From scott@milkyway.gsfc.nasa.gov Fri Dec 17 13:32:02 1999 Received: from milkyway.gsfc.nasa.gov (milkyway.gsfc.nasa.gov [128.183.16.143]) by lheawww.gsfc.nasa.gov (8.9.1a/8.9.1) with SMTP id NAA18950 for ; Fri, 17 Dec 1999 13:32:01 -0500 (EST) Received: (from scott@localhost) by milkyway.gsfc.nasa.gov (LHEA9504/950407.s1) id NAA01371; Fri, 17 Dec 1999 13:30:50 -0500 From: Scott Barthelmy Message-Id: <199912171830.NAA01371@milkyway.gsfc.nasa.gov> Subject: GCN/IPN Notice for GRB991216 (Trig=7906) To: jcg@aip.de, grb@space.mit.edu, lewin@space.mit.edu, wsabo@ix.netcom.com, ksahu@stsci.edu, bacodine@lheawww.gsfc.nasa.gov, wam@heag4.jpl.nasa.gov, ilovaisky@obs-hp.fr, jacobsen@alizarin.physics.wisc.edu (AMANDA), crobinso@nsf.gov, paulr@xeus.nrl.navy.mil, wolff@xip.nrl.navy.mil, reba@xeus.nrl.navy.mil, wood@ssd0.nrl.navy.mil, hertz@xip.nrl.navy.mil, lovellette@xip.nrl.navy.mil, jthomson@astro.utoronto.ca, stefan@astro.utoronto.ca, pmv@astro.uva.nl, titus@astro.uva.nl, evert@astro.uva.nl, brian@mso.anu.edu.au (MtStromlo 50inch), grb@galileo.ksp.fi (Finish group), rtt@ss1000.ms.mff.cuni.cz, scott@milkyway.gsfc.nasa.gov Date: Fri, 17 Dec 1999 13:30:50 -0500 (EST) Reply-To: Scott Barthelmy Organization: NASA-GSFC LHEA Phone: 301-286-3106 (voice) (-1684 fax) Pager: 2618712@skymail.com OR 1-800-SKY-PAGE, PIN 2618712 X-Mailer: ELM [version 2.4 PL25] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit TITLE: GCN/IPN/HUNTSVILLE LOCALIZATION NOTICE_TYPE: Updated (based on the BATSE-LOCBURST location) NOTICE_DATE: Fri Dec 17 18:14:57 GMT 1999 TRIGGER_NUM: 7906 GRB_DATE: 99/12/16 GRB_TIME: 16:07:01.36 UT BACO_RA: 82.33d {+05h 29m 19s} (J2000) BACO_DEC: +18.83d {+18d 49' 48"} HUNT_RA: 79.79d {+05h 19m 10s} (J2000) HUNT_DEC: 10.78d {+10d 46' 46"} HUNT_ERR: 2.06 [degees radius, statistical plus systematic] B_H_DELTA: 8.41 [deg] HUNT_SC_AZ: 160.24 [deg] HUNT_SC_EL: -68.84 [deg] {Zen_angle=158.84} SUN_POSTN: 263.74d {+17h 34m 58s} -23.31d {-23d 18' 50"} (Current) SUN_B_DIST: 175.33 [deg] MOON_POSTN: 3.66d {+00h 14m 39s} -3.28d {-03d 16' 53"} (Current) MOON_B_DIST: 80.37 [deg] ANNULUS_RA: 346.5053d {+23h 06m 01s} (J2000) ANNULUS_DEC: 31.2297d {+31d 13' 47"} ANNULUS_RADIUS: 84.916 [deg] ANNULUS_WIDTH: 0.072 [deg] (Total width) COMMENTS: The event began with a weak precursor pulse lasting COMMENTS: about 3 seconds, followed about 15 seconds later COMMENTS: by an intense multi-peaked complex. The main emission COMMENTS: lasted about 20 seconds, but a long decay tail COMMENTS: persisted for another 30 seconds. COMMENTS: This IPN annulus segment is available at T+26.5 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 74.817 7.048 6.17 <=== +3-sigma probability 74.903 7.190 6.02 74.988 7.332 5.86 75.074 7.474 5.71 75.160 7.616 5.56 75.246 7.758 5.41 75.332 7.900 5.26 75.418 8.043 5.11 75.504 8.186 4.96 75.590 8.328 4.81 75.677 8.471 4.67 75.763 8.615 4.52 75.850 8.758 4.38 75.936 8.901 4.24 76.023 9.045 4.10 <=== +2-sigma probability 76.110 9.189 3.96 76.197 9.332 3.82 76.284 9.476 3.69 76.372 9.621 3.56 76.459 9.765 3.43 76.547 9.909 3.31 76.635 10.054 3.19 76.722 10.199 3.07 76.810 10.344 2.96 76.899 10.489 2.86 76.987 10.634 2.76 77.075 10.780 2.67 77.164 10.925 2.58 77.253 11.071 2.51 77.341 11.217 2.44 77.430 11.363 2.39 77.520 11.509 2.34 77.609 11.655 2.31 77.698 11.802 2.29 77.788 11.949 2.28 77.788 11.949 2.28 <=== Max probability 77.788 11.949 2.28 77.878 12.096 2.29 77.968 12.243 2.31 78.058 12.390 2.34 78.148 12.537 2.38 78.239 12.685 2.44 78.330 12.833 2.50 78.421 12.981 2.58 78.512 13.129 2.66 78.603 13.277 2.75 78.694 13.426 2.85 78.786 13.574 2.96 78.878 13.723 3.08 78.970 13.872 3.19 79.062 14.021 3.32 79.154 14.171 3.45 79.247 14.320 3.58 79.340 14.470 3.72 79.433 14.620 3.86 79.526 14.770 4.00 79.619 14.921 4.14 <=== -2-sigma probability 79.713 15.071 4.29 79.807 15.222 4.44 79.901 15.373 4.59 79.995 15.524 4.75 80.090 15.675 4.90 80.184 15.827 5.06 80.279 15.979 5.22 80.375 16.131 5.38 80.470 16.283 5.54 80.566 16.435 5.71 80.662 16.588 5.87 80.758 16.741 6.03 80.855 16.894 6.20 <=== -3-sigma probability -------------------------------- THE END --------------------------------