RAPID GAMMA-RAY FLUX VARIABILITY DURING THE 2013 MARCH CRAB NEBULA FLARE
RAPID GAMMA-RAY FLUX VARIABILITY DURING THE 2013 MARCH CRAB NEBULA FLARE
复制标题
2013 年 3 月蟹状星云耀斑期间伽马射线通量的快速变化
DOI：
10.1088/2041-8205/775/2/l37
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
R. Ojha
中科院分区：
文献类型：
--
作者：
M. Mayer;R. Buehler;E. Hays;C. C. Cheung;M. Dutka;J. Grove;M. Kerr;R. Ojha;R. Ojha
我们报告了一个明亮的耀斑在蟹状星云检测到的大面积望远镜（LAT）上的费米伽马射线太空望远镜。亮度显著增加的时期发生在2013年3月，持续了大约两周。在此期间，我们观测到了大约5小时时间尺度的通量变化。脉冲星及其星云的100 MeV以上的组合光子通量在2013年3月6日达到峰值（12.5 ± 0.8）· 10−6 cm−2 s−1。这个数值超过平均通量几乎6倍，意味着仅星云的同步加速器部分的通量就高出20倍。这是从这个来源观察到的第二个最亮的耀斑。在爆发期间收集的LAT数据的光谱和时间分析揭示了蟹状星云的快速变化的同步加速器组件，而脉冲星发射保持恒定的时间。
We report on a bright flare in the Crab Nebula detected by the Large Area Telescope (LAT) on board the Fermi Gamma-ray Space Telescope. The period of significantly increased luminosity occurred in 2013 March and lasted for approximately two weeks. During this period, we observed flux variability on timescales of approximately 5 hr. The combined photon flux above 100 MeV from the pulsar and its nebula reached a peak value of (12.5 ± 0.8) · 10−6 cm−2 s−1 on 2013 March 6. This value exceeds the average flux by almost a factor of six and implies a ∼20 times higher flux for the synchrotron component of the nebula alone. This is the second brightest flare observed from this source. Spectral and temporal analysis of the LAT data collected during the outburst reveal a rapidly varying synchrotron component of the Crab Nebula while the pulsar emission remains constant in time.
影响因子：
4.8
作者：
S. Komissarov
通讯作者：
S. Komissarov