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Time Domain Explorations With Digital Sky Surveys

Mahabal, Ashish A. and Djorgovski, S. G. and Graham, M. J. and Kollipara, Priya and Granett, Benjamin and Krause, Elisabeth and Williams, Roy and Bogosavljevic, M. and Baltay, C. and Rabinowitz, D. and Bauer, A. and Andrews, P. and Ellman, N. and Duffau, S. and Jerke, J. and Rengstorf, A. and Brunner, R. and Musser, J. and Mufson, S. and Gebhard, M. (2005) Time Domain Explorations With Digital Sky Surveys. In: Astronomical Data Analysis Software and Systems XIV. ASP Conference Series. No.347. Astronomical Society of the Pacific , San Francisco, CA, P2.2.7.

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One of the new frontiers of astronomical research is the exploration of time variability on the sky at different wavelengths and flux levels. We have carried out a pilot project using DPOSS data to study strong variables and transients, and are now extending it to the new Palomar-QUEST synoptic sky survey. We report on our early findings and outline the methodology to be implemented in preparation for a real-time transient detection pipeline. In addition to large numbers of known types of highly variable sources (e.g., SNe, CVs, OVV QSOs, etc.), we expect to find numerous transients whose nature may be established by a rapid follow-up. Whereas we will make all detected variables publicly available through the web, we anticipate that email alerts would be issued in the real time for a subset of events deemed to be the most interesting. This real-time process entails many challenges, in an effort to maintain a high completeness while keeping the contamination low. We will utilize distributed Grid services developed by the GRIST project, and implement a variety of advanced statistical and machine learning techniques.

Item Type:Book Section
Mahabal, Ashish A.0000-0003-2242-0244
Djorgovski, S. G.0000-0002-0603-3087
Graham, M. J.0000-0002-3168-0139
Additional Information:This work was supported in part by the NSF grants AST-0326524, AST-0407448 and the NASA contract NAG5-9482. PK and EK were supported in part by SURF Fellowships at Caltech. SGD acknowledges a partial support from the Ajax Foundation. Also available: arXiv:astro-ph/0412164 v1 7 Dec 2004
Group:Center for Advanced Computing Research
Series Name:ASP Conference Series
Issue or Number:347
Record Number:CaltechCACR:2005.117
Persistent URL:
Usage Policy:You are granted permission for individual, educational, research and non-commercial reproduction, distribution, display and performance of this work in any format.
ID Code:28226
Deposited By: Imported from CaltechCACR
Deposited On:15 Feb 2006
Last Modified:09 Mar 2020 13:18

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