论文标题
Fermi-Lat和HAWC观察的SS 433/W50的GEV-TEV对应物
GeV-TeV Counterparts of SS 433/W50 from Fermi-LAT and HAWC Observations
论文作者
论文摘要
HAWC的光学，无线电，X射线，X射线射线（VHE）$γ$ -rays已在光学，无线电，X射线射线和最近的高QuaSar SS 433中进行了扩展的喷射。在100 MEV--300 GEV频段中，在Fermi-Lat数据中，搜索高能量$γ$ -Ray的hawc $γ$ rays tev驱动了25 tev的能量。在本文中，我们报告了Fermi-LAT和HAWC观察的首次联合分析，以研究SS 〜433的$γ$ -Ray排放的频谱和位置。我们的分析发现，ss 433的东部和西部叶内GEV到-TEV $γ$ - 砂的常见发射点。超过1 GEV的总通量为$ \ sim 1 \ sim 1 \ times10^{ - 10} \，\ rm cm cm cm^{ - 2} { - 2} \，s^{ - ，s^{ - 1} $。东叶的$γ$ - 射线光谱与电子种群的逆抗孔量一致，该电子种群加速了喷气机。为了解释GEV和TEV通量，电子需要具有柔软的内在能谱，或者由于磁化环境中的同步辐射而进行快速冷却过程。
The extended jets of the microquasar SS 433 have been observed in optical, radio, X-ray, and recently very-high-energy (VHE) $γ$-rays by HAWC. The detection of HAWC $γ$-rays with energies as great as 25 TeV motivates searches for high-energy $γ$-ray counterparts in the Fermi-LAT data in the 100 MeV--300 GeV band. In this paper, we report on the first-ever joint analysis of Fermi-LAT and HAWC observations to study the spectrum and location of $γ$-ray emission from SS~433. Our analysis finds common emission sites of GeV-to-TeV $γ$-rays inside the eastern and western lobes of SS 433. The total flux above 1 GeV is $\sim 1\times10^{-10}\,\rm cm^{-2}\,s^{-1}$ in both lobes. The $γ$-ray spectrum in the eastern lobe is consistent with inverse-Compton emission by an electron population that is accelerated by jets. To explain both the GeV and TeV flux, the electrons need to have a soft intrinsic energy spectrum, or undergo a quick cooling process due to synchrotron radiation in a magnetized environment.
