//////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2505 SUBJECT: GRB 040106 : a long GRB detected with INTEGRAL DATE: 04/01/06 19:13:12 GMT FROM: Sandro Mereghetti at IASF/CNR S Mereghetti, D.Gotz, M. Beck and J. Borkowski on behalf of the IBAS Localization Team, S.Shaw on behalf of the INTEGRAL Science Data Centre and the INTEGRAL Science Working Team report: A GRB lasting about 60 s has been detected with IBAS at 17:55:12 UTC. The GRB has been detected in IBIS/ISGRI data in the 15-200 keV energy band. The coordinates (J2000) are R.A. 11h 52m 17.7Dec. -46deg 47' 15'' with an uncertainty of 3 arcmin. This message can be cited =========================================================================== !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! PLEASE NOTE THAT MY E-MAIL ADDRESS HAS BEEN CHANGED TO: sandro@mi.iasf.cnr.it !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! =========================================================================== Sandro Mereghetti CNR-IASF Istituto di Astrofisica Spaziale e Fisica Cosmica Sezione di Milano ''G.Occhialini'' Tel. +39-02-23699323 via Bassini 15, I-20133 Milano, ITALY Fax +39-02-2666017 sandro@mi.iasf.cnr.it NEW E-MAIL NEW E-MAIL NEW E-MAIL NEW E-MAIL //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2506 SUBJECT: GRB 040106 : peak flux DATE: 04/01/06 19:59:11 GMT FROM: Diego Gotz at IASF-CNR D. Gotz and S. Mereghetti on behalf of the IBAS Localization Team and the INTEGRAL Science Working Team report: Preliminary analysis of GRB 040106 gives a peak flux of about 0.6 photons/cm^2/s (6.5 x 10^-8 erg/cm^2/s) in the 20-200 keV range (integration time of 1 s). This message can be cited. //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2507 SUBJECT: GRB 040106 : Planned XMM-Newton observation DATE: 04/01/06 22:49:15 GMT FROM: Norbert Schartel at XMM-Newton/ESA XMM-Newton will observe GRB 040106 at location (RA=11h 52m 18s, DEC=-46d 47' 14", J2000), starting from 23:05 UT, on January 06, 2004, for an exposure of 45000 seconds. //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2508 SUBJECT: XMM-Newton observation of GRB040106 DATE: 04/01/07 10:27:31 GMT FROM: Norbert Schartel at XMM-Newton/ESA M. Ehle, R. Gonzalez-Riestra and B. Gonzalez-Garcia, from the XMM-Newton SOC report: Quick-Look-Analysis of the first 30 ksec of the XMM-Newton observation of the GRB040106 field (Mereghetti et al., GCN 2505) shows the presence of a bright source in the EPIC-pn and MOS cameras within the INTEGRAL error circle, XMMU J115213.1-464713: R.A. (J2000) = 11h 52m 13.1s Dec. (J2000) = -46deg 47' 13" The EPIC-pn count rate decreased from 0.7 to 0.2 counts/sec during the first 30 ksec of the observation. At this stage of reduction the position error is expected to be less than 10 arcsec. //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2509 SUBJECT: GRB 040106: Optical observations DATE: 04/01/07 10:51:19 GMT FROM: Paul Price at IfA,UH P.A. Price (IfA), N. Morell (La Plata, Argentina), S.R. Kulkarni (Caltech) and J. Fulbright (OCIW) report: We have observed the error circle of the INTEGRAL GRB 040106 (GCN #2505) with the Swope 40-inch telescope at Las Campanas Observatory, commencing at Jan 7.32 UT. Observations consisted of 2x600 sec exposures in the Washington T2 filter (central wavelength ~ 8000A) and cover the entire INTEGRAL error circle to a limiting magnitude of approximately R ~ 21 mag. Within the XMM error circle (GCN #2508), we identify four sources, two of which are present in the Second Digitised Sky Survey images. The other two sources are likely at too faint a level to appear in the DSS2. The coordinates of these are: (a) 11:52:12.56 -46:47:15.3 J2000 R ~ 20.7 mag (b) 11:52:13.87 -46:47:06.5 J2000 R ~ 20.5 mag (edge) Position errors are approximately 0.4". Estimated (statistical) magnitude errors are 0.2 mag. This message may be cited. [GCN OPS NOTE (31 Mar 04): The erroneous "030106" date was changed to the correct "040106" data in the Subject line and in the first line of the body of the Circular.] //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2511 