THE DESTRUCTION OF THE CIRCUMSTELLAR RING OF SN 1987A

@article{Fransson2015THEDO,
  title={THE DESTRUCTION OF THE CIRCUMSTELLAR RING OF SN 1987A},
  author={C. Fransson and J. Larsson and K. Migotto and D. Pesce and P. Challis and R. Chevalier and K. France and R. Kirshner and B. Leibundgut and P. Lundqvist and R. McCray and J. Spyromilio and F. Taddia and A. Jerkstrand and S. Mattila and N. Smith and J. Sollerman and J. Wheeler and A. Crotts and P. Garnavich and K. Heng and S. Lawrence and N. Panagia and C. Pun and G. Sonneborn and B. Sugerman},
  journal={The Astrophysical Journal},
  year={2015},
  volume={806}
}
We present imaging and spectroscopic observations with HST and VLT of the ring of SN 1987A from 1994 to 2014. After an almost exponential increase of the shocked emission from the hotspots up to day 8; 000 ( 2009), both this and the unshocked emission are now fading. From the radial positions of the hotspots we see an acceleration of these up to 500 1000 km s 1 , consistent with the highest spectroscopic shock velocities from the radiative shocks. In the most recent observations (2013 and 2014… Expand
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