Size of the hard X-ray source in the Crab Nebula |
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| Authors: | Y Fukada S Hayakawa I Kasahara F Makino Y Tanaka H Akiyama M Matsuoka J Nishimura M Oda M Nakagawa H Sakurai V S Iyenger P K Kunte R K Manchanda B V Sreekantan |
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| Institution: | (1) Department of Physics, Nagoya University, Nagoya, Japan;(2) Institute of Space and Aeronautical Science, University of Tokyo, Japan;(3) Department of Physics, Osaka City University, Osaka, Japan;(4) Tata Institute of Fundamental Research, Bombay, India;(5) Present address: Institute of Space and Aeronautical Science, University of Tokyo, Japan |
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| Abstract: | The size of the hard X-ray source in the Crab Nebula was observed with scintillation counters on board two balloons at a lunar occulatation on 24 January, 1975. The Gaussian width of the source is 34 (+17, –14) and the center thereof is offset from the pulsar by 6±4 at position angle 102°. The observed time profile can also be fitted to an alternative model of two line sources whose intensities are 48% at 11 and 25.5% at 7 on both sides of the pulsar.Paper presented at the COSPAR Symposium on Fast Transients in X- and Gamma-Rays, held at Varna, Bulgaria, 29–31 May, 1975. |
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