------------------------------------------------------------------------------- Compton Observatory ***************** BATSE Bright Source Report ***************** (Earth Occultation Monitoring) ------------------------------------------------------------------------------- Data for: Sep. 4, 1997 thru Sep. 7, 1997 TJD 10695-10698 Source TJD Flux Spectral Signif** Comments (ph/cm^2 sec, Index* 20-100 keV) (20-100 keV) CYGX-1 10695 0.27 -2.0 77.5 10696 0.26 75.0 10697 0.23 62.7 10698 0.24 67.2 CRAB 10695 0.31 -2.2 55.3 10696 0.31 37.7 10697 0.32 56.1 10698 0.32 45.0 GRS1915+105 10695 0.10 -2.8 16.7 10696 0.08 12.9 10697 0.09 15.7 10698 0.04 6.2 SCOX-1 10695 0.19 -5.0 13.3 10696 0.16 10.5 10697 0.06 4.2 10698 0.12 7.7 1E1740-29 10695 0.05 -2.5 8.1 10696 0.05 9.0 10697 0.05 9.5 10698 0.04 6.4 GX339-4 10695 0.05 -2.4 6.4 10696 0.05 5.0 10697 0.05 5.7 10698 0.05 8.9 VELAX-1 10695 0.08 -3.7 6.3 10696 0.07 6.8 10698 0.06 6.2 CYGX-3 10695 0.05 -3.3 5.7 10696 0.04 5.7 10697 0.03 4.4 GS1826-238 10695 0.03 -3.0 4.5 possible source 10696 0.03 4.8 confusion 10697 0.02 4.4 10698 0.03 6.1 4U1700-377 10696 0.12 -3.0 8.3 10697 0.21 17.2 10698 0.06 5.7 OAO1657-415 10698 0.05 -3.4 3.5 CEN_A 10698 0.01 -1.9 3.1 Notes: * Spectral index for power law fit to photon number spectrum (photons/cm^2-s) in 20-100 keV band **Detection Significance, = Flux/Sigma ------------------------------------------------------------------------------- The information given above comes from the quick-look analysis performed daily on data obtained from the Burst and Transient Source Experiment (BATSE). The typical sensitivity of these measurements using the Earth occultation technique (one-day integration) is ~100 mCrab. Be aware that sources within about 22 degrees of the orbital poles are not occulted by the Earth; therefore, some bright sources may not show up in the daily averages. These quick-look science results are freely available, but should be considered preliminary. Please use with caution. For additional information, contact B.A. Harmon (harmon@sslmor.msfc.nasa.gov).