Optically Selected GRB Afterglows, a Real Time Analysis System at the CFHT
Frederic Malacrino, Jean-Luc Atteia, Michel Boer, Alain Klotz, John J. Kavelaars, Jean-Charles Cuillandre, the GRB RTAS Collaboration Collaboration
Abstract
We attempt to detect optical GRB afterglows on images taken by the Canada France Hawaii Telescope for the Very Wide survey, component of the Legacy Survey. To do so, a Real Time Analysis System called "Optically Selected GRB Afterglows" has been installed on a dedicated computer in Hawaii. This pipeline automatically and quickly analyzes Megacam images and extracts from them a list of variable objects which is displayed on a web page for validation by a member of the collaboration. The Very Wide survey covers 1200 square degrees down to i'=23.5. This paper briefly explain the RTAS process.
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