grande, the Pierre Auger Observatory, MAGIC and Jem-EUSO.

The long journey of human missions to Mars and back to Earth

Aug 09, 2021

The long journey of human missions to Mars and back to Earth The Embassy of Italy, in collaboration with the Italian Cultural Institute in Sydney and the Australian Academy of Science, invites you to an Italian Night with Five Southern Stars!

Gaia draws a new map of the galactic spirals

Jul 28, 2021

Gaia draws a new map of the galactic spirals An international team led by researchers of the the Italian National Institute for Astrophysics (INAF) has compiled the most detailed map yet of the Milky Way’s spiral structure within about 16,000 light years from the Sun, by making use of the position and brightness of around 600,000 young stars measured by Gaia, the European Space Agency’s star surveyor

The morphology of the X-ray afterglows and of the jetted GeV emission in long gamma-ray bursts

May 12, 2021

The morphology of the X-ray afterglows and of the jetted GeV emission in long gamma-ray bursts In a new article published in the Monthly Notices of the Royal Astronomical Society, an ICRA-ICRANet research team (some of them INAF associates) sheds light on the mass and spin of stellar-mass BHs from an extensive analysis of long-duration GRBs