Smoke Rings around Supernova 1987A

Details Smoke Rings around Supernova 1987A Smoke Rings around Supernova 1987A

Nov 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995ap%26ss.233...75m&link_type=abstract

Astrophysics and Space Science, Volume 233, Issue 1-2, pp. 75-79

Astronomy and Astrophysics

Astrophysics

1

Supernovae: Individual: Sn 1987A, Ism: Supernova Remnants

Scientific paper

Detailed observations of the [O iii]5007 Å emission from the elliptical rings around SN 1987A suggest a model wherein the two faint, outer rings are due to emission from two circular toroids moving outwards (at ≤ 25 km s-1) along a bipolar cone centred on the site of the supernova. The brighter, central ring is expanding radially outward at 8.3 km s-1. The rings must have been created ˜ 2-3 × 104 years before the supernova explosion and are thought to be a consequence of the interaction of stellar winds emanating from the progenitor system during the final stages of its evolution to a supernova.

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