//////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 9603 SUBJECT: XRF 090702: a long soft GRB localized with INTEGRAL DATE: 09/07/02 12:34:25 GMT FROM: Diego Gotz at CEA A. Paizis (IASF-Milano), D.Gotz (CEA-Saclay), S.Mereghetti, (IASF- Milano), Wakiko Ishibashi, C. Ferrigno, M. Beck (ISDC, Versoix), and J. Borkowski (CAMK, Torun) on behalf of the IBAS Localization Team report: A long gamma ray burst with a soft spectrum, and without any detectable signal above 40 keV has been detected by IBAS in the IBIS/ ISGRI data at 10:40:37 U.T. on July 2nd. Its duration is about 10 s and its refined coordinates (J2000) are: R.A.: 175.888 [degrees] DEC.: +11.501 [degrees] with an uncertainty of 2.5 arcmin (90% c.l.). A preliminary analysis gives a peak flux in the 20-200 keV range of about 0.15 ph/cmsq/s (1 s integration time) and a fluence over the same energy range of about 1.5e-7 erg/cmsq. A plot of the light curve will be posted at http://ibas.iasf-milano.inaf.it/IBAS_Results.html This message can be cited. //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 9604 SUBJECT: XRF 090702: Swift-XRT afterglow position DATE: 09/07/03 00:18:55 GMT FROM: Boris Sbarufatti at INAF-IASF-Pa B. Sbarufatti, V. Mangano (INAF-IASFPA), report on behalf of the Swift- XRT team: Swift began observation of the XRF detected by INTEGRAL (Paizis, et al., GCN Circ. 9603) on 2009 July 2 at 14:15 UT, 3.5 hours after the trigger. In the XRT field of view we detect a single faint, uncatalogued source inside the IBIS/ISGRI error circle with a 5.5 sigma significance. The XRT position obtained using a 6ks Photon Counting mode exposure is RA, Dec = 175.89800, 11.50219 which is equivalent to: RA (J2000): 11 43 35.5 Dec (J2000): +11 30 07.9 with an uncertainty of 4.9 arcsec (radius, 90% confidence). This is 0.6 arcmin away from the INTEGRAL IBIS/ISGRI position. The count-rate is (6.8+/-1.2)E-3 counts/s, for a total of 40 observed photons from the source. With the current amount of data we are unable to see if the source is fading. This is an official product of the Swift XRT team. //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 9605 SUBJECT: XRF 090702: VLT imaging DATE: 09/07/03 01:23:47 GMT FROM: Paolo D'Avanzo at INAF-OAB P. D'Avanzo (Univ. Bicocca/INAF-OAB), S. Campana, S. Covino (INAF-OAB), E. Bozzo (ISDC) and L. Stella (INAF-OAR) report, on behalf of a larger collaboration: We observed the field of XRF 090702 (Paizis et al., GCN 9603) with the ESO-VLT equipped with the FORS2 camera in imaging mode. In a first series of R-band images (6 minutes of total exposure time) carried out on Jul 2.9965, we do not see any optical counterpart inside the XRT error circle (Sbarufatti & Mangano, GCN 9604) down to a limiting magnitude of R > 24.2 (3sigma limit, calibrated against USNOB1 catalogue). We note that the GRB position is about 10 deg from the Virgo Cluster. We aknowledge the Paranal staff for their support, in particular C. Ledoux and K. O'Brien. //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 9607 SUBJECT: GRB 090702: UVOT upper limits DATE: 09/07/03 11:13:55 GMT FROM: Samantha Oates at MSSL S. R. Oates (MSSL-UCL) and D. M. Palmer (LANL) report on behalf of the Swift/UVOT team: The Swift/UVOT began observing the field of INTEGRAL GRB 090702, 3.5hrs after the INTEGRAL trigger (Paizis et al., GCN 9603). We do not detect any source at the Swift XRT position (Sbarufatti et al. GCN 9604). The 3-sigma upper limits for the finding chart exposure is: Filter T_start(s) T_stop(s) Exp(s) Mag (3-sigma upper limit) ------------------------------------------------------------- white 14080 