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题名: Search for the gamma-ray emission from M33 with the Fermi Large Area Telescope
作者: Fu, L.; Xia, Z. Q.; Shen, Z. Q.
刊名: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期: 2017
卷号: 471, 期号:2, 页码:1737-1742
英文摘要: We searched for the gamma-ray signal from M33, one of the largest galaxies in the Local Group, using the Pass8 data from the Fermi Large Area Telescope (LAT). No statistically significant gamma-ray emission has been detected in the direction of M33, and we report a new upper limit of the high-energy (>100 MeV) photon flux of 2.3 x 10(-9) ph cm(-2) s(-1), which is stricter than previous constraints and implies a cosmic ray density for M33 that is lower than that suggested previously. The current limit is still, however, in agreement with the correlation of star formation rate and gamma-ray luminosity inferred from the Local group galaxies and a few nearby starburst galaxies.
语种: 英语
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/17409
Appears in Collections:宇宙伽马暴、中子星及相关物理研究团组_期刊论文

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