-------------------------------------------------------------------------------- Compton Observatory ***************** BATSE Bright Source Report ***************** (Earth Occultation Monitoring) -------------------------------------------------------------------------------- Data for: Jul. 31, 1997 thru Aug. 6, 1997 TJD 10660-10666 Source TJD Flux Spectral Signif** Comments (ph/cm^2 sec, Index* 20-100 keV) (20-100 keV) CRAB 10660 0.32 -2.2 65.8 10661 0.32 75.5 10662 0.32 79.5 10663 0.33 70.9 10664 0.32 77.2 10665 0.32 51.4 10666 0.31 62.0 CYGX-1 10660 0.30 -2.0 66.2 10661 0.30 67.8 10662 0.31 65.9 10663 0.31 68.2 10664 0.33 62.5 10665 0.30 43.0 10666 0.27 59.9 VELAX-1 10660 0.03 -3.7 3.2 10662 0.10 11.2 10663 0.18 19.4 10664 0.17 18.7 10665 0.13 11.0 10666 0.09 8.7 SCOX-1 10660 0.11 -5.0 3.9 10661 0.17 8.4 10662 0.17 10.7 Possible Interference 10663 0.18 9.9 10664 0.11 6.8 10665 0.27 15.3 10666 0.18 9.4 CYGX-3 10660 0.08 -3.3 8.8 10661 0.07 7.7 10662 0.05 5.4 10663 0.07 8.1 10664 0.09 8.8 10665 0.08 5.9 10666 0.05 5.6 4U1700-377 10660 0.04 -3.0 4.2 Probable Interference 10661 0.15 18.1 " " 10662 0.07 7.5 " " 10663 0.06 6.2 " " 10664 0.06 4.5 10665 0.17 10.7 10666 0.06 4.7 1E1740-29 10660 0.05 -2.5 6.2 Probable Interference 1E1740-29 10661 0.05 -2.5 7.3 " " 10662 0.05 8.4 " " 10663 0.05 5.9 " " 10665 0.04 3.9 10666 0.06 6.6 GX1+4 10662 0.04 -3.0 4.9 Possible Interference 10663 0.05 5.2 " " 10664 0.08 6.9 " " 10665 0.06 3.9 10666 0.05 3.5 GX339-4 10660 0.03 -2.4 5.1 Possible Interference 10661 0.07 8.8 " " 10662 0.06 8.2 " " 10663 0.05 4.9 " " 10664 0.06 7.0 10665 0.07 5.4 GX301-2 10661 0.06 -4.4 3.5 10663 0.07 4.6 10664 0.10 6.3 10665 0.07 3.5 10666 0.15 10.2 Approaching Periastron OAO1657-415 10661 0.06 -3.4 5.5 Probable Interference 10662 0.04 3.5 " " 10663 0.05 3.3 " " 10665 0.07 3.0 GRS1758-258 10662 0.02 -2.0 3.6 Probable Interference 10663 0.02 3.3 " " 10666 0.03 4.1 GRS1915+105 10662 0.03 -2.8 3.8 Possible Interference 10663 0.02 3.1 " " 10664 0.04 6.2 10666 0.03 4.1 CENX-3 10660 0.06 -4.5 4.1 10662 0.09 5.7 10664 0.08 6.3 10665 0.09 4.5 10666 0.05 3.5 HD32918 10663 0.02 -2.0 3.9 Doubtfull HERX-1 10661 0.05 -4.4 4.0 4U1630-47 10664 0.03 -3.0 3.6 GROJ1655-40 10662 0.04 -3.2 3.0 CEN_A 10660 0.01 -1.9 3.2 3C279 10665 0.03 -2.0 3.9 NGC4151 10665 0.02 -2.0 3.8 GROJ1744-28 10666 0.09 -4.2 3.6 Possible Interference 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).