GCN OPS NOTE: This automatically generated file contains messages fro three (3) different GRBs: 030501A, 030501B, and 030501C. //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2183 SUBJECT: GRB030501 localized by INTEGRAL DATE: 03/05/01 07:35:43 GMT FROM: Sandro Mereghetti at IASF/CNR S. Mereghetti, D. Gotz, J. Borkowski on behalf of the IBAS Localization Team, S. Shaw and T. Courvoisier on behalf the INTEGRAL Science Data Centre and the INTEGRAL Science Working Team report the detection of a GRB at 03:10:18 UTC at coordinates RA 19h 05m 30s DEC +06deg 18' 26'' (J2000) with an uncertainty of 3 arcmin radius. The burst lasted about 40 seconds. //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2186 SUBJECT: IPN triangulation of GRB030501B (annulus) DATE: 03/05/01 16:30:27 GMT FROM: Kevin Hurley at UCBerkeley/SSL K. Hurley, on behalf of the Ulysses GRB team, A. von Kienlin, G. Lichti, and A. Rau, on behalf of the INTEGRAL SPI-ACS GRB team, and E. Mazets and S. Golenetskii, on behalf of the Konus-Wind GRB team,report: Ulysses, INTEGRAL (SPI-ACS), and Konus-Wind observed this GRB at 04637 seconds. As observed by Ulysses, it had a duration of approximately 8 seconds, a 25-100 keV fluence of approximately 3.5E-06 erg/cm2, and a peak flux of approximately 7.6E-07 erg/cm2 s over 0.25 seconds. We have triangulated it to a preliminary annulus centered at RA, Decl(2000)= 332.708, -37.556 degrees, whose radius is 76.840 +/- 0.037 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: 2187 SUBJECT: IPN triangulation of GRB030501 (IBIS event; annulus) DATE: 03/05/01 19:01:18 GMT FROM: Kevin Hurley at UCBerkeley/SSL K. Hurley, on behalf of the Ulysses GRB team, and A. von Kienlin, G. Lichti, and A. Rau, on behalf of the INTEGRAL SPI-ACS GRB team, report: Ulysses and INTEGRAL (SPI-ACS) also observed this burst (GCN 2183). As observed by Ulysses, it had a duration of approximately 75 seconds, a 25-100 keV fluence of approximately 1.1E-06 erg/cm2, and a peak flux of approximately 4.9E-07 erg/cm2 s over 0.25 seconds. Because this event was quite weak, these parameters are uncertain by a factor of about 2. We have triangulated it to a preliminary annulus centered at RA, Decl(2000)= 332.536, -37.604 degrees, whose radius is 61.259 +/- 0.294 degrees (3 sigma ). This annulus is consistent with, but does not constrain, the IBIS localization given in GCN 2183. This annulus may be improved. //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2188 SUBJECT: GRB 030501: TAROT possible candidate counterpart DATE: 03/05/01 19:55:10 GMT FROM: Michel Boer at CESR-CNRS Michel Boer and Alain Klotz (CESR/CNRS/UPS), on behalf of the TAROT team report: We observed the localisation of GRB 030501 given by INTEGRAL (GCN Circ. 2183). The observations started at 3h10m37.6s, less than 20 seconds after the burst trigger, while it was still active. We do detect an object in the INTEGRAL error box which is not present on the DSS. The position of the new source is RA = 19h05m37.9s DEC = +6d18'51" with a preliminary uncertainty of 3 arcsec. On our 14, 30s duration, images the flux seems constant in first approximation, at an R magnitude of 14.9 +- 0.2. Hence the new source may be a variable star, detected seremdipitously in high state. Work is still in progress on our images to investigate the nature of this object. A preliminary report and finding chart are available at the following URL: http://www.cesr.fr/~klotz/grb030501/ This message is quotable //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2189 SUBJECT: GRB030501: TAROT candidate afterglow present in archival images DATE: 03/05/01 21:06:23 GMT FROM: Derek Fox at CIT D. Fox (Caltech) reports: "The candidate GRB030501 optical afterglow of Boer & Klotz (GCN 2188) is present in archival images of the Second Palomar Optical Sky Survey (XDSS) and the Two-Micron All-Sky Survey (2MASS). Although the object, which appears to be a star, is undetected in the XDSS B-band image, and faint in the XDSS R-band image, it is well-detected in the XDSS I-band image and extremely bright (among the brightest stars in the near field) in 2MASS J, H, and Ks images. These archival images may be viewed at the web page: http://www.astro.caltech.edu/~derekfox/grb030501/tarot.html We conclude that the object is not the optical afterglow of GRB030501. We also note in passing that the optical extinction in this field, very near the Galactic disk, is extremely high, E(B-V) = 14.8 mag from the dust maps of Schlegel, Finkbeiner, & Davis (1998). Such highly-reddened objects are thus to be expected." //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2194 SUBJECT: GRB030501B triangulation (single error box) DATE: 03/05/02 11:10:39 GMT FROM: Dmitry Frederiks at Ioffe Institute S. Golenetskii, E. Mazets, V. Pal'shin, and D. Frederiks on behalf of Konus-Wind and