Finding More & More Gamma-ray Pulsars with the Fermi LAT

中国科学院云南天文台学术报告通知

2024年第29

报告题目Finding More & More Gamma-ray Pulsars with the Fermi LAT

报告人Dr. David A. Smith

报告人单位 法国国家科研中心(French National Center for Scientific Research (CNRS)),波尔多天文台

报告语言English

报告时间202412914:30-16:00

报告地点7号楼2楼阶梯会议室

报告摘要

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Over 300 pulsars are seen to pulse in GeV gamma rays acquired with the Large Area Telescope (LAT) on the Fermi satellite. Many more may be waiting for discovery: of the >2000 LAT sources with no counterpart known at other wavelengths, hundreds are non-variable, with pulsar-like spectral shapes and sky distributions. In addition, population syntheses typically predict as much as twice the current LAT pulsar sample. However, detecting gamma-ray pulsations will be difficult for most of the new ones, whether through blind searches of the gamma-ray data, or using long-term phase-connected rotation ephemerides for radio pulsars. I will describe the sample of gamma-ray pulsars in the 3rd LAT Pulsar Catalog, and the ongoing work to transform candidates into discoveries. I will focus on the opportunities that FAST provides to identify the radio-faint, gamma-loud pulsars hidden in the LAT data, highlighting some of the science that further discoveries enable.

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报告人简介:

David A. Smith博士,法国国家科研中心研究员,Fermi-LAT伽马射线卫星欧洲发言人。1988年,他因在费米实验室质子-反质子对撞机上进行的CDF实验而获得伊利诺伊大学香槟分校的博士学位,该实验为发现顶夸克做出了贡献。David1991年转向伽马射线天体物理,1995年加入法国国家科研中心至今。他领导的波尔多Fermi-LAT合作组发现了大量伽马射线脉冲星,并组织了一个国际联盟,利用世界各地的射电望远镜对脉冲星进行计时观测,包括中国的FAST望远镜。他的主要研究兴趣是伽马射线脉冲星。自2023年底以来,他开始研究尚无其他波段对应体的约2000Fermi-LAT源的性质,探讨大质量恒星形成区 (SFR) 作为伽马射线辐射源的可能性。


云台邀请团组:星系类星体研究团组

邀请方联系人:侯贤



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