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Interpretation of no radio pulsar inside supernova 1987A: The high plasma cut-off frequency by the remnant media
Wang, S. Q.1,2; Shang, L. H.3,4; Wang, N.1; Zhang, C. M.2,5; Wang, D. H.6; Wang, J. B.1
2019-05-01
Source PublicationNEW ASTRONOMY
ISSN1384-1076
Volume69Pages:43-47
Contribution Rank1
AbstractThree decades have passed since the supernova SN 1987A was observed in the Large Magellanic Cloud, inside which the product is most likely a neutron star (NS) formed in the core collapse explosion.Although lots of observations with sensitive radio telescopes have taken place, astronomers have not yet detected any evidence for a radio pulsar around the remnant of 1987A. To investigate pulsars inside the SN remnants, we calculate the cut-off oscillation frequency of the plasma around the presumed NS inside SN1987A, as shown to be about 33 GHz at present (2018 CE), which is much higher than the favorite "searching window" (e.g. L-band similar to 1.4 GHz) of radio pulsar surveys that have been commonly exploited by astronomers. Since radio waves with frequencies lower than the plasma cut-off frequency cannot penetrate the SN remnant media, we suggest that astronomers use higher frequency bands to search for a pulsar in SN 1987A.Furthermore, with the expansion of SN remnant media, we find that the plasma cut-off frequency can decay to the L-band (1.4 GHz) in the future. The strategy of finding a pulsar of SN 1987A is that either the high frequency bands of radio telescopes, or the high energy detections at Gamma-ray and X-ray bands by space satellites are applied.
KeywordPulsar Neutron star Accretion
DOI10.1016/j.newast.2018.11.009
Indexed BySCI
Language英语
WOS KeywordEMISSION ALTITUDES ; EVOLUTION ; MODEL ; CORE
Funding ProjectNational Natural Science Foundation of China[U1731238] ; National Natural Science Foundation of China[11703003] ; National Key Research and Development Program of China[2016YFA0400804] ; National Basic Research Program of China grants 973 Programs[2015CB857104] ; National Natural Science Foundation of China[NAOC - Y834081V01] ; 201* Project of Xinjiang Uygur Autonomous Region of China for Flexibly Fetching in Upscale Talents
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000461264800005
PublisherELSEVIER SCIENCE BV
Citation statistics
Document Type期刊论文
Identifierhttp://ir.xao.ac.cn/handle/45760611-7/2534
Collection中国科学院新疆天文台
射电天文研究室
Corresponding AuthorWang, S. Q.
Affiliation1.Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Nanjing Univ Sci & Technol, Sch Elect & Opt Engn, Nanjing 210094, Jiangsu, Peoples R China
4.Qian Xuesen Lab Space Technol, 104 Youyi Rd, Beijing 100094, Peoples R China
5.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
6.Guizhou Normal Univ, Sch Phys & Elect Sci, Guiyang 550001, Guizhou, Peoples R China
First Author AffilicationXinjiang Astronomical Observatory, Chinese Academy of Sciences
Corresponding Author AffilicationXinjiang Astronomical Observatory, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Wang, S. Q.,Shang, L. H.,Wang, N.,et al. Interpretation of no radio pulsar inside supernova 1987A: The high plasma cut-off frequency by the remnant media[J]. NEW ASTRONOMY,2019,69:43-47.
APA Wang, S. Q.,Shang, L. H.,Wang, N.,Zhang, C. M.,Wang, D. H.,&Wang, J. B..(2019).Interpretation of no radio pulsar inside supernova 1987A: The high plasma cut-off frequency by the remnant media.NEW ASTRONOMY,69,43-47.
MLA Wang, S. Q.,et al."Interpretation of no radio pulsar inside supernova 1987A: The high plasma cut-off frequency by the remnant media".NEW ASTRONOMY 69(2019):43-47.
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