-------------------------------------------------------------------------------- Compton Observatory ***************** BATSE Bright Source Report ***************** (Earth Occultation Monitoring) -------------------------------------------------------------------------------- Data for: Feb. 11, 1998 thru Feb. 16, 1998 TJD 10855-10860 Source TJD Flux Spectral Signif** Comments (ph/cm^2 sec, Index* 20-100 keV) (20-100 keV) CYGX-1 10855 0.30 -2.0 80.1 10856 0.31 85.3 10857 0.33 82.7 10858 0.34 89.6 10859 0.37 97.3 10860 0.34 90.3 CRAB 10855 0.32 -2.2 67.7 10856 0.32 68.2 10857 0.32 70.5 10858 0.32 64.2 10859 0.32 74.1 10860 0.32 71.4 4U1630-47 10855 0.11 -3.0 18.6 10856 0.10 16.7 10857 0.10 13.9 10858 0.09 14.5 10859 0.09 13.7 10860 0.09 9.6 SCOX-1 10855 0.18 -5.0 13.9 10856 0.12 8.5 10857 0.19 14.0 10858 0.10 8.3 10859 0.12 10.2 10860 0.13 6.9 VELAX-1 10855 0.11 -3.7 10.7 10856 0.10 10.3 10857 0.07 6.7 10859 0.04 4.7 10860 0.08 8.6 1E1740-29 10855 0.05 -2.5 9.7 Probable 10856 0.07 12.8 Interference 10857 0.06 11.2 from other 10858 0.07 12.8 Galactic Center 10859 0.06 10.6 Sources 10860 0.06 10.3 CYGX-3 10855 0.05 -3.3 5.9 10856 0.04 5.7 10857 0.06 6.3 10858 0.04 4.9 10859 0.03 3.2 10860 0.04 5.5 GX1+4 10855 0.04 -3.0 4.9 10856 0.03 3.4 10857 0.03 4.2 10858 0.02 3.0 10859 0.03 3.9 CEN_A 10855 0.02 -1.9 4.1 10860 0.02 3.4 4U1700-377 10855 0.03 -3.0 4.0 10856 0.10 14.6 10857 0.06 9.0 10858 0.02 3.1 10859 0.07 10.4 10860 0.06 10.0 GS1826-238 10855 0.03 -3.0 3.5 10857 0.03 4.0 10858 0.03 4.7 10860 0.04 5.7 4U1735-444 10856 0.03 -3.0 3.0 Possible 10857 0.04 4.6 Interference 10859 0.02 3.3 OAO1657-415 10858 0.04 -3.4 4.3 10860 0.05 4.7 GX301-2 10860 0.09 -4.4 4.4 HERX-1 10860 0.04 -4.4 3.6 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).