The Reverse Shock of SNR 1987A

Details The Reverse Shock of SNR 1987A The Reverse Shock of SNR 1987A

2007-04-10

arxiv.org/abs/0704.1304v1

AIP Conf.Proc.937:51-57,2007

Astronomy and Astrophysics

Astrophysics

Highlights of invited talk at Aspen conference: "Supernova 1987A: 20 Years After -- Supernovae & Gamma-Ray Bursters"

Scientific paper

10.1063/1.2803617

The reverse shock of supernova remnant (SNR) 1987A emits in H-alpha and Ly-alpha, and comes in two flavors: surface and interior. The former is due to direct, impact excitation of hydrogen atoms crossing the shock, while the latter is the result of charge transfer reactions between these atoms and slower, post-shock ions. Interior and surface emission are analogous to the broad- and narrow-line components observed in Balmer-dominated SNRs. I summarize a formalism to derive line intensities and ratios in these SNRs, as well as a study of the transition zone in supernova shocks; I include an appendix where I derive in detail the ratio of broad to narrow H-alpha emission. Further study of the reverse shock emission from SNR 1987A will allow us to predict when it will vanish and further investigate the origins of the interior emission.

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