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Information × Registration Number 0222U001072, 0119U101587 , R & D reports Title Reserch on X-ray and gamma ray emission sources and prospects for their observation in the CTA project. popup.stage_title Head Kravchuk Serhii H., Кандидат фізико-математичних наук Registration Date 23-01-2022 Organization Department for special training National academy of science of Ukraine at Kiev University popup.description2  Simulation of non-thermal hadron and neutron radiation from SG A2151 (the main part of SG Hercules) was performed and estimates of prospects for the study of this object in current and future (ermi-LAT, LHASSO, IceCube, CTA, IceCube-Gen2) ground and orbit telescopes. A physical model based on which the neutrino radiation of SG A1656 and AGN, which are part of it, was calculated. The neutrino flux was calculated for the model that takes into account the contribution of AGN with more rigid spectra γp = 1.4−1. It is shown that the IceCube experiment will be able to register the probable signal from SG A1656 for the case of the hard spectrum γp <1.8 and the parameter Xcr, p = 0.05. X-rays from some of the brightest galaxies in the clusters, Mrk 501, NGC 1316, and NGC 1399, were analyzed. The SMBH masses were estimated by two different methods: by the dispersion of the stellar component (2.1 * 108 Msun and 10.4 * 108 Msun for NGC 1316 and NGC 1399, respectively) and by the JAM code (1.2 * 108 Msun and 5 * 108 Msun NGC 1316 and NGC 1399, respectively). ). The X-ray spectrum of Mrk 501 was fitted using two spectral models: the power continuum taking into account the absorption by neutral matter, and the two-knee power continuum with refraction, also taking into account the absorption. The results of the approximation confirm that Mrk 501, being a high-frequency HBF blazar, showed the spectral behavior typical of such AGNs: at radio wavelengths the “lower knee” of synchrotron radiation is visible, and in the X-ray range the “plateau” and “upper-knee”, So as a result, we see three different exponents that correspond to these three segments. Product Description popup.authors Hnatyk Bohdan I. Hnatyk Roman В. Kravchuk Serhii G. Fedorova Olena V. popup.nrat_date 2022-03-09 Close