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Swift-XRT GRB spectrum repository
Due to scheduled maintenance, there may be interruptions to the www.swift.ac.uk website and related services on Tuesday 1st September 2026. This work is part of routine but essential infrastructure maintenance. We apologise for any inconvenience.
This website contains a repository of Swift/XRT spectra for all GRBs which have been detected by this instrument. These spectra are suitable for scientific analysis and publication (see the usage policy). The default spectrum is a time-averaged spectrum. For some GRBs, XRT-team members may have added time-sliced spectra as well which will appear on the results pages. For more information, see the online documentation.
NEW: Guidelines for downloading XRT GRB products in bulk.
To view a GRB either select a thumbnail from the box to the right, or use one of the three methods below:
1) View thumbnails of all spectra.