-------------------------------------------------------------------------------- Compton Observatory ***************** BATSE Bright Source Report ***************** (Earth Occultation Monitoring) -------------------------------------------------------------------------------- Data for: Dec. 18, 1997 thru Dec. 21, 1997 TJD 10800-10803 Source TJD Flux Spectral Signif** Comments (ph/cm^2 sec, Index* 20-100 keV) (20-100 keV) CRAB 10800 0.32 -2.2 82.3 10801 0.31 77.3 10802 0.31 80.9 10803 0.31 78.8 CYGX-1 10800 0.28 -2.0 66.1 10801 0.27 63.7 10802 0.27 70.1 10803 0.29 65.9 SCOX-1 10800 0.33 -5.0 21.3 10801 0.17 13.3 10802 0.17 12.1 10803 0.18 14.4 VELAX-1 10800 0.10 -3.7 10.0 10801 0.07 7.4 10802 0.04 5.3 1E1740-29 10800 0.05 -2.5 8.2 10801 0.06 9.2 10802 0.04 7.1 10803 0.06 12.1 GS1354-645 10800 0.04 -2.5 6.2 10801 0.07 9.6 10802 0.02 3.1 10803 0.05 7.5 OAO1657-415 10800 0.09 -3.4 4.7 possible interference GRS1915+105 10800 0.03 -2.8 3.9 10801 0.05 6.5 10802 0.09 12.0 10803 0.06 8.3 CYGX-3 10800 0.04 -3.3 3.6 10801 0.05 4.6 10802 0.05 4.9 10803 0.05 5.9 GX301-2 10801 0.06 -4.4 4.3 10802 0.09 6.2 3C273 10801 0.01 -1.6 3.5 GRS1758-258 10801 0.02 -2.0 3.4 4U1700-377 10802 0.15 -3.0 11.2 possible interference 10803 0.10 7.8 GX1+4 10802 0.04 -3.0 5.8 10803 0.05 6.3 GX339-4 10802 0.05 -2.4 5.7 10803 0.06 5.8 CEN_A 10802 0.02 -1.9 4.2 10803 0.02 3.3 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).