论文标题
探索具有长期X射线和$γ$ ray数据的MRK 180的排放机制
Exploring the Emission Mechanisms of Mrk 180 with long term X-ray and $γ$-ray data
论文作者
论文摘要
Markarian（MRK）180是位于0.045的红移和高能宇宙射线加速度的潜在候选者的Bl lacertae（Bl Lac）对象。我们已经分析了费米大面积望远镜（\ textit {fermi} -lat）$γ$ - 在12。8年内收集的MRK 180的数据，并且发现长期$γ$ - 雷射线光线曲线的通量没有显着增强。我们还分析了Swift X射线，Ultraviolet \＆Optical和X射线多MIRROR任务（XMM-Newton）数据，以构建多波长光谱能量分布（SED）。 SED已通过单区纯净性松弛和鳞茎 - 狂热场景进行建模，以解释多波长发射的潜在物理。纯净的模型和两个lepto-hadronic模型，即（i）超高能量宇宙射线的视线相互作用（UHECR; $ e \ gtrsim 10^{17} $ eV）与宇宙背景辐射的宇宙辐射以及（ii）与冷蛋白相比的相互作用，与冷蛋白的相互作用进行了比较。此外，一项较早的研究已将MRK 180与UHECRS的望远镜阵列（TA）热点相关联。这种猜测促使我们检查超高的能量质子和铁核是否可以从MRK 180到达地球。将模拟的结果与当前的观察数据进行了比较后，我们发现MRK 180不太可能成为UHECR事件的来源，而UHECR事件有助于导致TA TA Hotspot Hotspot Hotspot for for Perfactic磁场的保守强度。
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) $γ$-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 $γ$-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 explain the underlying physics of multi-wavelength emission. The pure leptonic model and the two lepto-hadronic models, viz., (i) line-of-sight interactions of ultrahigh-energy cosmic rays (UHECR; $E\gtrsim 10^{17}$ eV) with the cosmic background radiation and (ii) the interactions of relativistic protons with the cold protons in the jet, have been compared in our work. 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. After comparing the results of our simulation with the current observational data, 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.