SUBJECT: GRB040106: optical observations with REM+ROSS DATE: 04/01/07 15:38:38 GMT FROM: Nicola Masetti at IASF,CNR,Bologna E. Palazzi, N. Masetti, F.M. Zerbi, E. Molinari, G. Tosti, G. Chincarini, S. Covino, A. Di Paola, D. Fugazza, V. Testa, M. Rodono', L.A. Antonelli, P. Conconi, G. Cutispoto, L. Nicastro, L. Burderi, S. Campana, C. Campeggi, G. Crimi, R. Cunniffe, J. Danzinger, A. Fernandez-Soto, F. Fiore, F. Frontera, G. Gentile, G. Ghisellini, P. Goldoni, G. Israel, B. Jordan, D. Lazzati, D. Lorenzetti, D. Malesani, E. Martinetti, R. Mazzoleni, B. Mc Breen, A. Melandri, S. Messina, E. Meurs, A. Monfardini, G. Nucciarelli, M. Orlandini, J. Paul, E. Pian, P. Saracco, S. Sardone, A. Simoncelli, M. Stefanon, L. Stella, L. Tagliaferri, M. Tavani, S. Vergani and F. Vitali, report: "The REM telescope, currently in commissioning phase, observed the whole error box of the INTEGRAL GRB 040106 (Mereghetti et al., GCN #2505) starting at 04:45 UT of 7 January 2004 (i.e. about 11 hours after the GRB trigger) in V, R and I filters with the ROSS spectrograph/imager. The total exposure time was 180 s for each filter. Observations in the infrared bands with the REMIR camera were not possible at this stage due to technical reasons. When comparing the images with the DSS2, no new source was found within the INTEGRAL error box down to the following limiting magnitudes: V ~ 19.3 R ~ 18.7 I ~ 18.2 Moreover, no source was detected inside the XMM-Newton error circle (Ehle et al., GCN #2508). This message may be cited.". //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2512 SUBJECT: XMM-Newton Images of GRB 040106 DATE: 04/01/08 16:49:02 GMT FROM: Norbert Schartel at XMM-Newton/ESA Preliminary EPIC-pn images and spectra from the XMM-Newton observation of the field of GRB 040106 are available at the home-page of the XMM-Newton Science Operations Centre: http://xmm.vilspa.esa.es/external/xmm_news/items/grb040106/index.shtml RGS spectra of the bright, fading, source within the INTEGRAL error box, XMMU J115213.1-464713 (Ehle et al. GCN 2508) are also shown. //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2514 SUBJECT: GRB040106: Second Epoch Optical Observations DATE: 04/01/09 05:21:47 GMT FROM: Derek Fox at CIT D.B. Fox and S.B. Cenko (Caltech) with R. Phelps (NSF) report: "We have observed the error circle of the Integral GRB 040106 (Mereghetti et al., GCN 2505) on a second occasion with the Swope 40-inch telescope at Las Campanas Observatory, commencing Jan 8.28 UT. Observations consisted of 2x600 s exposures in I-band, reaching R ~ 21 mag. Comparison of these images to our first-epoch T2-band imaging (Price et al., GCN 2509) reveals that the two faint sources (a) and (b) which lie within the region of the XMM X-ray afterglow localization (Ehle, Gonzalez-Riestra & Gonzalez-Garcia, GCN 2508) have not changed in brightness since our first epoch, retaining the same flux to +/- 0.1 mag. The two brighter sources within the XMM localization, which are visible in the archival images of the DSS2, have also not varied significantly in brightness between our two epochs (+/- 0.1 mag). We thus identify no candidate optical counterparts within the XMM localization, and establish a limit of R>~21 on the brightness of any typical such counterpart at either of our epochs of observation." //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2515 SUBJECT: GRB040106, likely optical afterglow DATE: 04/01/09 18:16:40 GMT FROM: Evert Rol at U.Amsterdam Nicola Masetti, Eliana Palazzi (IASF/CNR, Bologna), Evert Rol, Elena Pian (INAF, OA Trieste) and Emanuela Pompei (ESO) on behalf of GRACE, report: We have observed the Integral error circle of GRB 040106 (Mereghetti et al., GCN 2505), on two consecutive nights (6-7 and 7-8 Jan 2004) at the ESO NTT with EMMI in R band. Within the error circle of the XMM-Newton counterpart (Ehle et al., GCN 2508), we find only one source which shows a clear fading behaviour, as follows: mid obsdate, UT filter exptime magnitude err(magn) 07/01/04, 08:33 R 10 min 22.4 0.1 08/01/04, 08:25 R 20 min 23.7 (*) 