/* ** ** Swift/XRT light curve for BL Lacertae. ** ** Data taken from the automatic processing at http://www.swift.psu.edu/monitoring/ ** ** When using these data and results in publications, please reference M.C. Stroh & A.D. Falcone 2013, ApJS, 207, 28; arXiv: 1305.4949. ** ** Key: ** ** BinCenter - Center of time bin (MJD) ** BinHW - One-half of the full time bin size (days) ** Rate - The background subtracted, PSF corrected and pile-up corrected source count rate (cts/s). ** RateError - 1 sigma error in source count rate (cts/s) ** FracExp - Conversion factor between bin size and observing time ** Mode - 0 if in Windowed Timing (WT) ** 1 if in Photon Counting (PC) ** ** ** Upper limits have an error listed as -1.00000. ** */ BinCenter BinHW Rate RateError FracExp Mode 56271.660489 0.000350 1.13787 0.15192 0.98347 0 56271.661733 0.000894 1.60751 0.11577 0.94822 0 56271.663648 0.001021 1.37732 0.10004 0.95751 0 56271.665575 0.000906 1.55052 0.11312 0.96166 0 56271.668055 0.001574 1.55396 0.08522 0.95891 0 56271.708159 0.000457 1.24192 0.13876 0.98294 0