//////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1706 SUBJECT: GRB021125 : A long GRB localized by INTEGRAL DATE: 02/11/26 15:04:05 GMT FROM: INTEGRAL Shift Ops at INTEGRAL A. Bazzano, A. Paizis and the INTEGRAL Science Team report the detection of GRB021125 at 17:58:30 UTC of duration 20 sec in IBIS field of view with ISGRI and PICsIT detectors. The event is confirmed by the SPI anticoincidence system. The most probable preliminary position is RA 19h 47m and DEC +28.1deg. The position uncertainty is entirely systematics and estimated to be 30 arcmin at this early stage of INTEGRAL commissioning. A refined position will be published as soon as possible. The burst peak intensity was about 2-4 Crab in the energy range 15-120 keV. This message is citable. //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1707 SUBJECT: IPN triangulation of GRB021125 (INTEGRAL BURST) DATE: 02/11/26 19:43:26 GMT FROM: Kevin Hurley at UCBerkeley/SSL K. Hurley and T. Cline, on behalf of the Ulysses and Mars Odyssey GRB teams, I. Mitrofanov, D. Anfimov, A. Kozyrev, M. Litvak and A. Sanin, on behalf of the HEND/Odyssey GRB team, W. Boynton, C. Fellows, K. Harshman, C. Shinohara and R. Starr, on behalf of the GRS/Odyssey GRB team, and D. M. Smith, R. P. Lin, J. McTiernan, R. Schwartz, C. Wigger, W. Hajdas, and A. Zehnder, on behalf of the RHESSI GRB team, report: Ulysses, Mars Odyssey-HEND, and RHESSI observed this GRB (GCN1706) at 64710 seconds. As observed by Ulysses, it had a duration of approximately 30 seconds, a 25-100 keV fluence of approximately 8.7E-06 erg/cm2, and a peak flux of approximately 7.8E-07 erg/cm2 s over 0.50 seconds. We have triangulated it to a preliminary, 3 sigma error box whose approximate area is 111. sq. arcmin. and whose coordinates are: RA(2000) DEC(2000) ERROR BOX CENTER: 19 h 47 m 42.76 s 28 o 17 ' 8.06 " ERROR BOX CORNER 1: 19 h 46 m 49.27 s 28 o 9 ' 14.20 " ERROR BOX CORNER 2: 19 h 47 m 47.73 s 28 o 13 ' 9.68 " ERROR BOX CORNER 3: 19 h 47 m 37.78 s 28 o 21 ' 6.43 " ERROR BOX CORNER 4: 19 h 48 m 36.40 s 28 o 25 ' 0.85 " Assuming that the INTEGRAL-IBIS localization is a circle with 30 arcminute radius, this error box lies entirely within it and reduces its area by a factor of about 25. An image will be posted shortly at ssl.berkeley.edu/ipn3/021125. This error box may be improved. //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1709 SUBJECT: Improved IPN error box for GRB021125 DATE: 02/11/26 23:08:11 GMT FROM: Kevin Hurley at UCBerkeley/SSL K. Hurley, on behalf of the Ulysses and Mars Odyssey GRB teams, E. Mazets and S. Golenetskii, on behalf of the Konus-Wind GRB team, D. M. Smith, R. P. Lin, J. McTiernan, R. Schwartz, C. Wigger, W. Hajdas, and A. Zehnder, on behalf of the RHESSI GRB team, I. Mitrofanov, D. Anfimov, A. Kozyrev, M. Litvak and A. Sanin, on behalf of the HEND/Odyssey GRB team, T. Cline, on behalf of the Ulysses, Odyssey, and Konus GRB teams, and W. Boynton, C. Fellows, K. Harshman, C. Shinohara and R. Starr, on behalf of the GRS/Odyssey GRB team, report: This burst (GCN 1706, 1707) was also observed by Konus. We have triangulated it to an improved, but still preliminary 3 sigma error box whose approximate area is 72 sq. arcmin. and whose coordinates are: RA(2000) DEC(2000) ERROR BOX CENTER: 19 h 47 m 25.93 s 28 o 16 ' 0.45 " ERROR BOX CORNER 1: 19 h 46 m 45.23 s 28 o 8 ' 57.88 " ERROR BOX CORNER 2: 19 h 47 m 33.79 s 28 o 20 ' 50.43 " ERROR BOX CORNER 3: 19 h 47 m 18.08 s 28 o 11 ' 10.45 " ERROR BOX CORNER 4: 