-------------------------------------------------------------------------------- Compton Observatory ***************** BATSE Bright Source Report ***************** (Earth Occultation Monitoring) -------------------------------------------------------------------------------- Data for: Apr. 28, 1997 thru May. 3, 1997 TJD 10566-10571 Source TJD Flux Spectral Signif** Comments (ph/cm^2 sec, Index* 20-100 keV) (20-100 keV) CRAB 10566 0.34 -2.2 79.2 10567 0.34 82.1 10568 0.33 82.3 10569 0.33 76.9 10570 0.33 75.3 10571 0.34 71.4 CYGX-1 10566 0.35 -2.0 49.9 10567 0.32 46.1 10568 0.34 42.5 10569 0.26 26.0 10570 0.32 14.3 10571 0.33 6.7 SCOX-1 10566 0.23 -5.0 15.9 10567 0.14 10.0 10568 0.17 11.0 10569 0.28 16.6 10570 0.17 13.1 10571 0.15 11.0 1E1740-29 10566 0.05 -2.5 8.6 10567 0.04 7.1 10568 0.05 7.7 10569 0.06 8.6 10570 0.07 7.1 10571 0.06 6.9 4U1700-377 10566 0.07 -3.0 7.7 10569 0.11 9.3 10570 0.13 5.3 10571 0.07 4.5 HERX-1 10566 0.06 -4.4 7.2 10567 0.09 8.0 10568 0.10 9.6 10569 0.09 7.7 10570 0.11 12.9 10571 0.06 5.8 VELAX-1 10566 0.10 -3.7 6.9 10567 0.07 4.8 10568 0.14 9.8 10569 0.11 8.2 10570 0.10 6.9 OAO1657-415 10566 0.07 -3.4 6.7 10567 0.04 3.7 10568 0.05 4.3 10571 0.05 3.6 GRS1915+105 10567 0.11 -2.8 9.0 10568 0.15 16.3 10569 0.16 16.0 10570 0.13 10.3 10571 0.10 7.5 CYGX-3 10567 0.07 -3.3 5.9 10568 0.06 4.9 10569 0.06 3.5 GRS1758-258 10567 0.02 -2.0 4.1 10571 0.03 3.5 CEN_A 10567 0.01 -1.9 3.5 GX339-4 10568 0.04 -2.4 4.6 10569 0.05 6.1 10570 0.04 5.6 10571 0.05 7.8 NGC4151 10569 0.01 -2.0 3.2 10571 0.01 4.5 3C273 10571 0.01 -1.6 3.5 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).