标题： VERITAS对Geminga脉冲星和缺失链路双脉冲星PSR J1023+0038的最新观测结果 显示英文标题

标题： Recent pulsar results from VERITAS on Geminga and the missing link binary pulsar PSR J1023+0038

摘要： 近年来，费米-伽马射线太空望远镜（Fermi-LAT）已经探测到超过160个γ射线脉冲星，这使得人们能够详细研究能量高于100 MeV的脉冲星电磁辐射。 此外，由于MAGIC和VERITAS合作组意外地在超高能（VHE；E > 100 GeV）γ射线中检测到了蟹状星云脉冲星（Crab pulsar），天文学界一直在努力寻找新的超高能带中的脉冲星。 然而，迄今为止，蟹状星云脉冲星仍然是唯一一个在超高能γ射线中被探测到的脉冲星，这引发了关于它是否独特的疑问，并且也使得试图解释这种发射的模型预测更难以约束。 这里介绍了最近VERITAS合作组对最亮的北半球高能γ射线脉冲星Geminga以及缺失链二元脉冲星PSR J1023+0038的观测结果，这两项观测都得到了可能存在的超高能通量的上限值。 这些限制与目前试图解释脉冲星γ射线发射起源的理论框架进行了对比。 此外，还将简要讨论VERITAS未来对脉冲星的观测计划。 显示英文摘要

摘要： In recent years, the Fermi-LAT gamma-ray telescope has detected a population of over 160 gamma-ray pulsars, which has enabled the detailed study of electromagnetic radiation from pulsars at energies above 100 MeV. Further, since the surprising detection of the Crab pulsar in very high-energy (VHE; E > 100 GeV) gamma rays by the MAGIC and VERITAS collaborations, there has been an ongoing effort in the astrophysics community to detect new pulsars in the VHE band. However, the Crab remains the only pulsar so far detected in VHE gamma rays, raising the question of whether or not the Crab is unique and also making it more difficult to constrain model predictions that attempt to explain the emission. Presented here are recent VERITAS results from observational campaigns on the brightest northern-hemisphere high-energy gamma-ray pulsar Geminga and the missing link binary pulsar PSR J1023+0038, which have both resulted in upper limits on a possible VHE flux. These limits are placed into context with the current theoretical framework attempting to explain the origin of the gamma-ray emission from pulsars. Additionally, future plans for pulsar observations with VERITAS are be briefly discussed.