19 h 48 m 06.73 s 28 o 23 ' 02.41 " This error box is fully contained within the INTEGRAL error circle and overlaps the previous IPN error box (GCN 1707), but about 10 square arcminutes in this new box are not included in the old one. A map showing the two new triangulation annuli, the INTEGRAL error circle, and the old error box, is being posted to ssl.berkeley.edu/ipn3/021125. This error box may be improved. //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1710 SUBJECT: IPN triangulation of GRB021125B (annulus) DATE: 02/11/26 23:26:31 GMT FROM: Kevin Hurley at UCBerkeley/SSL K. Hurley, on behalf of the Ulysses GRB team, E. Mazets and S. Golenetskii, on behalf of the Konus-Wind GRB team, and T. Cline, on behalf of the Ulysses and Konus GRB teams, report: Ulysses and Konus-Wind observed this GRB at 21541 seconds. As observed by Ulysses, it had a duration of approximately 10 seconds, a 25-100 keV fluence of approximately 1.7E-06 erg/cm2, and a peak flux of approximately 7.4E-07 erg/cm2 s over 0.25 seconds. We have triangulated it to a preliminary annulus centered at RA, Decl(2000)= 2.237, -35.258 degrees, whose radius is 85.862 +/- 0.017 degrees (3 sigma ). This annulus may be constrained and/or improved, but as the event was not observed by Mars Odyssey, a small error box cannot be derived for it. //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1712 SUBJECT: IPN triangulation of GRB021125B (two large error boxes) DATE: 02/11/27 21:30:45 GMT FROM: Kevin Hurley at UCBerkeley/SSL K. Hurley, on behalf of the Ulysses GRB team, E. Mazets and S. Golenetskii, on behalf of the Konus-Wind GRB team, T. Cline, on behalf of the Ulysses and Konus GRB teams, and V. Schoenfelder, A. Rau, A. v. Kienlin, G. Lichti G., N. Arend, J.-P. Roques, J. Burkowski, R. Walter, and N. Produit, on behalf of the INTEGRAL GRB team, report: The Konus ecliptic latitude response constrains the arrival direction of this burst (GCN 1710) to those portions of the annulus ( RA, Decl(2000)= 2.237, -35.258 degrees, radius 85.862 +/- 0.017 degrees, 3 sigma) which lie between RA, Decl = 99.3, -16.9 and 125.3, -43.4 degrees, and between RA, Decl = 148.5, -54.2 and 210.7, -55.6 degrees. As this event was observed by INTEGRAL, it may eventually be possible to constrain the annulus further. //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1714 SUBJECT: GRB021125 refined position DATE: 02/11/29 10:46:23 GMT FROM: Nicolas Produit at ISDC A. Gros (CEA-Saclay) and N. Produit (ISDC) on behalf of the INTEGRAL Science Working Team report: The systematic errors on the position of GRB021125 obtained from the IBIS/ISGRI data have been significantly reduced to a radius of 2 arcmin. The resulting new position of the 2 arcmin-radius circle center is 19h 47m 56s, 28° 23' 28" (2000). This circle is fully contained in the previous INTEGRAL error circle (GCN 1706) and partially overlaps the most recent IPN error box (GCN 1709). This message can be cited //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1729 SUBJECT: GRB 021125: Radio Observations DATE: 02/12/09 20:05:35 GMT FROM: Edo Berger at Caltech E. Berger (Caltech) and D. A. Frail (NRAO) report on behalf of a larger collaboration: "On December 8.03 UT we used the VLA at 8.46 GHz to observe the 2-arcmin refined error circle of GRB 021125 (GCN 1714) localized by INTEGRAL (GCN 1706). We do not detect any sources within the error circle down to a 5-sigma limit of 220 microJy. No further observations are planned" This message may be cited.