THIS FILE CHANGES WITH TIME -- HIT THE RELOAD BUTTON NOW! ///////////////////////////////////////////////////////////////////// GRB 980706 15:59:47.04 UT SOD=57587.04 sec TJD=11000 DOY=187 BATSE trigger = 6904. ///////////////////////////////////////////////////////////////////// TITLE: GCN/IPN/HUNTSVILLE LOCALIZATION NOTICE_TYPE: Updated (based on the BATSE-LOCBURST location) NOTICE_DATE: Mon Jul 6 23:09:18 GMT 1998 TRIGGER_NUM: 6904 GRB_DATE: 98/07/06 GRB_TIME: 15:59:47.04 UT BACO_RA: 165.02d {+11h 00m 05s} (J2000) BACO_DEC: +49.78d {+49d 46' 55"} HUNT_RA: 161.82d {+10h 47m 17s} (J2000) HUNT_DEC: 57.52d {+57d 31' 27"} HUNT_ERR: 2.06 [degees radius, statistical only] B_H_DELTA: 7.96 [deg] HUNT_SC_AZ: 292.47 [deg] HUNT_SC_EL: 43.24 [deg] {Zen_angle=46.76} SUN_POSTN: 105.61d {+07h 02m 27s} +22.66d {+22d 39' 47"} (Current) SUN_B_DIST: 53.30 [deg] MOON_POSTN: 247.67d {+16h 30m 41s} -16.71d {-16d 42' 39"} (Current) MOON_B_DIST: 98.09 [deg] ANNULUS_RA: 151.9790d {+10h 07m 55s} (J2000) ANNULUS_DEC: 8.8006d {+08d 48' 02"} ANNULUS_RADIUS: 49.644 [deg] ANNULUS_WIDTH: 0.072 [deg] (Total width) COMMENTS: A bright GRB. A single spike of less than 1sec duration. COMMENTS: There is a small exponential decay for 5-10 sec after COMMENTS: the spike. This burst was seen above 300 keV. COMMENTS: COMMENTS: This IPN notices is being distributed at T+7.3 hrs! This IPN localization is preliminary. The "total width" of the annulus was selected to include all known uncertainties and systematics. The final analysis will reduce this width. All follow-up queries should be addressed to Kevin Hurley (UC Berkeley, khurley@sunspot.ssl.berkeley.edu). The center of the IPN annulus is tabulated below along the segment that intersects the Huntsville error circle. The Distance column is the sky-angle distance between the Huntville location and the sampled position on the arc segment. The position of maximum probability plus the 1-, 2-, & 3-sigma containment probabilities (statistical+systematic) are marked. A detailed description of the format, content, and meaning of this document is given in the URL: http://gcn.gsfc.nasa.gov/gcn/ipn.html (J2000) RA DEC Distance 172.556 55.718 6.17 <=== +3-sigma probability 172.424 55.756 6.09 172.292 55.794 6.00 172.160 55.831 5.92 172.028 55.868 5.84 171.896 55.905 5.75 171.763 55.941 5.67 171.631 55.977 5.59 171.499 56.013 5.51 171.366 56.049 5.43 171.234 56.084 5.35 171.101 56.118 5.26 170.969 56.153 5.18 170.837 56.187 5.10 170.704 56.221 5.02 170.572 56.255 4.94 170.439 56.288 4.86 170.307 56.321 4.78 170.174 56.354 4.70 170.041 56.386 4.62 169.909 56.418 4.54 169.776 56.450 4.46 169.644 56.481 4.38 169.511 56.512 4.30 169.378 56.543 4.22 169.246 56.574 4.15 169.179 56.589 4.11 <=== +2-sigma probability 169.047 56.619 4.03 168.914 56.649 3.95 168.781 56.679 3.87 168.649 56.708 3.79 168.516 56.737 3.72 168.383 56.766 3.64 168.250 56.795 3.56 168.118 56.823 3.48 167.985 56.851 3.41 167.852 56.878 3.33 167.719 56.906 3.25 167.587 56.933 3.18 167.454 56.960 3.10 167.321 56.986 3.02 167.188 57.012 2.95 167.056 57.038 2.87 166.923 57.064 2.79 166.790 57.090 2.72 166.657 57.115 2.64 166.525 57.140 2.57 166.392 57.165 2.49 166.259 57.189 2.42 166.126 57.213 2.34 165.994 57.237 2.27 165.861 57.261 2.19 165.728 57.284 2.12 165.595 57.307 2.04 <=== +1-sigma probability 165.463 57.330 1.97 165.330 57.353 1.90 165.197 57.375 1.82 165.064 57.397 1.75 164.932 57.419 1.68 164.799 57.441 1.60 164.666 57.462 1.53 164.534 57.483 1.46 164.401 57.504 1.39 164.268 57.524 1.31 164.136 57.545 1.24 164.003 57.565 1.17 163.870 57.585 1.10 163.738 57.604 1.03 163.605 57.624 0.96 163.472 57.643 0.89 163.340 57.662 0.83 163.207 57.680 0.76 163.074 57.699 0.70 162.942 57.717 0.63 162.809 57.735 0.57 162.676 57.752 0.51 162.544 57.770 0.46 162.411 57.787 0.41 162.279 57.804 0.38 162.146 57.821 0.35 162.014 57.837 0.33 161.947 57.845 0.33 <=== Max probability 161.815 57.861 0.34 161.682 57.877 0.36 161.550 57.893 0.40 161.417 57.908 0.44 161.285 57.923 0.49 161.152 