//////////////////////////////////////////////////////////////////////// TITLE: GCN/SAX_WFC BURST POSITION NOTICE NOTICE_DATE: Thu 10 Feb 00 12:53:33 UT NOTICE_TYPE: SAX-WFC Final GRB_DATE: 11584 TJD; 41 DOY; 00/02/10 GRB_TIME: 31446.00 SOD {08:44:06.00} UT GRB_SAX_RA: 29.812d {+01h 59m 15s} (J2000), 29.813d {+01h 59m 15s} (current), 29.290d {+01h 57m 10s} (1950) GRB_SAX_DEC: -40.669d {-40d 40' 07"} (J2000), -40.668d {-40d 40' 05"} (current), -40.911d {-40d 54' 39"} (1950) GRB_SAX_ERROR: 0.034 [deg radius (stat+sys), 1-sigma] GRB_SAX_INTEN: SUN_POSTN: 323.31d {+21h 33m 15s} -14.52d {-14d 31' 21"} SUN_DIST: 62.86 [deg] MOON_POSTN: 18.42d {+01h 13m 41s} +2.29d {+02d 17' 15"} MOON_DIST: 44.20 [deg] COMMENTS: SAX-WFC GRB Coordinates. COMMENTS: LAST BACODINE COMMENTS WERE AN ARTIFACT COMMENTS: OF PROCESSING MACHINE AT BACODINE SITE. COMMENTS: PLEASE IGNORE IT AND REFER TO THE GCN COMMENTS: MESSAGES FOR INFORMATION ABOUT THE BURST. COMMENTS: PLEASE NOTE THAT THE BURST IS NOT FAINT NOR COMMENTS: BADLY LOCATED. COMMENTS: Giangiacomo Gandolfi //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 540 SUBJECT: GRB000210: BeppoSAX GRBM and WFC Detection DATE: 00/02/10 18:35:15 GMT FROM: Giangiacomo Gandolfi at IAS/CNR Frascati GRB000210: BeppoSAX GRBM and WFC Detection M. Stornelli, G. Celidonio, Scientific Operation Centre, Telespazio, Roma, J.M. Muller, J. In't Zand, Space Research Organization of the Netherlands (SRON), Utrecht, L. Amati, TESRE/CNR, Bologna, M. Feroci and G. Gandolfi, IAS/CNR, Roma, report: "The BeppoSAX Gamma Ray Burst Monitor (GRBM) and Wide Field Camera (WFC unit 1) observed a strong gamma-ray burst on February 10.36396 UT. A preliminary analysis reveals a duration of about 20 s in the GRBM, with a peak photon countrate of 22083 cts/s in the 40-700 keV energy band. In the WFC, the duration is the same and the peak flux is 7.4 Crab (2-26 keV). The position of the X-ray counterpart is R.A. = 01h59m14.9s Decl. = -40d40'.14 (equinox 2000.0) with a 99% error radius of 2'. An NFI follow-up is being carried on." //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 542 SUBJECT: GRB000210: possible afterglow detection with BeppoSAX NFI DATE: 00/02/10 21:44:21 GMT FROM: Giangiacomo Gandolfi at IAS/CNR Frascati GRB000210: possible afterglow detection with BeppoSAX NFI E. Costa, G. Gandolfi, L. Piro, IAS/CNR, Roma, M.J.S. Smith, Space Research Organization of the Netherlands (SRON), Utrecht, C. Guidorzi, Universita' di Ferrara, D. Ricci, G. Tassone and A. Coletta, Scientific Operation Center, Telespazio, Roma, report: "A BeppoSAX follow-up of GRB000210 started about 8 hr after the burst. A very preliminary quick look analysis of the first three orbits of the MECS data at SOC shows an object, previously unknown, inside the refined error circle of the WFC, without any evidence of decaying behaviour. The source flux is of the order of 5x10E-13 erg sE-1 cmE-2." //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 543 SUBJECT: IPN triangulation of GRB000210 DATE: 00/02/10 22:01:52 GMT FROM: Kevin Hurley at UCBerkeley/SSL K. Hurley, on behalf of the Ulysses GRB team, M. Feroci and B. Preger, on behalf of the BeppoSAX GRBM team, and T. Cline and E. Mazets, on behalf of the Konus-WIND GRB team, report: GRB000210 was observed by Ulysses, Konus, and the BeppoSAX GRBM. Triangulation gives an annulus centered at RA(2000)= 154.970, Decl.