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Multiwavelength Observations of a New Redback Millisecond Pulsar Candidate: 3FGL J0954.8-3948
Li, Kwan-Lok1; Hou X(侯贤)2,3; Strader, Jay1; Takata, Jumpei4; Kong, Albert K. H.5; Chomiuk, Laura1; Swihart, Samuel J.1; Hui, Chung Yue6; Cheng, K. S.7
Source PublicationASTROPHYSICAL JOURNAL
2018-08-20
Volume863Issue:2Pages:9
DOI10.3847/1538-4357/aad243
Contribution Rank第2完成单位
Indexed BySCI
KeywordBinaries: Close Gamma Rays: Stars Pulsars: General X-rays: Binaries
Abstract

We present a multiwavelength study of the unassociated Fermi Large Area Telescope (LAT) source, 3FGL J0954.8-3948, which is likely the gamma-ray counterpart of a 9.3 hr binary in the field. With more than 9 years of Pass 8 LAT data, we updated the gamma-ray spectral properties and the LAT localization of the gamma-ray source. While the binary lies outside the cataloged 95% error ellipse, the optimized LAT ellipse is 0 degrees.1 closer and encloses the binary. The system is likely spectrally hard in X-rays (photon index Gamma(X) = 1.4(-1.0)(+1.2)) with orbital modulations detected in optical, ultraviolet, and possibly X-rays. A steep spectrum radio counterpart (spectral index alpha approximate to -1.6) is also found in the TIFR GMRT Sky Survey, implying that it is a pulsar system. We obtained a series of SOAR and Gemini spectroscopic observations in 2017/2018, which show a low-mass secondary orbiting in a close circular orbit with K-2 = 272 +/- 4 km s(-1) under strong irradiation by the primary compact object. All the observations as well as the modeling of the X/gamma-ray high-energy emission suggest that 3FGL J0954.8-3948 is a redback millisecond pulsar in a rotation-powered state.

Funding ProjectIstituto Nazionale di Astrofisica in Italy ; Centre National d'Etudes Spatiales in France ; National Natural Science Foundation of China[11503078] ; National Natural Science Foundation of China[11661161010] ; Packard Fellowship ; NSF[AST-1714825] ; NASA[80NSSC 17K0507] ; National Science Foundation of China (NSFC)[11661161010] ; National Science Foundation of China (NSFC)[11573010] ; National Science Foundation of China (NSFC)[U1631103] ; Ministry of Science and Technology of the Republic of China (Taiwan)[105-2119-M-007-028-MY3] ; National Research Foundation of Korea[2016R1A5A1013277] ; GRF[17302315] ; National Aeronautics and Space Administration through Chandra Award[G07-18036X] ; National Aeronautics Space Administration[NAS8-03060] ; Research in Astronomy, Inc.[GS-2017B-FT-15] ; National Aeronautics and Space Administration[NNGO5GF22G] ; U.S. National Science Foundation[AST-0909182] ; U.S. National Science Foundation[AST-1313422] ; DPAC
Funding OrganizationIstituto Nazionale di Astrofisica in Italy ; Centre National d'Etudes Spatiales in France ; National Natural Science Foundation of China[11503078,11661161010] ; Packard Fellowship ; NSF[AST-1714825] ; NASA[80NSSC 17K0507] ; National Science Foundation of China (NSFC)[11661161010, 11573010, U1631103] ; Ministry of Science and Technology of the Republic of China (Taiwan)[105-2119-M-007-028-MY3] ; National Research Foundation of Korea[2016R1A5A1013277] ; GRF[17302315] ; National Aeronautics and Space Administration through Chandra Award[G07-18036X] ; National Aeronautics Space Administration[NAS8-03060] ; Research in Astronomy, Inc.[GS-2017B-FT-15] ; National Aeronautics and Space Administration[NNGO5GF22G] ; U.S. National Science Foundation[AST-0909182,AST-1313422] ; DPAC
Language英语
Subject Area天文学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
WOS IDWOS:000442628400030
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordSpectral Properties ; Source Catalog ; Radio Pulsars ; Ray Binary ; Discovery ; Radiation ; Model ; Sky
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/17818
Collection高能天体物理研究组
中国科学院天体结构与演化重点实验室
Corresponding AuthorLi, Kwan-Lok
Affiliation1.Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824, USA
2.Yunnan Observatories, Chinese Academy of Sciences, Kunming, 650216, People's Republic of China
3.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming, 650216, People's Republic of China
4.School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
5.Institute of Astronomy, National Tsing Hua University, Hsinchu 30013, Taiwan
6.Department of Astronomy and Space Science, Chungnam National University, Daejeon 34134, Republic of Korea
7.Department of Physics, The University of Hong Kong, Pokfulam Road, Hong Kong
Recommended Citation
GB/T 7714
Li, Kwan-Lok,Hou X,Strader, Jay,et al. Multiwavelength Observations of a New Redback Millisecond Pulsar Candidate: 3FGL J0954.8-3948[J]. ASTROPHYSICAL JOURNAL,2018,863(2):9.
APA Li, Kwan-Lok.,Hou X.,Strader, Jay.,Takata, Jumpei.,Kong, Albert K. H..,...&Cheng, K. S..(2018).Multiwavelength Observations of a New Redback Millisecond Pulsar Candidate: 3FGL J0954.8-3948.ASTROPHYSICAL JOURNAL,863(2),9.
MLA Li, Kwan-Lok,et al."Multiwavelength Observations of a New Redback Millisecond Pulsar Candidate: 3FGL J0954.8-3948".ASTROPHYSICAL JOURNAL 863.2(2018):9.
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