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Identification of candidate millisecond pulsars from Fermi LAT observations
Dai XueJie1; Wang ZhongXiang1; Vadakkumthani Jithesh1; Xing Yi1
2016
Source PublicationRESEARCH IN ASTRONOMY AND ASTROPHYSICS
ISSN1674-4527
Volume16Issue:6
AbstractWe report our detailed data analysis of 39 gamma-ray sources selected from the 992 unassociated sources in the third Fermi Large Area Telescope Third Source Catalog. The selection criteria, which were set for finding candidate millisecond pulsars (MSPs), are non-variables with curved spectra and >5 degrees Galactic latitudes. From our analysis, 24 sources were found to be point-like sources not contaminated by background or nearby unknown sources. Three of them, J1544.6-1125, J1625.1-0021 and J1653.6-0158, have been previously studied, indicating that they are likely MSPs. The spectra of J0318.1+0252 and J2053.9+2922 do not have properties similar to known gamma-ray MSPs, and we thus suggest that they are not MSPs. Analysis of archival X-ray data for most of the 24 sources was also conducted. Four sources were found with X-ray objects in their error circles, and 16 with no detection. The ratios between the gamma-ray fluxes and X-ray fluxes or flux upper limits are generally lower than those of known gamma-ray MSPs, suggesting that if the gamma-ray sources are MSPs, none of the X-ray objects are their counterparts. Deep X-ray or radio observations of these sources are needed in order to identify their MSP nature.
KeywordLARGE-AREA TELESCOPE ECLIPSING BINARY SOURCE CATALOG RADIO PULSARS X-RAY STATE stars: pulsars stars: binaries gamma rays: stars
Language英语
Funding Project[National Natural Science Foundation of China] ; [Strategic Priority Research Program "The Emergence of Cosmological Structures" of the Chinese Academy of Sciences] ; [CAS/SAFEA International Partnership Program for Creative Research Teams] ; [Chinese Academy of Sciences President's International Fellowship Initiative (CAS PIFI)] ; [Shanghai Natural Science Foundation for Youth] ; [National Natural Science Foundation of China for Youth]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/61330
Collection中国科学院国家天文台
Affiliation1.中国科学院国家天文台
2.中国科学院大学
First Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Dai XueJie,Wang ZhongXiang,Vadakkumthani Jithesh,et al. Identification of candidate millisecond pulsars from Fermi LAT observations[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2016,16(6).
APA Dai XueJie,Wang ZhongXiang,Vadakkumthani Jithesh,&Xing Yi.(2016).Identification of candidate millisecond pulsars from Fermi LAT observations.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,16(6).
MLA Dai XueJie,et al."Identification of candidate millisecond pulsars from Fermi LAT observations".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 16.6(2016).
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