/* ** ** 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 57239.258647 0.001031 0.15134 0.03384 0.97183 1 57239.260332 0.000654 0.22727 0.05082 1.00000 1 57239.261857 0.000872 0.17844 0.03990 0.96667 1 57239.263280 0.000552 0.28325 0.06334 0.94737 1 57239.264646 0.000813 0.19548 0.04371 0.92857 1 57239.266316 0.000857 0.18153 0.04081 0.94915 1 57239.267943 0.000770 0.34555 0.05926 0.94184 1