Helicon/Coronas-F teams, T. Cline, on behalf of the Ulysses and Konus GRB teams, K. Hurley, on behalf of the Ulysses GRB team, and A. von Kienlin, G. Lichti, and A. Rau, on behalf of the INTEGRAL SPI-ACS GRB team, report: GRB030501B was detected by Konus-Wind at 01:17:21.824 UT and Helicon-Coronas-F at 01:17:20.607 UT. We have triangulated it to a preliminary annulus centered at RA(2000) = 224.210 deg, Decl(2000) = -21.142 deg, Radius = 81.01 +/- 0.68 degrees (3 sigma ). This annulus intersects the IPN annulus (GCN 2186) to form two error boxes, only one of which has the correct ecliptic latitude. Preliminary 3 sigma error box has approximate area of 400 sq. arcmin : RA(2000) Dec(2000) ERROR BOX CENTER: 290.651 28.413 ERROR BOX CORNER 1: 291.282 28.814 ERROR BOX CORNER 2: 289.984 28.071 ERROR BOX CORNER 3: 290.026 28.007 ERROR BOX CORNER 4: 291.324 28.750 //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2199 SUBJECT: GRB030501 triangulation (correction to GCN 2194) DATE: 03/05/03 15:48:27 GMT FROM: Dmitry Frederiks at Ioffe Institute S. Golenetskii, E. Mazets, V. Pal'shin, and D. Frederiks on behalf of Konus-Wind and Helicon/Coronas-F teams report Data reported in GCN 2194 were affected by error in time delay. Correct Konus-Wind - Helicon annulus is: RA(2000) = 224.210 deg, Decl(2000) = -21.142 deg, Radius = 73.23 +/- 0.70 degrees (3 sigma ). This annulus intersects the IPN annulus (GCN 2186) to form two error boxes, only one of which has the correct ecliptic latitude. Preliminary 3 sigma error box has approximate area of 400 sq. arcmin : RA(2000) Dec(2000) ERROR BOX CENTER: 283.581 23.875 ERROR BOX CORNER 1: 284.167 24.337 ERROR BOX CORNER 2: 284.212 24.275 ERROR BOX CORNER 3: 283.001 23.410 ERROR BOX CORNER 4: 282.956 23.472 Dmitry Frederiks [aka Fred] ------------------------------------------------------- Lab for High Energy Astrophysics, Space Research Dept, A.F.Ioffe Phys.-Tech. Institute, St.Petersburg, Russia ------------------------------------------------------- //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2200 SUBJECT: GRB030501C triangulation (annulus) DATE: 03/05/03 16:04:38 GMT FROM: Dmitry Frederiks at Ioffe Institute S. Golenetskii, E. Mazets, V. Pal'shin, and D. Frederiks on behalf of Konus-Wind and Helicon/Coronas-F teams, T. Cline on behalf of the Konus GRB team, report: A short hard GRB030501C was observed by Konus-Wind at 20:44:50.263 and by Helicon/Coronas-F at 20:44:49.387. We have triangulated it to a preliminary annulus: RA(2000) = 224.122 deg, Decl(2000) = -21.154 deg, Radius = 80.65 +/- 0.34 degrees (3 sigma ). //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2201 SUBJECT: GRB030501 observation report DATE: 03/05/04 10:40:35 GMT FROM: Eran Ofek at Tel Aviv U. E. O. Ofek, Y.-J. Choi, A. Gal-Yam, Y. Lipkin (Wise observatory, TAU) report: We have observed the full error box of GRB030501 (Mereghetti et al. 2003, GCN 2183) using the Wise observatory 1m telescope + SITe CCD camera, starting 2003, May 2nd, 00:05 UT (16.5 hours after the burst). Two 600s R-band frames were obtained. Comparison of the images with the POSS-II E plate reveals no new optical sources, to a limiting magnitude of R=20.0, within the INTEGRAL error circle. //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2202 SUBJECT: GRB030501, optical observation DATE: 03/05/04 21:57:48 GMT FROM: Vasilij Rumjantsev at CrAO V.Rumyantsev, E.Pavlenko (CrAO), A.Pozanenko (IKI) report: We have imaged the error box of GRB030501 (Mereghetti et al. 2003, GCN 2183) with AT-64 telescope of CrAO. Several unfiltered images were taken on May, 1 21:59-23:12 (18.8 hours after GRB) and May, 3 22:36-23:34 (2.8 days after GRB). Visual comparison with DSS-2I and comparison of the combined images in different epochs (May 1 and May 3) reveals no new or fading objects within GRB error box. Log of observations is following: Mid time exposure limit (3 sigma) 01.93200 17x120 20.1 03.96599 21x120 20.0 The combined image of May, 1 can be found in http://grb.rssi.ru/GRB030501/ This message may be cited. //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2224 SUBJECT: GRB 030501: final TAROT limits DATE: 03/05/10 17:08:47 GMT FROM: Michel Boer at CESR-CNRS Alain Klotz and Michel Boer (CESR/CNRS/UPS), on behalf of the TAROT team report : We co-added 25 unfiltered 30s duration frames, taken between 20s and 17min after GRB 030501 (Mereghetti et al., GCNC 2183). We do not detect any new source up to the limiting magnitude of R=18.0 . The source reported in GCN Circ. 2188 is a bright infrared source as indicated by Fox et al (GCNC 2189). It was detected by TAROT because of its residual sensitivity to IR for the unfiltered images. The data will be soon available on the TAROT site, and are already accessible through the following URL : http://www.cesr.fr/~klotz/grb030501 This message is citable.