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Recently observed GRBs

Swift-XRT GRB lightcurve repository

The UKSSDC will be completely offline from around 11:00 BST (10:00 UT) on 2024 April 16 for up to 3 days. This is due to essential hardware work affecting the room in which our servers are located, and it is hoped that the work will be completed well within the window above. On-demand processing will be disabled some hours before the shutdown, and any jobs still running at the time of shutdown will be lost.

This website contains a repository of Swift/XRT lightcurves for all GRBs which have been detected by this instrument. These lightcurves, which are official products of the Swift/XRT team, have been extensively tested against manually-created lightcurves. Users are advised that different binning of a lightcurve can affect its detailed appearance. For more information, see the online documentation.

NEW: Guidelines for downloading XRT GRB products in bulk.

Usage policy

The references for these products are Evans et al. (2009, MNRAS, 397, 1177) and Evans et al. (2007, A&A, 469, 379). Please also use this acknowledgement if you use them.

Select a light curve:

You can choose a recently observed object from the box on the right, or use one of the three methods below to select a burst:

1) Thumbnails of all light curves: Basic light curves | Detailed light curves | Flux light curves | Hardness ratios.