57.938 0.55 161.020 57.953 0.61 160.887 57.968 0.67 160.755 57.982 0.73 160.622 57.996 0.80 160.490 58.010 0.86 160.357 58.024 0.93 160.225 58.037 1.00 160.093 58.050 1.06 159.960 58.063 1.13 159.828 58.076 1.20 159.695 58.088 1.27 159.563 58.101 1.34 159.431 58.113 1.40 159.298 58.124 1.47 159.166 58.136 1.54 159.034 58.147 1.61 158.901 58.159 1.68 158.769 58.169 1.75 158.637 58.180 1.82 158.504 58.191 1.89 158.372 58.201 1.96 158.240 58.211 2.03 158.174 58.216 2.06 <=== -1-sigma probability 158.041 58.226 2.13 157.909 58.235 2.20 157.777 58.245 2.27 157.645 58.254 2.34 157.512 58.263 2.41 157.380 58.271 2.48 157.248 58.280 2.54 157.116 58.288 2.61 156.984 58.296 2.68 156.851 58.304 2.75 156.719 58.311 2.82 156.587 58.319 2.89 156.455 58.326 2.96 156.323 58.333 3.03 156.190 58.340 3.10 156.058 58.346 3.17 155.926 58.352 3.24 155.794 58.358 3.31 155.662 58.364 3.37 155.530 58.370 3.44 155.398 58.376 3.51 155.265 58.381 3.58 155.133 58.386 3.65 155.001 58.391 3.72 154.869 58.395 3.79 154.737 58.400 3.86 154.605 58.404 3.93 154.473 58.408 4.00 154.341 58.412 4.06 154.209 58.415 4.13 <=== -2-sigma probability 154.077 58.419 4.20 153.944 58.422 4.27 153.812 58.425 4.34 153.680 58.428 4.41 153.548 58.430 4.48 153.416 58.433 4.55 153.284 58.435 4.61 153.152 58.437 4.68 153.020 58.438 4.75 152.888 58.440 4.82 152.756 58.441 4.89 152.624 58.442 4.96 152.492 58.443 5.03 152.360 58.444 5.10 152.228 58.445 5.16 152.096 58.445 5.23 151.964 58.445 5.30 151.831 58.445 5.37 151.699 58.444 5.44 151.567 58.444 5.51 151.435 58.443 5.58 151.303 58.442 5.65 151.171 58.441 5.71 151.039 58.440 5.78 150.907 58.438 5.85 150.775 58.436 5.92 150.643 58.434 5.99 150.511 58.432 6.06 150.379 58.430 6.13 150.247 58.427 6.20 <=== -3-sigma probability -------------------------------- THE END -------------------------------- ///////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 129 SUBJECT: GRB980706 DATE: 98/07/07 00:21:21 GMT FROM: Kevin Hurley at UCBerkeley/SSL K. Hurley, on behalf of the Ulysses GRB team, and C. Kouveliotou, on behalf of the BATSE team, report: We have obtained a refined, but still preliminary IPN annulus for this burst (BATSE #6904). The annulus center is located at (J2000) R.A.=151.981, Decl.=8.780. Its radius is 49.641 +/- 0.026 degrees. A map showing the BATSE, COMPTEL, and IPN locations may be found at http://ssl.berkeley.edu/ipn3/980706. This message may be cited. ///////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 138 SUBJECT: RXTE Observation of GRB 980706 DATE: 98/07/08 03:51:42 GMT FROM: Frank Marshall at GSFC F. E. Marshall (NASA/GSFC) and T. Takeshima (USRA/GSFC), on behalf of the RXTE team, and P. Woods (UAH/MSFC) on behalf of the BATSE team, report the detection of an X-ray source during scans of the Locburst error region for GRB 980706 (BATSE trigger 6904) with the PCA on RXTE. A 4x8 degree region centered on RA=161.82 and DEC=57.52 was scanned during a 2-hour interval starting July 6.781, which is 2.7 hours after the burst. A 90% confidence error region for the source has corners at (RA, DEC) of (165.586, 57.801), (164.897, 55.836), (164.366, 55.890), and (164.993, 57.860). Since this error box intersects the preliminary IPN annulus (GCN Circ. 129), the X-ray source may be the afterglow of the GRB. If so, the afterglow had a flux of about 2 mCrab in the 2-10 keV band 2.9 hours after the burst. The intersection of the error box and the preliminary IPN annulus is centered at (165.137, 57.385),and has a width of about 0.6 deg. in RA and 0.026 deg. in DEC. However, the X-ray source was not detected during two subsequent scans 1.5 hours later indicating either unusual variability (a decay index of at least 3 for an assumed power-law decay) or that the X-ray source is not located in the intersection of the error box and the annulus. The ROSAT-survey source J105825.9+564716, which lies just outside the X-ray error box, is an alternative identification of the X-ray source. In this case, the X-ray source is unrelated to the GRB.