//////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1194 SUBJECT: GRB011212 (=H10001): An X-Ray Rich GRB Detected by HETE DATE: 01/12/12 14:19:13 GMT FROM: Don Lamb at U.Chicago GRB011212 (=XRF011212) (=H10001): An X-ray Flash/X-ray Rich GRB Detected by HETE G. Ricker, D. Lamb, and S. Woosley on behalf of the HETE Science Team; N. Butler, G. Crew, J. Doty, G. Monnelly, G. Prigozhin, R. Vanderspek, J. Villasenor, T. Cline, J.G. Jernigan, A. Levine, F. Martel, E. Morgan, J. Braga, R. Manchanda, and G. Pizzichini, on behalf of the HETE Operations and HETE Optical-SXC Teams; N. Kawai, M. Matsuoka, Y. Shirasaki, T. Tamagawa, K. Torii, T. Sakamoto, A. Yoshida, E. Fenimore, M. Galassi, T. Tavenner, C. Graziani, and T. Donaghy, on behalf of the HETE WXM Team; J-L Atteia, M. Boer, J-F Olive, J-P Dezalay, and K. Hurley on behalf of the HETE FREGATE Team; write: The HETE Fregate and WXM instruments have detected and localized a burst at 14642.00 SOD {04:04:02.00} UT on 12 December. The burst was an untriggered event, and appears to be an X-ray rich GRB with a duration of > 80 seconds. In the Fregate 8-85 keV band, the statistical significance was 9.8 sigma. A total of 3724 counts were detected during that interval, corresponding to a fluence of ~6.7 x 10-7 cm-2. The peak flux was ~1.8 x 10-8 ergs cm-2 s-1 (i.e., ~0.5 x Crab flux), assuming a Crab-like spectrum. In the WXM 2-25 keV band, the statistical significance was 6.9 sigma. Based on the WXM data, the best fit location for GRB011019 is: RA = 05h00m05s, Dec = +32o07'39" with a total error radius of 11 arcminutes (90% confidence region). The duration in the WXM 2-10 keV band was > 80 s. A total of ~3500 counts were detected during that interval. Further refinement of the burst localization is in progress. This message is quotable. //////////////////////////////////////////////////////////////////////// TITLE: GCN/RXTE_ASM BURST POSITION NOTICE NOTICE_DATE: Wed 12 Dec 01 18:48:53 UT NOTICE_TYPE: RXTE-ASM Initial TRIGGER_NUM: No correlation with BATSE is possible. GRB_DATE: 12255 TJD; 346 DOY; 01/12/12 GRB_TIME: 14642.21 SOD {04:04:02.21} UT POSITION_TYPE: Box GRB_RXTE_RA: 74.930d {+04h 59m 43s} (J2000), 74.961d {+04h 59m 51s} (current), 74.121d {+04h 56m 29s} (1950) GRB_RXTE_DEC: +32.120d {+32d 07' 12"} (J2000), +32.123d {+32d 07' 22"} (current), +32.046d {+32d 02' 45"} (1950) GRB_ERROR_RA1: 75.000d {+05h 00m 00s} (J2000) GRB_ERROR_DEC1: 31.930d {+31d 55' 48"} (J2000) GRB_ERROR_RA2: 75.020d {+05h 00m 05s} (J2000) GRB_ERROR_DEC2: 32.140d {+32d 08' 24"} (J2000) GRB_ERROR_RA3: 74.930d {+04h 59m 43s} (J2000) GRB_ERROR_DEC3: 32.380d {+32d 22' 48"} (J2000) GRB_ERROR_RA4: 74.840d {+04h 59m 22s} (J2000) GRB_ERROR_DEC4: 32.220d {+32d 13' 12"} (J2000) GRB_RXTE_ERROR: 0.160 [deg radius (stat+sys), 90%] GRB_RXTE_INTEN: 157.00 [mCrab] SUN_POSTN: 259.34d {+17h 17m 21s} -23.08d {-23d 04' 35"} SUN_DIST: 170.16 [deg] MOON_POSTN: 225.20d {+15h 00m 47s} -13.58d {-13d 34' 55"} MOON_DIST: 147.09 [deg] COMMENTS: RXTE-ASM GRB Coordinates. COMMENTS: This is HETE GRB011212. The ASM and HETE positions overlap. COMMENTS: The error box corners COMBINE the ASM and HETE error boxes. COMMENTS: The intensity is averaged over a 90 s dwell that begins COMMENTS: 50 sec before the HETE GRB time. //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1196 SUBJECT: GRB011212: Optical observations DATE: 01/12/13 11:02:19 GMT FROM: Derek Fox at CIT D.W. Fox and P.A. Price (Caltech) with S. Pravdo, E. Helin, K. Lawrence and M. Hicks (NEAT/Palomar) report on behalf of the larger Caltech-NRAO-CARA GRB collaboration: "We have observed the error box of the HETE GRB011212 (GCN #1194) with the Palomar 48-inch telescope on 2001 December 13.15 UT. Our 120s exposure covers the entire HETE + RXTE/ASM joint error box to approximately the DPOSS plate limit (r ~ 21 mag). We detect only one bright object not present on the DPOSS F-plate, which object we identify as an asteroid