NAOC Open IR
A possible blazar spectral irregularity case caused by photon-axionlike-particle oscillations
Zhou, Jianeng1; Wang, Zhongxiang1,2; Huang, Feng3; Chen, Liang1
2021-08-01
Source PublicationJOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
ISSN1475-7516
Issue8Pages:13
AbstractWe report detection of a line-like feature in the gamma-ray spectrum of the blazar B0516-621, for which the data obtained with the Large Area Telescope onboard Fermi Gamma-Ray Space Telescope (Fermi) are analyzed. The feature is at similar to 7 GeV and different analyses are conducted to check its real presence. We determine that it has a significance of 2.5-3.0 sigma, and cautiously note the presence of possible systematics in the data which could reduce the significance. This putative feature is too narrow to be explained with radiation processes generally considered for jet emission of blazars. Instead, it could be a signal due to the oscillations between photons and axion-like particles (ALPs) in the source's jet. We investigate this possibility by fitting the spectrum with the photon-ALP oscillation model, and find that the parameter space of ALP mass m(a) <= 10(-8) eV and the coupling constant (between photons and ALPs) g(a gamma) =1.16-1.48x10(-10) GeV-1 can provide a fit to the line-like feature, while the magnetic field at the emission site of gamma-rays is fixed at 0.7 G. The ranges for m(a) and g(a gamma) are in tension with those previously obtained from several experiments or methods, but on the other hand in line with some of the others. This spectral-feature case and its possible indication for ALP existence could be checked from similar studies of other blazar systems and also suggest a direction of effort for building future high-energy facilities that would have high sensitivities and spectral resolutions for searching for similar features.
Keywordactive galactic nuclei axions
Funding OrganizationNational Program on Key Research and Development Project ; National Program on Key Research and Development Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Original Innovation Program of the Chinese Academy of Sciences ; Original Innovation Program of the Chinese Academy of Sciences ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Original Innovation Program of the Chinese Academy of Sciences ; Original Innovation Program of the Chinese Academy of Sciences ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Original Innovation Program of the Chinese Academy of Sciences ; Original Innovation Program of the Chinese Academy of Sciences ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Original Innovation Program of the Chinese Academy of Sciences ; Original Innovation Program of the Chinese Academy of Sciences
DOI10.1088/1475-7516/2021/08/007
Language英语
Funding ProjectNational Program on Key Research and Development Project[2016YFA0400804] ; National Natural Science Foundation of China[11633007] ; National Natural Science Foundation of China[11890692] ; National Natural Science Foundation of China[U1931114] ; National Natural Science Foundation of China[U1531130] ; National Natural Science Foundation of China[U1831138] ; Original Innovation Program of the Chinese Academy of Sciences[E085021002]
Funding OrganizationNational Program on Key Research and Development Project ; National Program on Key Research and Development Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Original Innovation Program of the Chinese Academy of Sciences ; Original Innovation Program of the Chinese Academy of Sciences ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Original Innovation Program of the Chinese Academy of Sciences ; Original Innovation Program of the Chinese Academy of Sciences ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Original Innovation Program of the Chinese Academy of Sciences ; Original Innovation Program of the Chinese Academy of Sciences ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Original Innovation Program of the Chinese Academy of Sciences ; Original Innovation Program of the Chinese Academy of Sciences
WOS Research AreaAstronomy & Astrophysics ; Physics
WOS SubjectAstronomy & Astrophysics ; Physics, Particles & Fields
WOS IDWOS:000683047800007
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/76084
Collection中国科学院国家天文台
Corresponding AuthorZhou, Jianeng
Affiliation1.Chinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China
2.Yunnan Univ, Key Lab Astroparticle Phys Yunnan Prov, Sch Phys & Astron, Dept Astron, Kunming 650091, Yunnan, Peoples R China
3.Xiamen Univ, Dept Astron, Zengcuoan West Rd, Xiamen 361005, Peoples R China
Recommended Citation
GB/T 7714
Zhou, Jianeng,Wang, Zhongxiang,Huang, Feng,et al. A possible blazar spectral irregularity case caused by photon-axionlike-particle oscillations[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2021(8):13.
APA Zhou, Jianeng,Wang, Zhongxiang,Huang, Feng,&Chen, Liang.(2021).A possible blazar spectral irregularity case caused by photon-axionlike-particle oscillations.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(8),13.
MLA Zhou, Jianeng,et al."A possible blazar spectral irregularity case caused by photon-axionlike-particle oscillations".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .8(2021):13.
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