Searching for gamma-ray pulsars among Fermi unassociated sources: 2FGLJ1906.5+0720

	Searching for gamma-ray pulsars among Fermi unassociated sources: 2FGLJ1906.5+0720
	Xing, Yi; Wang, Zhongxiang
刊名	PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
	2014-08-01
卷号	66 期号:4 页码:1
关键词	gamma rays: stars pulsars: general pulsars: individual (PSR J1907+0602)
英文摘要	We report the results from our analysis of the Fermi Large Area Telescope data for the Fermi unassociated source 2FGL J1906.5+0720, which is a high-ranked candidate pulsar. In order to better study our target, we first update the ephemeris for PSR J1907+0602, which is used to help remove any possible contamination due to strong emission from this nearby pulsar. From our analysis, 2FGL J1906.5+0720 is confirmed to have a significant low-energy cut-off at similar to 1GeV in its emission (14 sigma-18 sigma significance), consistent with those seen in young pulsars. We search for pulsations but no spin frequency signals are found in a frequency range of 0.5-32 Hz. No single model can fully describe the source's overall Fermi gamma-ray spectrum, and the reason for this is the excess emission detected at energies of >= 4GeV. The high-energy component possibly indicates emission from a pulsar wind nebula, when considering 2FGL J1906.5+0720 as a young pulsar. We conclude that 2FGL J1906.5+0720 is likely a pulsar based on the emission properties we have obtained, and observations at other energies are needed in order to confirm its pulsar nature.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	LARGE-AREA TELESCOPE ; TIMING PACKAGE ; WIND NEBULAE ; CATALOG ; TEMPO2 ; MODEL
收录类别	SCI
语种	英语
WOS记录号	WOS:000342233900007
内容类型	期刊论文
源URL	[http://119.78.226.72/handle/331011/18191]
专题	上海天文台_星系宇宙学重点实验室
作者单位	Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China
推荐引用方式 GB/T 7714	Xing, Yi,Wang, Zhongxiang. Searching for gamma-ray pulsars among Fermi unassociated sources: 2FGLJ1906.5+0720[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2014,66(4):1.
APA	Xing, Yi,&Wang, Zhongxiang.(2014).Searching for gamma-ray pulsars among Fermi unassociated sources: 2FGLJ1906.5+0720.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,66(4),1.
MLA	Xing, Yi,et al."Searching for gamma-ray pulsars among Fermi unassociated sources: 2FGLJ1906.5+0720".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 66.4(2014):1.