论文标题
在费米 - 拉特数据中，调查$γ$ ray光晕附近的三个HAWC明亮来源
Investigating $γ$-ray halos around three HAWC bright sources in Fermi-LAT data
论文作者
论文摘要
银河脉冲星周围的大量扩展源显示出从GEV到TEV能量的显着$γ$ - 射线发射，揭示了数百个通过反康普顿散射（ICS）散射从基础光子场中散射出来的TEV能量电子。 HAWC TEV TEV GAMMA射线观察到Pulsars Geminga和Monogem周围的几位延长发射以及Geminga周围的LAT GEV发射，这表明，超过100 kyr的系统具有多tev $ e^\ pm $，在SNR-PWN系统以外传播到SNR-PWN系统中。在HAWC在Energies E $> 100 $ 〜TEV中发现了几美元的$γ$ - 射线来源之后，我们研究了HAWC检测到的三个最亮的来源的Fermi-LAT数据中的扩展$γ$ ray排放，最高可达100 TEV。我们发现$θ_{68} = 1.00^{+0.05} _ { - 0.07} $ deg的扩展排放周围EHWC J1825-134和$θ_{68} = 0.71 \ pm0.10.10 $ deg EHWC EHWC J1907+063。在费米 - 拉特数据点上使用ICS模板分析的扩散系数值明显低于平均银河系。当研究与HAWC数据一起研究时，$γ$ ray-ray-lat数据提供了对非常高能量电子和正电子母体种群的宝贵见解。
Numerous extended sources around Galactic pulsars have shown significant $γ$-ray emission from GeV to TeV energies, revealing hundreds of TeV energy electrons scattering off of the underlying photon fields through inverse Compton scattering (ICS). HAWC TeV gamma-ray observations of few-degree extended emission around the pulsars Geminga and Monogem, and LAT GeV emission around Geminga, suggest that systems older than 100 kyr have multi-TeV $e^\pm$ propagating beyond the SNR-PWN system into the interstellar medium. Following the discovery of few $γ$-ray sources by HAWC at energies E$>100$~TeV, we investigate the presence of an extended $γ$-ray emission in Fermi-LAT data around the three brightest sources detected by HAWC up to 100 TeV. We find an extended emission of $θ_{68} = 1.00^{+0.05}_{-0.07}$ deg around eHWC J1825-134 and $θ_{68} = 0.71\pm0.10$ deg eHWC J1907+063. The analysis with ICS templates on Fermi-LAT data point to diffusion coefficient values which are significantly lower than the average Galactic one. When studied along with HAWC data, the $γ$-ray Fermi-LAT data provide invaluable insight into the very high-energy electron and positron parent populations.
