-------------------------------------------------------------------------------- Compton Observatory ***************** BATSE Bright Source Report ***************** (Earth Occultation Monitoring) -------------------------------------------------------------------------------- Data for: Apr. 7, 1997 thru Apr. 13, 1997 TJD 10545-10551 Source TJD Flux Spectral Signif** Comments (ph/cm^2 sec, Index* 20-100 keV) (20-100 keV) CYGX-1 10545 0.36 -2.0 66.5 10546 0.27 54.5 10547 0.31 59.2 10548 0.34 59.4 10549 0.36 19.5 10550 0.32 66.8 10551 0.29 58.8 CRAB 10545 0.33 -2.2 63.8 10546 0.34 63.4 10547 0.32 57.9 10548 0.33 59.5 10549 0.33 62.3 10550 0.32 65.0 10551 0.33 70.4 GX301-2 10545 0.14 -4.4 14.0 10546 0.14 14.5 10547 0.08 7.6 10548 0.04 4.0 GROJ1744-28 10545 0.12 -4.2 11.1 10546 0.13 13.4 10547 0.11 11.1 10548 0.09 10.4 10549 0.08 9.1 10550 0.09 9.8 10551 0.09 9.7 GX339-4 10545 0.07 -2.4 10.4 10546 0.05 7.6 10547 0.05 8.7 10548 0.06 11.3 10549 0.06 12.1 10550 0.05 10.1 10551 0.05 10.5 GRS1915+105 10545 0.07 -2.8 6.8 10546 0.05 4.3 10547 0.06 7.5 10548 0.06 9.2 10549 0.07 12.8 10550 0.09 17.4 10551 0.08 16.0 4U1700-377 10545 0.06 -3.0 5.8 10546 0.10 11.7 10547 0.08 8.9 10549 0.10 9.1 10550 0.12 11.1 GX1+4 10545 0.06 -3.0 5.1 10546 0.04 3.9 CYGX-3 10545 0.05 -3.3 4.4 10546 0.06 5.5 10547 0.07 5.9 10548 0.07 6.2 10549 0.04 4.3 10550 0.03 3.3 10551 0.04 4.0 VELAX-1 10545 0.03 -3.7 3.4 10546 0.12 14.0 10547 0.18 17.9 10548 0.08 7.2 10549 0.07 6.4 10550 0.06 6.0 10551 0.10 9.9 SCOX-1 10546 0.13 -5.0 6.7 10547 0.17 10.2 10548 0.21 12.4 10549 0.14 6.2 10550 0.16 7.5 10551 0.14 9.0 OAO1657-415 10546 0.07 -3.4 5.4 10547 0.06 5.7 10548 0.04 5.6 10549 0.03 4.1 CENX-3 10546 0.03 -4.5 3.1 10549 0.03 3.6 10551 0.05 5.7 NGC4151 10549 0.02 -2.0 4.0 10550 0.02 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).