Please use this identifier to cite or link to this item: https://ir.swu.ac.th/jspui/handle/123456789/27514
ชื่อเรื่อง: The spectral energy distribution of an X-ray pair halo from a gamma-ray source with a power-law continuum
ผู้แต่ง: Eungwanichayapant A.
Luangtip W.
Keywords: Galaxies
Gamma rays
Tellurium compounds
Ultraviolet spectroscopy
Active galactic nuclei
Energy
Extragalactic background light
Gamma ray sources
High energy gamma rays
Infrared photons
Power indices
วันที่เผยแพร่: 2022
บทคัดย่อ: Interactions between Very High Energy (VHE) gamma-rays from Active Galactic Nuclei (AGNs) and infrared photons from the Extragalactic Background Light (EBL) can start electromagnetic cascades. If the extragalactic magnetic field near a host galaxy is strong enough (∼1 µG), the cascades would develop isotropically around the AGN. As a result, the electron/positron pairs created along the development of the cascades would create an X-ray halo via synchrotron radiation process. It is believed that the VHE gamma-ray spectra from the AGNs could be approximated by a power-law model which is truncated at high energy end (i.e. maximum energy). In this work we studied the X-ray Spectral Energy Distribution (SED) of the halo generated from the AGN spectra with different power indices and maximum energy levels. The results showed that the SEDs were slightly higher and broader, as they were obtaining higher flux if the power indices were lower. On the other hand, the SEDs were sensitive to the maximum energy levels between 100-300 TeV. More flux could be obtained from the higher maximum energy. However, we found that the SED becomes insensitive to the varied parameters when the maximum energy and the power index are > 500 TeV and < 1.5, respectively. © 2022 Institute of Physics Publishing. All rights reserved.
URI: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85123676467&doi=10.1088%2f1742-6596%2f2145%2f1%2f012013&partnerID=40&md5=917f6929577d82af16901bbbbb26a26d
https://ir.swu.ac.th/jspui/handle/123456789/27514
ISSN: 17426588
Appears in Collections:Scopus 2022

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