Dunlap Institute for Astronomy & Astrophysics | University of Toronto | 2018 Oct 31
Since it first appeared in the southern night sky on February 24th 1987, Supernova 1987A has been one of the most studied objects in the history of astronomy.
The supernova was the cataclysmic death of a blue supergiant star, some 168,000 light-years from Earth, in the Large Magellanic Cloud, a satellite galaxy of our own Milky Way Galaxy. It was the brightest supernova to appear in our skies since Kepler’s Supernova in 1604 and the first since the invention of the telescope.
The brilliant new star was first spotted by two astronomers working at the Las Campanas Observatory in northern Chile the night of the 24th: the University of Toronto’s Ian Shelton, and a telescope operator at the observatory, Oscar Duhalde.
Now, Yvette Cendes, a graduate student with the University of Toronto and the Leiden Observatory, has created a time-lapse showing the aftermath of the supernova over a 25-year period, from 1992 to 2017. The images show the shockwave expanding outward and slamming into debris that ringed the original star before its demise. ...
The Reacceleration of the Shock Wave in the Radio Remnant of SN 1987A ~ Yvette Cendes et al