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Searching for spectral oscillations due to photon-axionlike particle conversion using the Fermi-LAT observations of bright supernova remnants
Xia, Zi-Qing1,2; Zhang, Cun1,3; Liang, Yun-Feng1; Feng, Lei1; Yuan, Qiang1,2; Fan, Yi-Zhong1,2; Wu, Jian1,2
2018-03-07
Source PublicationPHYSICAL REVIEW D
ISSN2470-0010
Volume97Issue:6Pages:8
Abstract

Axionlike particles (ALPs) are one promising type of dark matter candidate particle that may generate detectable effects on gamma-ray spectra other than the canonical weakly interacting massive particles. In this work we search for such oscillation effects in the spectra of supernova remnants caused by the photon-ALP conversion, using the Fermi Large Area Telescope data. Three bright supernova remnants, IC443, W44, and W51C, are analyzed. The inclusion of photon-ALP oscillations yields an improved fit to the gamma-ray spectrum of IC443, which gives a statistical significance of 4.2 sigma in favor of such spectral oscillation. However, the best-fit parameters of ALPs (m(a) = 6.6 neV, g(a gamma) = 13.4 x 10(-11) GeV-1) are in tension with the upper bound (g(a gamma) < 6.6 x 10(-11) GeV-1) set by the CAST experiment. It is difficult to explain the results using the systematic uncertainties of the flux measurements. We speculate that the "irregularity" displayed in the spectrum of IC443 may be due to the superposition of the emission from different parts of the remnant.

DOI10.1103/PhysRevD.97.063003
WOS KeywordMODELS ; MASS
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics ; Physics
WOS SubjectAstronomy & Astrophysics ; Physics, Particles & Fields
WOS IDWOS:000426781100001
PublisherAMER PHYSICAL SOC
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/22380
Collection中国科学院紫金山天文台
Corresponding AuthorLiang, Yun-Feng; Feng, Lei; Yuan, Qiang; Fan, Yi-Zhong
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210008, Jiangsu, Peoples R China
2.Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Anhui, Peoples R China
3.Nanjing Univ, Sch Phys, Nanjing 210092, Jiangsu, Peoples R China
Recommended Citation
GB/T 7714
Xia, Zi-Qing,Zhang, Cun,Liang, Yun-Feng,et al. Searching for spectral oscillations due to photon-axionlike particle conversion using the Fermi-LAT observations of bright supernova remnants[J]. PHYSICAL REVIEW D,2018,97(6):8.
APA Xia, Zi-Qing.,Zhang, Cun.,Liang, Yun-Feng.,Feng, Lei.,Yuan, Qiang.,...&Wu, Jian.(2018).Searching for spectral oscillations due to photon-axionlike particle conversion using the Fermi-LAT observations of bright supernova remnants.PHYSICAL REVIEW D,97(6),8.
MLA Xia, Zi-Qing,et al."Searching for spectral oscillations due to photon-axionlike particle conversion using the Fermi-LAT observations of bright supernova remnants".PHYSICAL REVIEW D 97.6(2018):8.
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