(2000)=-41.463, with radius 84.032 +/- 0.017 degrees. This annulus intersects the BeppoSAX WFC error circle (GCN 540) to form an ~3.7 sq. arcmin. error box whose corners are given by: RA DEC 1 h 59 m 05.32 s -40 o 39 ' 19 " 1 h 59 m 12.96 s -40 o 38 ' 11 " 1 h 59 m 07.35 s -40 o 41 ' 32 " 1 h 59 m 23.85 s -40 o 39 ' 05 " A map has been posted at ssl.berkeley.edu/ipn3/000210. This triangulation is preliminary, and can be refined considerably. //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 544 SUBJECT: Chandra Observations of GRB000210 X-ray Afterglow DATE: 00/02/11 18:49:59 GMT FROM: Mike Garcia at CfA Michael Garcia (Chandra X-ray Center), Luigi Piro (IAS/CNR), Gordon Garmire (Penn State), and Joy Nichols (Chandra X-ray Center) report: The Chandra X-ray Observatory observed the GRB000210 error region using the ACIS-S detector approximately 21 hours after the GRB (GCN 538). Based on a preliminary analysis of a fraction of the data, we find a source in the BeppoSAX WFC error region (GCN 539), with co-ordinates of: RA=01:59:14.78, DEC = -40:39:33.2 (J2000) approximate error radius 2 arc-sec. Further analysis of the complete data set may decrease the error region and should provide a flux estimate. //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 545 SUBJECT: Optical candidate for GRB000210 DATE: 00/02/11 19:49:59 GMT FROM: Javier Gorosabel at LAEFF-INTA, Madrid J. Gorosabel (DSRI, Copehagen) B. L. Jensen, L.F. Olsen, L. Christensen, J. Hjorth, H. Pedersen (U. Copenhagen) M. I. Andersen (U. Oulu) A. O. Jaunsen (U. Oslo) on behalf of a larger European collaboration report: R-band images obtained at the 1.54-m Danish Telescope on Feb 11.03-11.08 contain a faint object located at alfa(2000)=01 59 15.6 delta(2000)=-40 39 33.8 +/- 2". The position of the object is consistent with the X-ray position determined by Chandra (GCN 544). The magnitude of the object is about R~23.1+/-0.5. Optical/IR observations are urgently required. [GCN OPS NOTE (11Feb00): The time-of-observation was incorrect in the distributed version of Circular 545. The time was listed as Feb 2.03-2.08, but the correct time is Feb 11.03-11.08. The statement of "on behalf of a larger European collaboration" was also added. This archived copy has been corrected.] //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 546 SUBJECT: GRB000210, Radio Observations DATE: 00/02/11 20:20:08 GMT FROM: Dale A. Frail at NRAO E. Berger (Caltech) and D. A. Frail (NRAO) report on behalf of a larger collaboration: "On February 10.98 UT we used the VLA to observe a field centered at the position provided by the SAX WFC (GCN 539 and 540). There are no radio sources brighter than 0.26 mJy (4-sigma) within the 2-arcminute radius of the WFC error circle. A limit of 0.13 mJy can be placed on the absence of a radio source within the 2-arcsecond radius error circle (GCN 544) of the Chandra X-ray source. Further observations are planned" This message may be cited. //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 547 SUBJECT: Optical observations of the Chandra X-ray source for GRB000210 DATE: 00/02/11 22:48:16 GMT FROM: Javier Gorosabel at LAEFF-INTA, Madrid J. Gorosabel (DSRI, Copenhagen), B. L. Jensen, J. Hjorth, L. Fogh Olsen, L. Christensen (U. of Copenhagen), M. I. Andersen (U. of Oulo), A. O. Jaunsen (U. of Oslo) report: "We ask that the previous message (GCN #545) concerning an optical detection at the position of the Chandra X-ray source is disregarded. As a matter of fact, We do not detect any object at the X-ray position given by Chandra (GCN #544) in our combined 3000s 1.54-m Danish Telescope R-band image (obtained on Feb 11.05 2000 UT) down to a limit of R~23.3. An image of the field is available at: http://www.astro.ku.dk/~brian_j/grb/grb000210 " //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 548 SUBJECT: Correction to Chandra Position of GRB000210 afterglow DATE: 00/02/13 00:20:58 GMT FROM: Mike Garcia at CfA Michael Garcia (Chandra X-ray Center), Gordon Garmire (Penn State), Luigi Piro (IAS/CNR) report: There is a possible error in the position of the x-ray afterglow of GRB000210 as reported in GCN544. The error is approximately 8 arcsec in the spacecraft Z direction, which