Volume 519, September 2010
|Number of page(s)||7|
|Section||Catalogs and data|
|Published online||20 September 2010|
The Swift Burst Analyser
I. BAT and XRT spectral and flux evolution of gamma ray bursts
Department of Physics and Astronomy, University of Leicester, Leicester, LE1 7RH, UK e-mail: email@example.com
2 NASA/Goddard Space Flight Center, Astrophysics Science Division, Greenbelt, MD 20771, USA
3 CRESST/Center for Research and Exploration in Space Science and Technology, 10211 Wincopin Circle, Suite 500, Columbia, MD 21044, USA
4 Department of Astronomy, University of Maryland College Park, College Park, MD 20742, USA
5 Department of Astronomy and Astrophysics, 525 Davey Lab., Pennsylvania State University, University Park, PA 16802, USA
6 INAF, Istituto di Astrofisica Spaziale e Fisica Cosmica, via U La Malfa 153, 90146 Palermo, Italy
Accepted: 15 June 2010
Context. Gamma ray burst models predict the broadband spectral evolution and the temporal evolution of the energy flux. In contrast, standard data analysis tools and data repositories provide count-rate data, or use single flux conversion factors for all of the data, neglecting spectral evolution.
Aims. We produce Swift BAT and XRT light curves in flux units, where the spectral evolution is accounted for.
Methods. We have developed software to use the hardness ratio information to track spectral evolution of GRBs, and thus to convert the count-rate light curves from the BAT and XRT instruments on Swift into accurate, evolution-aware flux light curves.
Results. The Swift Burst Analyser website (http://www.swift.ac.uk/burst_analyser) contains BAT, XRT and combined BAT-XRT flux light curves in three energy regimes for all GRBs observed by the Swift satellite. These light curves are automatically built and updated when data become available, are presented in graphical and plain-text format, and are available for download and use in research.
Key words: gamma-ray burst: general / methods: data analysis / catalogs
© ESO, 2010
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