论文标题
使用费米大区域望远镜的伽马射线发射脉冲星云的追求
The Pursuit for Gamma-ray Emitting Pulsar Wind Nebulae with the Fermi-Large Area Telescope
论文作者
论文摘要
从无线电波长到TEV伽玛射线，至少有125个银河脉冲星云（PWNE），其中大多数是在无线电或X射线调查中首次识别的。 TEV频段中越来越多的质量是赫斯，魔术和veritas等地面的空气Cherenkov望远镜，因此它们构成了银河系发射器的主要来源类别。将可用的MEV-GEV数据与在TEV频带中的观察结果组合对于从相对论粒子种群中的高能发射的精确表征至关重要，从而揭示了产生大量占检测到的银河cr磁通量的大部分的能力。但是，即使在对整个天空进行了12年的持续观察之后，MEV-GEV PWN对应物仍然在很大程度上缺乏。目前，梅维·盖特（Mev-Gev）频段中的费米·拉特（Fermi-lat）确定了少于十二个闪烁岩。大多数适中的石沿着嵌入突出的弥漫性银河伽马射线发射的银河系平面，这使得这些源难以从明亮的扩散背景中解散。我们使用11。5年的Fermi-LAT数据向300mev-2TEV Energe Band中的已知pwne进行了系统的搜索，以对伽马射线对应。在本搜索的第一部分中，我们以先前在电磁频谱上鉴定出的怪胎位置为目标，这些怪异的位置是由费米 - 拉特先前检测到的脉冲星驱动为脉冲γ射线信号的，其中包括6个费米PWNE和7个Fermi PWN关联。我们报告了对58个兴趣区域的分析，并提供了所有公司和暂定检测以及它们的形态和光谱特征。我们将11个身份不明的伽玛射线来源归类为PWN公司，这使Fermi-Lat检测到的PWN人群增加了一倍，还有22个伽马射线来源是PWN候选者。
There are at least 125 Galactic pulsar wind nebulae (PWNe) that have been discovered from radio wavelengths to TeV gamma-rays, the majority of which were first identified in radio or X-ray surveys. An increasing number of PWNe are being identified in the TeV band by ground-based air Cherenkov Telescopes such as HESS, MAGIC, and VERITAS such that they constitute the dominant source class of Galactic TeV emitters. Combining available MeV-GeV data with observations in the TeV band is critical for precise characterization of high-energy emission from the relativistic particle population in PWNe, thus revealing the capability to produce a significant fraction of the detected Galactic CR flux. However, MeV-GeV PWN counterparts are still largely lacking even after 12 years of continuous observation of the entire sky. Less than a dozen PWNe are currently identified by the Fermi-LAT in the MeV-GeV band. Most PWNe are located along the Galactic plane embedded within the prominent, diffuse Galactic gamma-ray emission, which makes these sources difficult to disentangle from the bright diffuse background. We present a systematic search for gamma-ray counterparts to known PWNe in the 300MeV - 2TeV energy band using 11.5 years of Fermi-LAT data. For the first part of this search, we target the locations of PWNe previously identified across the electromagnetic spectrum that are not powered by pulsars previously detected by the Fermi-LAT as pulsating gamma-ray signals, which includes 6 Fermi PWNe and 7 Fermi PWN associations. We report the analysis of 58 total regions of interest and provide all firm and tentative detections along with their morphological and spectral characteristics. There are 11 unidentified gamma-ray sources that we classify as firm PWN counterparts, which doubles the PWN population detected by the Fermi-LAT, and 22 gamma-ray sources that are PWN candidates.