20350 971 > 22.72 v 14646 20964 1126 > 21.20 b 13516 25451 1753 > 22.37 u 12951 24855 1796 > 21.89 ------------------------------------------------------------- The quoted upper limits have not been corrected for the expected Galactic extinction along the line of sight of E_(B-V) = 0.039 mag. All photometry is on the UVOT photometric system described in Poole et al. (2008, MNRAS, 383, 627). //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 9609 SUBJECT: XRF 090702: Swift-XRT refined analysis DATE: 09/07/03 18:26:52 GMT FROM: Boris Sbarufatti at INAF-IASF-Pa Sbarufatti B., Mangano V. (INAF-IASFPA) report on behalf of the Swift Team: We have analyzed the Swift-XRT data of XRF 090702 (Paizis, et al., GCN Circ. 9603) comprising 6 ks in Photon Counting (PC) mode from T+16.5 ks to T+25.4 ks. The best position for the X-ray afterglow is the XRT UVOT-enhanced position: RA, Dec = 175.89704, +11.50161 which is equivalent to: RA (J2000): 11h 43m 35.29s Dec (J2000): +11d 30' 05.8" with an uncertainty of 5.0 arcsec (radius, 90% confidence). The light-curve consists of two data points at the level of some 1E-3 counts/s, and shows evidence of a fading behaviour. A power-law extrapolation of the available data indicates a count-rate of 9.4E-5 counts/s at T+48 h. The average spectrum was fitted using Cash statistics with an absorbed power-law model. The absorbing column NH was fixed at the Galactic value of 3.5E20 cm^-2, the photon index is 1.9+/-0.4. The observed (unabsorbed) flux is 2.8(3.0)E-13 ergs cm^-2 s^-1. The C-statistic is 29.3 with 32 bins. The count-rate to flux conversion factor is 4.4E-11. All quoted errors are at 90% confidence level. The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00020106 This circular is an official product of the Swift-XRT team. //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 9614 SUBJECT: XRF 090702 : RTT150 optical observations DATE: 09/07/05 01:59:06 GMT FROM: Alexander Meshcheryakov at IKI A. Meshcheryakov (IKI), I. Khamitov (TUG), R. Burenin, M. Pavlinsky, R. Sunyaev (IKI), Z. Eker (TUG), U. Kiziloglu (METU), E. Gogus (Sabanci Uni.), I. Bikmaev, N. Sakhibullin (KSU/AST) report: We observed the field of XRF 090702 detected with IBIS/INTEGRAL (Paizis et al., GC N 9603;) with Russian-Turkish 1.5-m telescope (RTT150, Bakirlitepe, TUBITAK National Observatory, Turkey), starting at 02 Jul, 18:54 UT, i.e. 8.2h after the burst. We made 2x600s exposures in SDSS r filter. In the combined image we do not detect any sources inside the XRT/SWIFT error circle (Sbarufatti & Mangano, GCN 9604). Using SDSS catalog for photometric calibration, we estimate 3-sigma upper limit for any optical counterpart as m_r > 22.4. //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 9917 SUBJECT: GRB 090702: Skynet/GORT Observations DATE: 09/09/16 20:08:45 GMT FROM: Josh Haislip at U.North Carolina J. Haislip, D. Reichart, L. Cominsky, K. McLin, T. Graves, G. Spear, K. Ivarsen, M. Schubel, A. LaCluyze, A. Foster, J. Moore, A. Oza, J. Styblova, A. Trotter, J. A. Crain, and M. Nysewander report: Skynet observed the INTEGRAL/IBAS localization of GRB 090702 (Paizis et al., GCN 9603) with the 14" GORT telescope at Hume Observatory in California beginning 18.2 hours after the the trigger in I. We do not detect the afterglow (Sbarufatti & Mangano, GCN 9607). Stacking only images that increase the limiting magnitude yields: mean 1-sig. 1-sig. time 3-sig. sys. stat. since lim. cal. cal. cal. trig. tel. exp. fil. mag. stars* unc. unc. (h) (# x s) (mag) (mag) 18.2 GORT 2 x 80 I 17.7 32 SDSS 7 0.051 0.007 * Transformed using Jester et al., 2005, ApJ, 130, 873.