论文标题
Nustar的Tev Blazar MRK 501
NuSTAR View of TeV Blazar Mrk 501
论文作者
论文摘要
我们报告了所有七个{\ IT核光谱望远镜阵列（nustar）} TEV $γ-$ ray发射Blazar Markarian（或MRK）501的观察结果的通量和光谱变异性研究的结果。我们在3-79 KEV X射线光策略（LCS）中发现了501年501年501年的off tev $γ-$ ray发射Blazar Markarian（或MRK）501。我们使用独立于模型的硬度比率分析检查了光谱变异性，并在两个观察结果中发现了一般的“越来越硬”行为。我们还研究了TEV Blazar MRK 501的3-79 keV X射线光谱的性质，并发现具有光子指数的曲面log-parabola模型在七个光谱中有五个（10 keV）（10 keV）$α\ sim $ 2.12-2.32和曲率$β\ sim $β\ sim $ 0.15--0.28。其他两个光谱由具有光子指数2.70和2.75的简单幂律模型更好地表示。我们简要讨论可用的物理模型来解释我们的结果。
We report the results of flux and spectral variability studies of all seven {\it Nuclear Spectroscopic Telescope Array (NuSTAR)} observations of TeV $γ-$ray emitting blazar Markarian (or Mrk) 501. We found strong evidence of intraday variability in 3-79 keV X-ray light curves (LCs) of Mrk 501 during four out of these seven observations. We examined spectral variability using a model-independent hardness-ratio analysis and found a general "harder-when-brighter" behaviour in two observations. We also investigated the nature of 3-79 keV X-ray spectra of TeV blazar Mrk 501 and found that five out of seven spectra are well described by the curved log-parabola models with photon indices (at 10 keV) $α\sim$ 2.12-2.32 and a curvature $β\sim$ 0.15-0.28. The two other spectra are somewhat better represented by simple power-law models with photon indices 2.70 and 2.75. We briefly discuss available physical models to explain our results.
