Identification of candidate millisecond pulsars from Fermi LAT observations II
Identification of candidate millisecond pulsars from Fermi LAT observations II
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DOI：
10.1088/1674-4527/17/7/72
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发表时间：
2017-04
影响因子：
1.8
通讯作者：
X. Dai;Zhongxiang Wang;J. Vadakkumthani;Y. Xing
中科院分区：
文献类型：
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作者：
X. Dai;Zhongxiang Wang;J. Vadakkumthani;Y. Xing
根据已知γ射线毫秒双星（MSP）的性质，我们从费米大天区望远镜（LAT）第三源表中选取了77个非关联源，以寻找可能的候选MSP。以前，报告了其中39个的详细LAT数据分析，在这里，我们报告了其余38个来源的分析。在这38个源中，有28个是具有干净背景的单点源，其光谱具有明显的曲率。我们还对28个来源中的24个来源的存档X射线数据进行了分析。在10个源的场中，至少有一个X射线天体，而在其他14个源的场中，没有探测到X射线天体，但这可能是由于X射线观测时间短。我们讨论了这些来源可能的MSP性质。其中6个（J0514.6-4406、J1035.7-6720、J1624.2-4041、J1744.1-7619、J1946.4-5403和J2039.6-5618）最有可能与类星体有关，因为它们是多波长的，包括对脉动的直接射电或γ射线探测。为了牢固地建立关联或验证其他来源的MSP性质，需要进行深X射线和/或光学观测。
On the basis of the properties of known γ-ray millisecond pulsars (MSPs), we have selected 77 un-associated sources from the Fermi Large Area Telescope (LAT) third source catalog for the purpose of finding likely candidate MSPs. Previously, detailed LAT data analysis for 39 of them was reported, and here we report the analysis for the remaining 38 sources. We identify that among the 38 sources, 28 of them are single point-like sources with clean background and their spectra show significant curvature. We also conduct an analysis of archival X-ray data available for 24 of the 28 sources. In the fields of 10 sources, there is at least one X-ray object, and in those of the other 14 sources, no X-ray object is detected but this is probably due to the X-ray observations being short. We discuss the possible MSP nature for these sources. Six of them (J0514.6–4406, J1035.7–6720, J1624.2–4041, J1744.1–7619, J1946.4–5403 and J2039.6–5618) are most likely associated with pulsars because of multi-wavelength identifications including direct radio or γ-ray detection of pulsations. To firmly establish the associations or verify the MSP nature for other sources, deep X-ray and/or optical observations are needed.