based on its large proper motion on comparison with an image taken 20 minutes later. No other afterglow candidates are identified within the error-circle. Further observations are planned." This message may be cited. //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1198 SUBJECT: GRB011212, BVRI field photometry DATE: 01/12/13 17:38:52 GMT FROM: Arne A. Henden at USNO/USRA A. Henden (USRA/USNO) reports on behalf of the USNO GRB team: We have acquired BVRcIc all-sky photometry for an 11x11 arcmin field that is approximately centered on the joint HETE/RXTE_ASM error box for GRB011212 (GCN 1194+alert) with the USNOFS 1.0-m telescope on one photometric (but poor seeing) night. Stars brighter than V=13.5 are saturated and should be used with care. We have placed the photometric data on our anonymous ftp site: ftp://ftp.nofs.navy.mil/pub/outgoing/aah/grb/grb011212.dat The current photometry has a potential external zero-point error of about two percent. The astrometry in this file is based on linear plate solutions with respect to USNO-A2.0. The internal errors are less than 100mas. Further calibration of this field will be performed if an optical transient is discovered. //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1201 SUBJECT: GRB 011212: optical observation at Oslo (relayed) DATE: 01/12/14 02:25:43 GMT FROM: Taichi Kato at Kyoto U Here is a report of the optical observation of the field of GRB 011212: GRB 011212: optical observation at Oslo O. Trondal, Oslo, Norway, and H. Yamaoka, Kyushu Univ., report on behalf of VSNET-GRB collaboration: "The field of GRB 011212 (=H10001, GCN 1194, 1196) is observed by O. Trondal with 0.25-m F/4.2 telescope and CCD on Dec. 12.813 - 12.924 UT, i.e. 0.64 - 0.75 days after the burst. The image almost coveres the joint HETE/RXTE_ASM error box except a small Decl. > +32o17'00" region. The limiting magnitude of the combined (25 times 5 minutes) image is rmag about 18.5. We detect no afterglow candidate in the error box." Sincerely Yours, Hitoshi Yamaoka, Kyushu Univ., Japan yamaoka@rc.kyushu-u.ac.jp //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1205 SUBJECT: GRB 011212: optical observation at Asiago DATE: 01/12/15 12:06:32 GMT FROM: Paolo Saracco at Obs.Astro. di Brera P.Saracco,S.Covino,G.Ghisellini,D.Fugazza (AO Brera), N.Masetti,E.Palazzi(ITeSRe, CNR, Bologna), E.Pian (OA Trieste), A.Antonelli,F.Fiore,G.L.Israel,L.Stella (OA Roma), S.Desidera (OA Asiago), on behalf of a larger collaboration, report: We have acquired 1800s exposure(2 images, 900s each) in the R-band of the ~8x8 arcmin field centered on the error box of the HETE GRB011212 (GCN #1194). Observations have been carried out on December 13.15 UT at the Mt. Ekar 1.8 m telescope under no good seeing conditions, the measured FWHM being ~3 arcsec. The nominal limiting magnitude reached in the combined image is R~22.7 (5 sigmas within 3 arcsec aperture). We do not detect any object not present in the DSS plate, with the exception of the asteroid previously quoted in GCN #1196. This message may be cited //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1206 SUBJECT: GRB011212: Optical observations DATE: 01/12/15 15:54:22 GMT FROM: Valery Petkov at Terskol Observatory A.V. Sergeev, V.B.Petkov, V.Ya.Poddubny, N.V.Karpov, S.N.Karpov. Centre Astronomical and Medico-Ecological Researches of Academy of Sci. Observatory at peak Terskol, Russia. We have observed the 8x9 arcmin box of the HETE GRB011212 (GCN #1194) with the 2-m telescope of peak Terskol observatory on 2001 December 12.85 UT. Our 4x300s exposure were centered on coordinates RA=05h00m05s Dec = +32o07'39" . The limiting magnitude of the image is Rmag about 21.5. Visual comparison of the images with the DSS reveals no other obvious new objects, to a limiting magnitude of roughly R~19.5." Further observations are planned. This message may be cited. ----------------------------------------------------------------------- Centre