Specke interferometry of SN 1987A and the "Mystery spot"
| 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.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.identifier.citation | Kodaikanal Observatory Bulletin, 1988, Vol.10, p55-58 | en |
| dc.identifier.uri | http://hdl.handle.net/2289/2567 | |
| 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 |