The light echoes from SN1987A
作者： N. B. Suntzeff , S. Heathcote , W. G. Weller , N. Caldwell , J. P. Huchra
DOI: 10.1038/334135A0
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摘要: Direct imaging1,2 of supernova 1987A has revealed two semicircular arcs around the explosion site. Similar Nova Persei3,4 and V732 Sagittarii5 have been explained as light echoes from time maximum luminosity outburst. Here we report results deep imaging spectrophotometry SN1987A. The verifies nebular SN1987A near maximum. clouds must be at distances 115 305 pc in front We also observe an apparent proper motion for inner echo 1.8 arcsec per month which, 16 times speed light, is highly superluminal.
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