Chin. Phys. Lett.  2017, Vol. 34 Issue (12): 129702    DOI: 10.1088/0256-307X/34/12/129702
An Explanation for the Undetection of Radio Pulsar in Supernova 1987A
Shuang-Qiang Wang1,2, Na Wang1**, De-Hua Wang3, Lun-Hua Shang3
1Xinjiang Astronomical Observatory, Chinese Academy of Sciences, Urumqi 830011
2University of Chinese Academy of Sciences, Beijing 100049
3School of Physics and Electronic Science, Guizhou Normal University, Guiyang 550001
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Shuang-Qiang Wang, Na Wang, De-Hua Wang et al  2017 Chin. Phys. Lett. 34 129702
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Abstract Supernova 1987A is a core collapse supernova in the Large Magellanic Cloud, inside which the product is most likely a neutron star. Despite the most sensitive available detection instruments from radio to $\gamma$-ray wavebands being exploited in the pass thirty years, there have not yet been any pulse signals detected. By considering the density of the medium plasma in the remnant of 1987A, we find that the plasma cut-off frequency is approximately 7 GHz, a value higher than the conventional observational waveband of radio pulsars. As derived, with the expansion of the supernova remnant, the radio signal will be detected in 2073 A.D. at 3 GHz.
Received: 11 October 2017      Published: 24 November 2017
PACS:  97.60.Gb (Pulsars)  
  97.60.Jd (Neutron stars)  
  98.35.Eg (Electric and magnetic fields)  
Fund: Supported by the National Basic Research Program of China under Grant No 2015CB857100, the National Key Research and Development Program of China under Grant No 2017YFA0402600, and the National Natural Science Foundation of China under Grant Nos 11173034, 11703003 and U1731238.
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Shuang-Qiang Wang
Na Wang
De-Hua Wang
Lun-Hua Shang
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