Talk:Light echo

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An entry from Light echo appeared on Wikipedia's Main Page in the Did you know? column on April 20, 2007.
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[edit] Only example?

Are you sure that V838 Mon was the only observed light echo since 1936? Here are some links that analyse light echoes around other supernovae: Multiple Light Echoes from Supernova 1993J, Sugerman & Crotts, ApJ 2002; A New View of the Circumstellar Environment of SN 1987A, Sugerman, Crotts, Kunkel, Heathcote & Lawrence, ApJ, 2005. Searching citebase for some of the authors mentioned also reveals similar papers. SamGeen(talk)

  • I was going off the information provided by the ESA on that one. Certainly if there are other examples that can be dug up then by all means they should be added to the article! Arkyan • (talk) 14:42, 20 April 2007 (UTC)
Yes, I don't know what the ESA site meant. Possibly it was referring to direct observations; the methods used in the papers appear to be difference methods, where the flux in the two images is subtracted to remove bright, constant light sources like stars. I don't know whether the ESA site meant direct observations without using difference methods. In any case, it's only something I've come across for project work - I don't know a huge amount about it. SamGeen(talk) 18:04, 20 April 2007 (UTC)