-------------------------------------------------------------------------------- Compton Observatory ***************** BATSE Bright Source Report ***************** (Earth Occultation Monitoring) -------------------------------------------------------------------------------- Data for: Jan. 29, 1998 thru Feb. 5, 1998 TJD 10842-10849 Source TJD Flux Spectral Signif** Comments (ph/cm^2 sec, Index* 20-100 keV) (20-100 keV) CRAB 10842 0.32 -2.2 67.2 10843 0.32 59.6 10844 0.31 59.8 10845 0.31 64.1 10846 0.31 69.0 10847 0.31 67.2 10848 0.31 64.9 10849 0.31 68.9 CYGX-1 10842 0.29 -2.0 54.2 10843 0.26 49.6 10844 0.29 67.3 10845 0.25 66.4 10846 0.33 88.8 10847 0.28 81.3 10848 0.25 73.1 10849 0.32 88.9 SCOX-1 10842 0.20 -5.0 15.9 10843 0.17 11.7 10844 0.12 8.9 10845 0.11 6.1 10846 0.18 10.0 10847 0.13 8.6 10848 0.14 8.3 10849 0.14 10.3 GRS1915+105 10842 0.12 -2.8 13.1 10843 0.08 4.8 10844 0.06 5.1 10845 0.09 10.2 10846 0.04 5.0 10847 0.04 5.9 10848 0.06 7.9 10849 0.04 5.1 4U1700-377 10842 0.08 -3.0 7.0 10845 0.12 13.1 10846 0.08 10.1 10847 0.07 8.4 10849 0.10 13.4 GRS1758-258 10842 0.04 -2.0 5.7 10843 0.03 4.7 10844 0.04 6.0 10845 0.05 9.0 10846 0.06 9.6 probable source 10847 0.08 10.3 confusion 10848 0.04 7.0 10849 0.03 6.8 CYGX-3 10842 0.04 -3.3 5.2 10843 0.04 4.2 10844 0.06 6.8 10845 0.04 5.1 10846 0.05 6.3 10847 0.05 5.1 10848 0.07 5.4 1E1740-29 10842 0.05 -2.5 4.9 10845 0.10 14.3 10846 0.09 13.0 10847 0.14 22.7 probable 10848 0.16 25.0 source confusion 10849 0.11 17.5 VELAX-1 10842 0.04 -3.7 3.7 10843 0.13 11.6 10844 0.06 5.0 10845 0.09 7.8 10846 0.17 12.6 HERX-1 10842 0.04 -4.4 3.5 10844 0.07 6.0 10845 0.08 7.3 10846 0.05 5.0 10847 0.06 5.0 4U1630-47 10842 0.03 -3.0 3.5 new outburst 10843 0.03 3.9 10844 0.05 5.8 10845 0.06 6.8 10846 0.11 15.9 probable 10847 0.10 11.5 source confusion 10848 0.04 3.6 10849 0.06 8.1 4U0614+091 10842 0.02 -2.3 3.5 10845 0.02 3.2 10846 0.03 5.7 CEN_A 10843 0.02 -1.9 4.5 10844 0.01 3.0 10846 0.02 3.7 OAO1657-415 10845 0.06 -3.4 5.3 10846 0.07 5.2 10849 0.11 8.2 NGC4151 10845 0.02 -2.0 4.7 10846 0.02 3.6 GS1354-645 10845 0.03 -2.5 3.5 10846 0.04 5.5 3C273 10845 0.01 -1.6 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).