Automated Probabilistic Classification of Transients and Variables

Details Automated Probabilistic Classification of Transients and Variables Automated Probabilistic Classification of Transients and Variables

2008-02-21

arxiv.org/abs/0802.3199v1

Astronomy and Astrophysics

Astrophysics

Latex, 4 pages, 3 figures, macros included. To appear in refereed proceedings of "Hotwiring the Transient Universe 2007", eds.

Scientific paper

10.1002/asna.200710943

There is an increasing number of large, digital, synoptic sky surveys, in which repeated observations are obtained over large areas of the sky in multiple epochs. Likewise, there is a growth in the number of (often automated or robotic) follow-up facilities with varied capabilities in terms of instruments, depth, cadence, wavelengths, etc., most of which are geared toward some specific astrophysical phenomenon. As the number of detected transient events grows, an automated, probabilistic classification of the detected variables and transients becomes increasingly important, so that an optimal use can be made of follow-up facilities, without unnecessary duplication of effort. We describe a methodology now under development for a prototype event classification system; it involves Bayesian and Machine Learning classifiers, automated incorporation of feedback from follow-up observations, and discriminated or directed follow-up requests. This type of methodology may be essential for the massive synoptic sky surveys in the future.

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