in this case is RA. The true position may be 8 arcsec to the East, or: RA=01:59:15.5, DEC = -40:39:33.2 (J2000) We note that U0450_00688875, ra= 01 59 29.84 dec=-40 43 26.0, rmag=15.2 would be correctly located by Chandra if this error is included. Note that this new position agrees with the optical source mentioned in GCN 545 and 547. //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 549 SUBJECT: GRB 000210: BATSE Observations DATE: 00/02/13 21:43:06 GMT FROM: R. Marc Kippen at BATSE/UAH/MSFC R. M. Kippen (University of Alabama in Huntsville) reports on behalf of the BATSE GRB team: GRB 000210 (GCN 540) occurred at a time when the BATSE on-board trigger system was intensionally disabled. However, the burst is clearly detected at Feb 10.36396 UT in the continuous data with 1.024 s resolution. These data show the event consisted of a strong pulse with T50 and T90 durations of 4.1 s and 12.3 s, respectively. The burst's peak flux (50-300 keV; integrated over 1.024 s) and fluence (>20 keV) are 29.9 photons cmE-2 sE-1 and 8.5 x 10E-5 erg cmE-2, respectively---ranking it in the top 1% (3%) of the BATSE GRB flux (fluence) distribution. The spectral hardness is average for bursts of similar duration. The BATSE burst location is consistent with those measured by BeppoSAX (GCN 540) and IPN (SAX/Konus/Ulysses; GCN 543). The lightcurve for this event is available at: http://gammaray.msfc.nasa.gov/~kippen/batserbr/brbr_obs.html -eof- //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 553 SUBJECT: GRB000210 X-ray afterglow DATE: 00/02/14 16:39:43 GMT FROM: Angelo Antonelli at Obs. Astro. di Roma E. Costa, Istituto di Astrofisica Spaziale, CNR, Rome, L.A. Antonelli, Osservatorio Astronomico di Roma, Rome, J. in 't Zand, Space Research Organization Netherlands, Utrecht; M. Stornelli, D. Ricci, M.R. Daniele, M. Capalbi, BeppoSAX Science Operations Center, Telespazio, Rome; M. Feroci, G. Gandolfi, Istituto di Astrofisica Spaziale, CNR, Rome, E. Pian, ITESRE, CNR, Bologna, report: "GRB 000210 was observed with the Narrow Field Instruments (NFI) on board BeppoSAX from Feb. 10.66 UT to 11.98 UT (starting 7.2 hrs after the burst trigger time). In the combined image of both Medium-Energy Concentrator Spectrometers, taken over the whole observation, a point source, showing an unambiguous fading behaviour, is detected with a position of R.A. = 01h59m15.9s, Decl. = -40d39'29" (Eq. 2000.0) and an error circle of 50''. This is consistent with the position given by Chandra in an observation performed during the central part of BeppoSAX observation (GCN #548) and with the position of the optical object reported in GCN #545. In the first 30,000 s of the observation the object flux (2-10 keV) is about 4.5E-13 erg/cmE2/s. In the last 40,000 s of the observation the source has faded of about a factor three but a fainter soft source, located at about 2 arcmin NE from the X-ray afterglow, contributes a flux not negligible. Therefore an evaluation of the flux and the decay law needs a more refined analysis." This message is citable. //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 554 SUBJECT: Optical observations of GRB000210 DATE: 00/02/14 19:09:34 GMT FROM: SG Bhargavi at Indian Inst of Astrophysics SG Bhargavi, Geetanjali Gauba and R Cowsik (Indian Institute of Astrophysics, Bangalore, India 560034) We observed the field of GRB000210 (GCN # 539, 540) using 2.34m Vainu Bappu Telescope (FOV =10') in R and V band filters on 10th and 11th Feb, 2000. On Feb 10, between 14.35-15.18 UT we took 4 frames in R (each 300sec) and a V frame of 600sec. On Feb 11, between 13.66-15.275 UT we took one V (900s) and several R frames of short exposures. Observations were made at airmass > 2.2 and with high background from Moon. At the limit of R=18.0 we donot detect