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- W4311647361 abstract "Markarian (Mrk) 180 is a BL Lacertae (BL Lac) object located at a redshift of 0.045 and a potential candidate for high-energy cosmic ray acceleration. We have analyzed the Fermi Large Area Telescope (textit{Fermi}-LAT) $gamma$-ray data of Mrk 180 collected over a period of 12.8 years and found no significant enhancement in the flux from the long-term $gamma$-ray light curve. We have also analyzed Swift X-ray, ultraviolet & optical, and X-ray Multi-Mirror Mission (XMM-Newton) data to construct the multi-wavelength spectral energy distribution (SED). The SED has been modeled with one-zone pure leptonic and lepto-hadronic scenarios to find the best fit to the multi-wavelength data and explain the underlying physics of multi-wavelength emission. The pure leptonic model and the two lepto-hadronic models involving line-of-sight interactions of ultrahigh-energy cosmic rays (UHECR; $Egtrsim0.1$ EeV) with the cosmic radiation backgrounds and the interactions of relativistic protons with the cold protons in the jet have been compared in our work to explain the observational data points. Moreover, an earlier study has associated Mrk 180 with the Telescope Array (TA) hotspot of UHECRs at $E>57$ EeV. This speculation motivates us to check whether ultrahigh energy protons and iron nuclei can reach the earth from Mrk 180. We find that Mrk 180 is unlikely to be a source of the UHECR events contributing to the TA hotspot for conservative strengths of extragalactic magnetic fields." @default.
- W4311647361 created "2022-12-27" @default.
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- W4311647361 date "2022-12-14" @default.
- W4311647361 modified "2023-10-06" @default.
- W4311647361 title "Exploring the Emission Mechanisms of Mrk 180 with long term X-ray and $gamma$-ray data" @default.
- W4311647361 doi "https://doi.org/10.48550/arxiv.2212.07331" @default.
- W4311647361 hasPublicationYear "2022" @default.
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