Astronomical and Medico-Ecological Researches of Academy of Sci. Observatory at peak Terskol, Russia. terskol@burbonz.nalnet.ru ----------------------------------------------------------------------- [GCNOPS NOTE: This message was received at 09:02 UT, but it was not distributed because it was emailed to my personal account instead of the gcncirc account.] //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1210 SUBJECT: GRB011212: Optical observations at Gunma DATE: 01/12/20 10:43:51 GMT FROM: Ken ichi Torii at RIKEN K. Kinugasa, O. Hashimoto (Gunma Astronomical Observatory), E. Kambe (National Defense Academy), Y. Urata, M. Kohama, K. Torii, N. Kawai, A. Yoshida (RIKEN), and H. Yamaoka (Kyushu Univ.) We observed the central part of the error region of GRB011212 (GCN #1194) with the Gunma Astronomical Observatory's 150-cm telescope. Starting at 2001 December 12.547 UT, five 120-s exposures were made (last two were affected by a cloud) in R band at a square region within the four corners of (R.A., Dec.) = (04:59:35.5, +32:03:19), (04:59:43.6, +32:13:52), (05:00:33.4, +32:12:09), and (05:00:25.3, +32:01:36) (J2000). Five 120-s exposures were made at the same position from 2001 December 13.545 UT as well as other two fields, which covered the entire HETE + RXTE/ASM joint error region except for a small southernmost part (Decl. < +31:57:20). Combined images of each pointing were as deep as DPOSS plate limit. Comparison with the DPOSS image did not show an optical afterglow candidate brighter than 20.5R mag. //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1212 SUBJECT: GRB 011130 and GRB 011212 - Milagro GeV/TeV Observations DATE: 01/12/21 22:34:45 GMT FROM: Julie McEnery at U. Wisconsin Julie McEnery on behalf of the Milagro collaboration reports: Milagro observed GRB 011130 and GRB 011212 at GeV/TeV energies during the burst durations reported by the HETE WXM (30 seconds and 80 seconds respectively). No evidence for prompt GeV/TeV emission was found from either of these bursts. A preliminary analysis (assuming a differential photon spectral index of -2.4) gives an upper limit on the fluence at the 99% confidence level of: J(E > 2 TeV) < 6 * 10^(-7) erg cm^(-2) for GRB 011130 and, J(E > 2 TeV) < 1 * 10^(-6) erg cm^(-2) for GRB 011212 We expect that TeV photons will be attenuated by pair production with infrared photons in intergalactic space so we also calculate an upper limit on the fluence, assuming a spectrum truncated at 150 GeV. In this case we find an upper limit on the fluence at the 99% confidence level of: J(100-150 GeV) < 5 * 10^(-4) erg cm^(-2) for GRB 011130 and, J(100-150 GeV) < 1 * 10^(-3) erg cm^(-2) for GRB 011212 These upper limits are preliminary and will be refined with further analysis. These limits do not incorporate systematic uncertainties which may be of order 50%. //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1216 SUBJECT: GRB011212, Optical Observations DATE: 02/01/07 23:31:17 GMT FROM: Fredrick J. Vrba at USNO F.J. Vrba (USNO), A.A. Henden (USNO/USRA), and B. Canzian (USNO) report on behalf of the USNO GRB team: We used the USNO 1.3-m telescope to obtain Ic-band imaging at two epochs of a 20(N-S)x40(E-W) arcmin field that is approximately centered on the joint HETE/RXTE_ASM error box for GRB011212 (GCN 1194+alert). The registration covers approximately 95% of the error box, with only 4 arcmin in declination of its southern tip missed. Observations on both nights consisted of six 10 minute integrations using a Site 2Kx4K CCD and were calibrated photometrically using several stars in the field from Henden (GCN 1198). Observations were obtained on UT 2001 Dec 13.294-13.351 (1.125-1.182 days after the burst) with the combined frames reaching a limiting magnitude of Ic < 21.6 and on UT 2001 Dec 14.207-14.281 (2.038-2.112 days after the burst) reaching a limiting magnitude of Ic < 21.9 (due to better seeing