any object at the position of Chandra's x-ray source (GCN # 544, 548) in the combined frames. //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 560 SUBJECT: GRB000210, Radio Observations DATE: 00/02/16 00:52:49 GMT FROM: Dale A. Frail at NRAO D. McConnell, R. Subrahmanyan, M.H. Wieringa, R.M. Wark (ATNF), D. A. Frail (NRAO), E. Berger and S. R. Kulkarni (Caltech) report: "We obtained a 8.2 hour integration with the Australia Telescope Compact Array (ATCA) on February 12.31 UT. In addition, shorter integrations were obtained at 8.46 GHz with the Very Large Array on February 10.99, Feb 14.90, Feb 15.03 UT. Both the ATCA and VLA imaged a field that fully covers the 50-arcsecond error circle of the fading NFI X-ray source, as reported by Costa et al. (GCN 553). There are no radio sources in the NFI above a 4-sigma level on any of the four days. The rms noise levels are 65 microJy (Feb. 10.99), 55 microJy (Feb. 12.31), 35 microJy (Feb. 14.90), and 38 microJy (Feb. 15.03). Adding together the data taken on February 14 and 15, we obtain an upper limit of 55 microJy (2-sigma) for the flux density of any radio afterglow at the position of the Chandra X-ray source (Garcia, Garmire amd Piro GCN 548)." This message may be cited. //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 782 SUBJECT: Chandra Position of GRB000210 DATE: 00/09/01 17:04:52 GMT FROM: Luigi Piro at IAS/CNR Frascati Gordon Garmire (Penn State Universtiy), Luigi Piro (IAS/CNR), Giulia Stratta (IAS/CNR), Michael Garcia(Chandra X-ray Center), and Joy Nichols (Chandra X-ray Center) report: Following the reprocessing of the Chandra observation of GRB000210 by the Chandra X-ray Center (CXC), the best position of the GRB is RA=01h 59m 15.6s DEC= -40d 39' 32.5" (equinox 2000) Using 5 stars detected in X-rays and comparing their positions to the USNO A2 and 2MASS catalog positions, the GRB position is derived to be RA= 01h 59m 15.7s DEC= -40d 39' 32.3" with an estimated error of 1.6" The two measurements are consistent within the error and also in agreement with the optical candidate proposed by Gorosabel et al (GCN n. 545) //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 783 SUBJECT: GRB000210, Optical observations DATE: 00/09/02 13:02:05 GMT FROM: Javier Gorosabel at LAEFF-INTA, Madrid J. Gorosabel (DSRI, Copenhagen), J. Hjorth, B. L. Jensen (U. of Copenhagen), J. P. U. Fynbo, A. O. Jaunsen (ESO), M. I. Andersen (U. of Oulu), S. Holland (U. of Aarhus), and N. Lund (DSRI, Copenhagen) report: "We have carried out optical observations of the corrected Chandra X-ray position of GRB 000210 (Garcia et al., GCN #548) with the 1.54-m Danish Telescope at La Silla, as follows: Date (Aug. 2000 UT) Filter Exp.(s) Seeing(") ---------------------------------------------------- 22.293 - 22.411 R 7x900 2.2 23.226 - 23.290 R 5x900 2.3 24.235 - 24.303 R 4x900 3.0 26.291 - 26.430 V 9x900 1.5 27.213 - 27.236 I 2x900 1.4 28.211 - 28.241 I 2x1200 1.4 29.207 - 29.300 I 7x1200 1.1 30.223 - 30.242 I 1200 1.1 31.213 - 31.245 B 2x1200 1.5 ---------------------------------------------------- The optical source coincident with the Chandra position (Gorosabel et al., GCN #545) is clearly detected in the co-added R, V and I-band images. Astrometry based on the USNO-A2.0 catalogue yields for the object RA(J2000) = 01h 59m 15.60s Dec(J2000) = -40d 39' 32.8" with an uncertainty of +/- 1". The position is consistent with the two updated Chandra positions derived by Garmire et al. (GCN #782). A comparison of the co-added R-band image with the R-band image taken on Feb 11.03 - 11.08 2000 UT (GCN #545) reveals a magnitude variation of 0.03 +/- 0.30 mag. Therefore, the object remains constant in brightness within the photometric errors. We derive a preliminary magnitude of R = 23.5 +/- 0.2 for the object."