论文标题
从PWN KES 75和PSR J1846-0258发现GEV伽马射线排放
Discovery of GeV gamma-ray emission from PWN Kes 75 and PSR J1846-0258
论文作者
论文摘要
我们报告了PWN KES 75和PSR J1846-0258的伽马射线排放的检测。通过建模包含新的费米 - 拉特数据的光谱能分布，我们发现观察到的伽马射线发射可能是PWN和PULSAR磁层的组合。这种磁层发射的光谱形状与费米 - 拉特检测到的旋转动力脉冲星的伽马射线光谱相似，而我们最佳拟合模型的结果表明，脉冲星的磁层发射占当前自旋降低亮度的1％。先前的工作试图表征该系统的性质，并发现超新星爆炸能量低和低Sn射流质量。我们重新分析了结合新费米排放的宽带排放，并将结果的含义与先前的报告进行了比较。最佳拟合伽马射线发射模型表明，第二个非常热的光子场可能是由嵌入星云中的狼射线星的恒星风产生的，它支持了先前报告中祖先发现的低喷射质量，在这里，在二进制质量传递的情况下。
We report the detection of gamma-ray emission from PWN Kes 75 and PSR J1846-0258. Through modeling the spectral energy distribution incorporating the new Fermi-LAT data, we find the the observed gamma-ray emission is likely a combination of both the PWN and pulsar magnetosphere. The spectral shape of this magnetospheric emission is similar to the gamma-ray spectrum of rotation powered pulsars detected by Fermi-LAT and the results from our best-fit model suggest the pulsar's magnetospheric emission accounts for 1% of the current spin-down luminosity. Prior works attempted to characterize the properties of this system and found a low supernova explosion energy and low SN ejecta mass. We re-analyze the broadband emission incorporating the new Fermi emission and compare the implications of our results to prior reports. The best-fit gamma-ray emission model suggests a second very hot photon field possibly generated by the stellar wind of a Wolf-Rayet star embedded within the nebula, which supports the low ejecta mass found for the progenitor in prior reports and here in the scenario of binary mass transfer.