than on the previous night). The combined frames from each night were blinked and the entire 20x40 arcmin FOV was searched with the result that no fading objects were found. The GRB position (at l ~ 172 deg, b ~ -6 deg) is a region of moderately high Galactic extinction, with E(B-V) ranging from 0.71 to 0.84 at the center and corners of the error box based on the dust maps of Schlegel et al. (ApJ, 500, 525). Assuming a normal extinction law, this implies a range of A_I of about 1.4-1.6 mag. Our observations thus place an apparent upper limit of Ic > 21.6 or an extinction-corrected limit of Ic > 20.0-20.2 at 1.125-1.182 days after the burst for an Ic-band counterpart to GRB011212. These results may be cited. //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1324 SUBJECT: GRB011212: Optical Observations DATE: 02/04/03 17:11:02 GMT FROM: George Ricker at MIT GRB011212: Optical Observations A. Dullighan, G. Monnelly, G. Ricker, R. Vanderspek, N. Morgan (MIT); and D. Tholen (U.Hawaii) write: We have observed the error box of the HETE GRB011212 (GCN #1194) with the Baade 6.5m telescope at Magellan on 2001 December 14.17 UT (Epoch 1) and December 15.17 UT (Epoch 2) using the MagIC CCD detector. Twelve 360s R-band exposures were used to mosaic the entire HETE and RXTE/ASM joint error box on each night. Both nights had a seeing of 0.7" with a limiting magnitude of 24.5, except for the last half of the second night when the seeing decreased slowly to 1.3", with a limiting magnitude of 24.0 on the last frame. Third epoch observations were made with the University of Hawaii 2.2m telescope on Mauna Kea on 2002 February 16.33 and 17.38 UT. Three frames were used to mosaic the error box each with three 600s VR-band exposures under conditions of 1.3" seeing, giving a limiting magnitude of 24.5 after summing. Aperture photometry was performed on all objects detected in the Epoch 1 images and then again at the same positions in the later epochs. The absolute magnitude of each source was calculated using a nearby USNO catalog star: for each source, the same calibration star was used in all epochs, and the quoted error in the magnitude does not include the uncertainty in the magnitude of the calibration star. Comparison with Epoch 3 is complicated by the fact that it is in VR-band, whereas Epochs 1 and 2 are in R-band. Four sources were determined to have faded between both Epochs 1 and 2 and between Epochs 1 and 3. Their positions and magnitudes are listed below. Sources 2, 3, and 4 faded to near the detection limit in Epoch 2, and to below the detection limit in Epoch 3. The observed fading and upper limits are consistent with a temporal power law decay index between -1 and -2, except for source 1 in Epoch 3, but this flattening of the decay could be due to an underlying galaxy. grb event: 2001 December 12.1695 UT Epoch 1: 2001 December 14.17 2.0 days after Epoch 2: 2001 December 15.17 3.0 days Epoch 3: 2002 February 16.33 66.2 days 2002 February 17.38 67.2 days Fading Sources RA Dec Epoch 1 m(R) Epoch 2 m(R) Epoch 3 m(VR) 1 4:59:58.1 +32:02:57 23.14 +/- 0.12 23.89 +/- 0.22 24.08 +/-0.24 2 4:59:59.4 +32:03:43 23.80 +/- 0.18 24.65 +/- 0.39 > 24.5 3 4:59:59.0 +32:09:04 23.75 +/- 0.18 24.80 +/- 0.48 > 24.5 4 4:59:39.5 +32:08:34 23.38 +/- 0.12 24.41 +/- 0.38 > 24.5 Finder charts have been prepared of the four sources from the Epoch 1 observations at http://space.mit.edu/HETE/Bursts/GRB011212. The charts contain the source, marked by crosshairs, a bright star (B) from the USNO catalogue, and a constant star (C) of comparible magnitude to the source. The charts have a width and height of 33 arcseconds in RA and Dec. North is up and East is to the left. Source# m(R) Star B m(R) Star C m(R) 1 23.14 +/- 0.12 18.8(USNO) 23.65 +/- 0.15 2 23.80 +/- 0.18 16.9(USNO) 23.59 +/- 0.15 3 23.75 +/- 0.18 14.4(USNO) 23.48 +/- 0.14 4 23.38 +/- 0.12 16.8(USNO) 23.11 +/- 0.09 This message may be cited.