BAT analysis for AT2018cow

Notes:

• 1) The analysis utilizes the preliminary Swift Quick-Look Data.
• 2) The mask-weighting calculation uses the source location at (RA, Dec) = (244.00090, 22.26800) deg from ATEL #11727.
• 3) T0 in the BAT survey light curve is 2018-06-16 at 10:35:02 UTC (i.e. DoY=167) from ATEL #11727.
• 4) There were no BAT data from T0-13 day (2018-06-03; DoY=154) to T0-2 day (2018-06-14; DoY=165) due to a scheduled BAT reboot.
• 5) (Update 2018-07-21): The partial coding fraction is now taken into account when estimate the exposure time. That is, now we report the effective "on-axis" exposure, T_eff = p*T0, where p is the partial coding fraction and T0 is the actual exposure time.
• 6) (Update 2018-10-26): Daily light curves are now updated with the ones using HEASARC data and the compelte BAT survey processing pipeline (Tueller et al. 2010). These daily light curves and correspoding data are those presented in Kuin et al. (2018).

BAT survey data analysis

(1) Daily light curve

• Light curves in other energy bands:
  14-20 keV; 20-24 keV; 24-35 keV; 35-50 keV; 50-75 keV; 75-100 keV; 100-150 keV; 150-195 keV

• Data for the daily light curves:
  14-20 keV; 20-24 keV; 24-35 keV; 35-50 keV; 50-75 keV; 75-100 keV; 100-150 keV; 150-195 keV; 14-195 keV

(2) light curve from snapshot observations

• Light curves in other energy bands:
  14-20 keV; 20-24 keV; 24-35 keV; 35-50 keV; 50-75 keV; 75-100 keV; 100-150 keV; 150-195 keV

• Data for the snapshot light curves: FITS file (standard BAT survey output catalog and contains the 8-band data).

Light curve from BAT transient monitor

Last updated: 2018-10-26 12:08 EDT