Specke interferometry of SN 1987A and the "Mystery spot"

Nityananda, R.

Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/2567

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DC Field	Value	Language
dc.contributor.author	Nityananda, R.	-
dc.date.accessioned	2007-06-04T08:05:32Z	-
dc.date.available	2007-06-04T08:05:32Z	-
dc.date.issued	1988-02-24	-
dc.identifier.citation	Kodaikanal Observatory Bulletin, 1988, Vol.10, p55-58	en
dc.identifier.uri	http://hdl.handle.net/2289/2567	-
dc.description	Restricted Access.	en
dc.description.abstract	Two groups have independently studied SN1987A by the technique of optical speckle interferometry in the visible region of wavelengths about a month after the explosion . Both detect a secondary source a factor of ten fainter than the primary, at a position angle of 15' and a separation of 60 milliarcseconds , in a 1002 wide band including H alpha . Among the possible explanations suggested for this remarkable source a r e (i) A relativistic jet breaking out from a weak spot in the supernova shell (ii) Relativistic ejection along the axis of rotation during the collapse (iii) Ionisation of a nearby gas cloud by a flash of hard radiation emitted at a very early stage , followed by recombination. The secondary source has now d is appeared leaving us to decide between these two possibilities	en
dc.format.extent	182147 bytes	-
dc.format.mimetype	application/pdf	-
dc.language.iso	en	en
dc.publisher	Indian Institute of Astrophysics, Bangalore	en
dc.relation.uri	http://adsabs.harvard.edu/cgi-bin/bib_query?1988KodOB..10...55N	en
dc.relation.uri	http://hdl.handle.net/2248/11	en
dc.rights	1988 Indian Institute of Astrophysics	en
dc.title	Specke interferometry of SN 1987A and the "Mystery spot"	en
dc.type	Article	en
Appears in Collections:	Research Papers (A&A)

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