Interpreting correlated observations of cosmic rays and gamma-rays from Centaurus A with a proton blazar inspired model.
In: Monthly Notices of the Royal Astronomical Society, Jg. 500 (2021), Heft 1, S. 1087-1094
Online
academicJournal
Zugriff:
The nearest active radio galaxy Centaurus (Cen) A is a gamma-ray emitter in GeV–TeV energy scale. The high energy stereoscopic system (HESS) and non-simultaneous Fermi –Large Area Telescope observation indicate an unusual spectral hardening above few GeV energies in the gamma-ray spectrum of Cen A. Very recently the HESS observatory resolved the kilo parsec (kpc)-scale jets in Centaurus A at TeV energies. On the other hand, the Pierre Auger Observatory (PAO) detects a few ultrahigh energy cosmic ray (UHECR) events from Cen-A. The proton blazar inspired model, which considers acceleration of both electrons and hadronic cosmic rays in active galactic nuclei (AGN) jet, can explain the observed coincident high-energy neutrinos and gamma-rays from Ice-cube detected AGN jets. Here, we have employed the proton blazar inspired model to explain the observed GeV–TeV gamma-ray spectrum features including the spectrum hardening at GeV energies along with the PAO observation on cosmic rays from Cen-A. Our findings suggest that the model can explain consistently the observed electromagnetic spectrum in combination with the appropriate number of UHECRs from Cen A. [ABSTRACT FROM AUTHOR]
Titel: |
Interpreting correlated observations of cosmic rays and gamma-rays from Centaurus A with a proton blazar inspired model.
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Autor/in / Beteiligte Person: | Banik, Prabir ; Bhadra, Arunava ; Bhattacharyya, Abhijit |
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Zeitschrift: | Monthly Notices of the Royal Astronomical Society, Jg. 500 (2021), Heft 1, S. 1087-1094 |
Veröffentlichung: | 2021 |
Medientyp: | academicJournal |
ISSN: | 0035-8711 (print) |
DOI: | 10.1093/mnras/staa3343 |
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