/* ** ** 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 56998.028253 0.000915 0.16079 0.03595 0.95238 1 56998.029996 0.000828 0.16733 0.03782 1.00000 1 56998.031870 0.001046 0.13966 0.03123 0.95833 1 56998.033773 0.000857 0.16360 0.03718 0.98305 1 56998.035196 0.000566 0.25359 0.05670 0.97436 1 56998.036954 0.001191 0.16591 0.03218 0.95039 1