0.3 * 2 sigma detection The magnitudes are calibrated using the USNO-A2.0 star U0375_14656270, located at coordinates RA = 11:52:18.18, Dec = -46:46:54.3 (J2000), assuming it has magnitude R = 17.1. The magnitude errors are statistical only, i.e. they do not include any zero point errors. All other sources within the XMM-Newton error circle show no sign of fading, confirming the findings by Fox et al. (GCN 2514). We therefore identify the fading source as the likely optical afterglow of GRB 040106. The position of the afterglow is RA = 11 52 12.27 (J2000) Dec = -46 47 15.8 (J2000) with a 0.5 arcsecond error in both coordinates. The NTT images can be viewed at http://www.bo.iasf.cnr.it/~masetti/grb040106.html (source 5 in the images is the afterglow). Further observations at all wavelengths are encouraged. //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2516 SUBJECT: GRB040106, Radio Observations DATE: 04/01/13 17:08:54 GMT FROM: Alicia Soderberg at Caltech M. Wieringa and D. A. Frail (NRAO) report on behalf of a larger collaboration: "Beginning at 2004 Jan. 10 14:15 UT we carried out an observation at a frequency of 8.6 GHz with the Australia Telescope Compact Array (ATCA) centered on the bright XMM X-ray source (GCN# 2508,2512) within the INTEGRAL error circle (GCN#2505). A 160 uJy radio source was detected with 5-sigma significance 1.8 arcsec from center of the XMM error circle at (epoch J2000), R.A.=11:52:13.16, Dec.=-46:47:11.3, with an uncertainty of +/-0.5 arcsec. This radio source is not coincident with any of the optical sources reported earlier (GCN#'s 2509,2511,2514 and 2515). Further observations are planned." //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2520 SUBJECT: GRB040106: refined X-ray transient position DATE: 04/01/21 17:24:04 GMT FROM: Darach Watson at U.of Copenhagen J. A. Tedds (University of Leicester) and D. Watson (University of Copenhagen) report on behalf of a larger collaboration: The XMM-Newton EPIC coordinates were refined by matching the X-ray sources in the field to the USNO-A2 catalogue. The cross-correlation is extremely good and yields a final source position (J2000) for the X-ray afterglow of RA: 11 52 12.43, Dec: -46 47 15.9 The 1 sigma error radius is 0.7" (including the residual 0.5" systematic error from the correlation that is observed in the 1XMM catalogue). This is not precisely consistent with the position of the fading optical source reported by Masetti et al. (GCN 2515). However we note that the position of the star listed as #4 in the image provided by Masetti et al., which corresponds to the USNO-B1 source 0432-0297902 and the relative position of another star in the field (USNO-B1 0432-0297908), both imply a shift of ~1" in their coordinates in R.A. Correcting for this shift we find the optical transient position consistent with the XMM-Newton position given above. This position is not coincident with that of the radio source reported by Wieringa & Frail (GCN 2516). //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2521 SUBJECT: GRB040106, follow-up radio observations DATE: 04/01/21 23:11:56 GMT FROM: Dale A. Frail at NRAO D. A. Frail (NRAO), M. Wieringa (ATNF) and A. M. Soderberg (Caltech) report on behalf of a larger collaboration: "On 2004 Jan. 21.48 UT we carried out follow-up observations with the VLA centered on the XMM X-ray source (GCN# 2508,2512) within the INTEGRAL error circle (GCN#2505). We did not detect the ATCA radio source claimed earlier (GCN#2516) in the preliminary XMM error circle. The VLA flux density limits at the position of the revised XMM error circle (GCN#2520) are 4 +/- 50 microJy and -77 +/- 85 microJy, at 8.46 and 4.86 GHz, respectively. No further observations are planned." //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2527 SUBJECT: GRB 040106 : Planned XMM-Newton observation DATE: 04/02/23 17:20:56 GMT FROM: Norbert Schartel at XMM-Newton/ESA XMM-Newton will observe GRB 040223 at location (RA=16h 39m 34s, DEC=-41d 55' 45", J2000), starting at 17:43:40 UT, on February 23, 2004, for an exposure of 45300 seconds.