Paper in Nature (24 April 2008) On BL Lac
Right click on each file to download onto disk
PDF file of the supplementary material (more details on the observations & calculations)
News & Views article by David Meier
Updated version of Figure 2 with the light curves (additional polarization data between the 2 flares & during the 2nd flare) - tried but failed to substitute for the version that appeared in the paper:
.ps file .jpg file .pdf file
Web page with information on the paper for the public
