-------------------------------------------------------------------------------- Compton Observatory ***************** BATSE Bright Source Report ***************** (Earth Occultation Monitoring) -------------------------------------------------------------------------------- Data for: Jan. 9, 1998 thru Jan. 13, 1998 TJD 10822-10826 Source TJD Flux Spectral Signif** Comments (ph/cm^2 sec, Index* 20-100 keV) (20-100 keV) CRAB 10822 0.32 -2.2 73.5 10823 0.31 69.1 10824 0.31 60.4 10825 0.32 62.3 10826 0.32 70.4 CYGX-1 10822 0.25 -2.0 52.6 Seems Active 10823 0.30 58.9 10824 0.28 44.1 10825 0.40 63.6 10826 0.35 52.1 4U1700-377 10822 0.15 -3.0 14.1 10823 0.05 4.6 10824 0.05 4.0 10825 0.09 6.7 10826 0.07 4.9 GRS1915+105 10822 0.09 -2.8 12.8 10823 0.08 11.8 10824 0.09 10.8 10825 0.14 20.3 10826 0.11 14.1 1E1740-29 10822 0.06 -2.5 9.2 10823 0.09 13.2 10824 0.06 8.9 10825 0.06 7.8 10826 0.06 4.7 GS1354-645 10822 0.05 -2.5 8.7 10823 0.04 5.7 10824 0.04 6.0 10825 0.04 5.3 10826 0.04 5.0 SCOX-1 10822 0.27 -5.0 6.5 10823 0.14 5.0 10824 0.19 7.5 10825 0.09 4.1 10826 0.11 4.8 GX301-2 10822 0.08 -4.4 6.1 10825 0.06 4.3 OAO1657-415 10822 0.07 -3.4 5.4 10826 0.05 3.0 GRS1758-258 10822 0.02 -2.0 3.0 10823 0.02 3.9 10824 0.03 4.5 10825 0.04 7.0 CYGX-3 10823 0.05 -3.3 4.2 10824 0.07 4.5 10826 0.06 3.9 NGC4151 10823 0.02 -2.0 3.4 VELAX-1 10823 0.04 -3.7 3.3 10824 0.08 7.2 10825 0.05 4.4 10826 0.11 8.7 NOVA_CYG 10824 0.08 -2.0 3.6 10826 0.10 3.7 GROJ1744-28 10825 0.10 -4.2 4.9 CEN_A 10825 0.01 -1.9 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).