To All BACODINE Sites: 25 Feb 95 Attached below is the 3rd in a series of a new capability of BACODINE. BACODINE is distributing the GRB localizations determined by the Interplanetary Network (IPN). Kevin Hurley is the PI for the IPN operation. I have implimented the suggestions people made on the first BACO/IPN notice. Please feel free to continue to make comments/suggestions about the format and content. I am leaving the explanation section below in the first few notices until people get used to what's going on. Since IPN localizations depend on the Ulysses spacecraft (and the GRO-BATSE instrument), the time delays between the GRB and these notices will be in the 1 to 3 day time range (when we eventually get all the procedures down). Clearly, this is much different than the "few seconds" delays of the BATSE-only BACODINE notices, but the idea is to provide a more global service within the BACODINE network of sites and operations. This service will allow for a more speedy analysis of the appropriate sub-region in observations made by wide FOV instruments. Also, the already existing BACODINE distribution network will allow for more timely follow-up observations by instruments that have small FOVs (comparable to IPN arc segments). And in late '96, the IPN network be able to produce small boxes, instead of annuli or annuli segments, when the Russian Mars 96 spacecraft comes online. The format of the BACODINE/IPN notices will be: (1) A header of the pertinant numbers (BACODINE email notice style) suitable for easy parsing by programs. The BACODINE and HUNTSVILLE locations of the GRB are given along with the angular distance between the two. The Huntsville location is preliminary and may differ slightly from the "final" location that will appear in the BATSE catalog. The position of the Sun & Moon are given plus their separations from the BACODINE location as a reference for optical observers. There are four fields for the IPN annulus: the RA & Dec of the center of the annulus, the radius of it, and the total width of the annulus. (2) Some comments describing the status/accuracy of this localization and any particular or noteworthy comments on that specific burst. (3) The arc segment in RA,Dec tabular form. The location along the arc segment that has the maximum probablilty of the GRB location is marked. This is not a rigorous quantitative determination, but a determination made by a human folding in the locations and sizes of the sizes of the BACODINE and HUNTSVILLE error circles. While every effort will be made to choose this location correctly, it should be used by observers only as a guide in making their follow-up observations. Eventually, I would like to be able to mark the table with plus and minus 3 sigma points which can also be used as a guide. Down the road, it may be possible to distribute all of this location information in graphical form via postscript files (or similar). Scott Barthelmy NASA-GSFC, Code 661, Greenbelt, MD 20771 PHONE: 301-286-3106 (work) FAX: 301-286-1684 (1st choice, -1682 2nd choice) EMAIL: scott@xtelab.gsfc.nasa.gov PAGER: 1-800-SKY-PAGE, PIN 2618712 (by phone) PAGER: 2618712@skymail.com (by email, 240 characters max per message) /////////////////////////////////////////////////////////////////////////////// TITLE: IPN/BACODINE/HUNTSVILLE LOCALIZATION TRIGGER_NUM: 3410 DATE_TIME: 95/02/10 02:20:24 UT BACO_RA: 153.55d {+10h 14m 11s} (J2000) BACO_DEC: -32.66d {-32d 39' 28"} HUNT_RA: 154.41d {+10h 17m 37s} (J2000) HUNT_DEC: -27.40d {-27d 24' 12"} B_H_DELTA: 5.31 [deg] SUN_POSTN: 323.26d {+21h 33m 02s} -14.54d {-14d 32' 24"} (Current) SUN_B_DIST: 131.82 [deg] MOON_POSTN: 77.78d {+05h 11m 07s} +19.81d {+19d 48' 20"} (Current) MOON_B_DIST: 89.26 [deg] ANNULUS_RA: 155.4458d {+10h 21m 47s} (J2000) ANNULUS_DEC: +25.7467d {+25d 44' 48"} ANNULUS_RADIUS: 53.778 [deg] ANNULUS_WIDTH: 0.054 [deg] (Total width) 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). This IPN annulus is tabulated below along the segment that intersects a combination of the BACODINE and Huntsville error circles. The position of maximum probability is marked. RA DEC (J2000) 163.208 -27.510 162.762 -27.568 162.315 -27.623 161.867 -27.675 161.418 -27.723 160.969 -27.768 160.519 -27.809 160.069 -27.847 159.618 -27.881 159.167 -27.912 158.715 -27.939 158.263 -27.963 157.811 -27.983 157.358 -28.000 156.906 -28.013 156.453 -28.022 156.000 -28.029 155.546 -28.031 155.093 -28.030 154.640 -28.026 154.187 -28.018 153.734 -28.006 <=== Max probability 153.282 -27.991 152.829 -27.972 152.377 -27.950 151.925 -27.924 151.474 -27.895 151.023 -27.863 150.572 -27.826 150.122 -27.787 149.673 -27.744 149.224 -27.697 148.776 -27.647 148.328 -27.593 147.882 -27.536 147.436 -27.476 146.991 -27.412 146.547 -27.344 146.104 -27.273 145.662 -27.199 145.221 -27.122 144.781 -27.041 144.342 -26.956 --------------------------- THE END ---------------------------