Speckel Interferometry of SN 1987A and the "Mystery Spot"

Please use this identifier to cite or link to this item: http://hdl.handle.net/2248/11

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DC Field	Value	Language
dc.contributor.author	Nityananda, Rajarama	-
dc.date.accessioned	2004-11-08T12:02:27Z	-
dc.date.available	2004-11-08T12:02:27Z	-
dc.date.issued	1988	-
dc.identifier.citation	Kodaikanal Observatory Bulletins Series A, Vol 10, pp. 55-58	en
dc.identifier.issn	0374-3632	-
dc.identifier.uri	http://hdl.handle.net/2248/11	-
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 15o and a separation of 60 milliarcseconds, in a 100Å wide band including Hα. Among the possible explanations suggested for this remarkable source are (i) A relativistic jet breaking out from a weak spot in the supernova shell (ii) Relativistic ejection among 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.	-
dc.format.extent	118773 bytes	-
dc.format.mimetype	application/pdf	-
dc.language.iso	en	-
dc.publisher	Indian Institute of Astrophysics	en
dc.subject	Speckle Interferometry	en
dc.subject	Supernova 1987A	en
dc.title	Speckel Interferometry of SN 1987A and the "Mystery Spot"	en
dc.type	Article	en
Appears in Collections:	IIAP Publications Kodaikanal Observatory Bulletins (1905 - 1997 )

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