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Information × Registration Number 0224U031921, 0122U001474 , R & D reports Title Multi-channel studies of the processes of generating cosmic rays and non-thermal radiation in relativistic jets of astrophysical objects. popup.stage_title Head Danylevskyi Vasyl O., Кандидат фізико-математичних наук Registration Date 02-07-2024 Organization Taras Shevchenko National University of Kyiv popup.description2  The project is aimed at researching high-energy processes in astronomical objects based on data from their multimessenger (electromagnetic and neutrino radiation, gravitational waves and cosmic ray (CR)) observations, which is commonly called multimessenger astronomy. The key element of multimessenger astronomy are CRs: high-energy (with maximum energies over 1020 eV) ultrarelativistic protons and nuclei of heavier elements, electrons and positrons.The interaction of CRs with the components of the interstellar or intergalactic medium – plasma, magnetic fields and radiation – leads to the generation of the other two messengers – high-energy photons and neutrinos. The refore, the basis of modeling of high-energy processes is the establishment of mechanisms for the CR acceleration. CRs are especially effectively accelerated in relativistic jets of astrophysical objects – active galactic nuclei (AGN), compact objects (neutron stars or black holes of stellar masses) in binary star systems, Supernova outburst and giant flares of magnetars – neutron stars with record-breaking highmagnetic fields, etc.During Stage 2 of the project, models of CR and neutrino generation by relativistic jets and shock waves, formed in such Galactic and extragalactic objects as Supernova remnants, magnetars, and AGN, were built. Special attention was paid to the modeling of the energy spectra of CRs accelerated at the fronts of shock waves in these objects. In particular, the expected fluxes and spectra of CRs accelerated during the flare activity in the AGN jets, CRs of extremely high energies from the hypothetical Galactic Hypernova and magnetar-wind nebula, which could have been generated by the magnetar SGR 1900+14, were calculated.On the basis of energy fluxes and CR spectra for a number of sources, prognostic calculations of expected gamma-ray fluxes in the GeV-TeV range were performed. Product Description popup.authors Hnatyk Bohdan I. Gnatyk Roman B. Huhnin Oleksandr Е. Mozhova Alona M. Fedorova Оlena V. popup.nrat_date 2024-07-02 Close