//////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2446 SUBJECT: GRB 031111, optical observations DATE: 03/11/13 17:13:11 GMT FROM: Alberto Castro-Tirado at Inst.de Astro. de Andalucia S. Fernández-Acosta (IAC, Tenerife), S. Guziy, V. Casanova, A. de Ugarte, J. Gorosabel and A. J. Castro-Tirado (IAA-CSIC, Granada), report: "We have obtained a mosaic of images (3 fields) covering the entire IPN error box for GRB 031111 (Hurley et al. GCN 2443) with the 0.8-m IAC80 telescope at Observatorio del Teide starting on Nov 13.07 UT (31.7-h after the GRB). None of the co-added images (4 x 600-s exposure time for each field) reveals any new (or strongly variable source) when comparing with the Digital Sky Survey (II epoch)". //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2447 SUBJECT: GRB 031111: Optical observations DATE: 03/11/13 23:26:05 GMT FROM: Paul Price at RSAA, ANU J. Silvey, D. Allen, R. Canterna (U. of Wyoming) and P.A. Price (IfA) report on behalf of the FUN GRB collaboration: We observed the error box of GRB 031111 (Hurley et al., GCN #2443) with the RBO 0.6m telescope. Exposures consisted of 28 individual 300 sec exposures in I-band under cloudy conditions. Our images cover an estimated 98% of the error box at a mean epoch of 2003 Nov 13.2 UT (1.5 days after the GRB), down to an estimated limiting magnitude of R ~ 18.5 mag (on comparison with USNO-A2.0). We do not detect any optical afterglow candidate on visual comparison with the DSS 2 N plate. No further observations of this GRB are planned. This message may be cited. //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2450 SUBJECT: GRB 031111, Radio observations DATE: 03/11/17 21:29:41 GMT FROM: Dale A. Frail at NRAO A. M. Soderberg and D. A. Frail (NRAO) report on behalf of a larger collaboration: "Using the VLA at 4.9 GHz, we imaged the entire IPN error box (GCN#2443) of GRB 031111 (HETE Trigger 2924) on November 14.52 UT with the Very Large Array. The typical rms noise on the image was was 77 uJy. We detect no sources greater than 5 sigma inside the error region. No further observations are planned." //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2456 SUBJECT: GRB031111A, prompt optical observations DATE: 03/11/28 12:41:15 GMT FROM: Rene Hudec at AIO Martin Jelinek, Petr Kubanek, Martin Nekola, Rene Hudec & BART team, Astronomical Institute Ondrejov, report: Robotic system BART (Ondrejov Observatory) observed the error box of GRB031111A (HETE 2924) using its two WF cameras only 30s after receiving the coordinates. Overall time since GRB was 70 minutes. Most of the obtained images were overexposed due to nearby moon, but at images taken at 2003 Nov 11, 3h20, 3h56, 4h02, 4h08 and 4h14 after burst, no new object in comparison with GSC was identified; we estimate the limiting magnitude I about 13 within the combined HETE/IPN error box (cf. GCN 2443). The corresponding image is posted at http://lascaux.asu.cas.cz/~mates/031111A.jpg //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2524 SUBJECT: GRB031111, optical observations DATE: 04/02/03 22:16:37 GMT FROM: Adalberto Piccioni at Astronomy, Bologna U. A.Piccioni, C.Bartolini, A.Guarnieri (Bologna University), P.Ferrero and G.Pizzichini,(IASF-CNR, Sezione di Bologna) and J. Casares (IAC, Tenerife) report: During the nights Nov 13, 14 and 15, 2003 we observed the error box of GRB031111 (Hete burst H2925, Hurley et al., GCN #2443) in R band with the 1m ESA OGS telescope (operated on the island of Tenerife by Instituto de Astrofisica de Canarias at the Observatorio del Teide), and the IAC CCD camera. The initial HETE-WXM field was divided in 9 overlapping subfields. With the exception of about 7% of the area at the corners, the full final HETE-IPN error box was observed. The images intersecting the error box were selected, and we obtained: 13 images x 600 sec on Nov. 13.14 UT (mean epoch) 12 images x 600 sec on Nov. 14.16 UT (mean epoch) 5 images x 600 sec on Nov. 15.04 UT (mean epoch) Our coadded images of subsequent nights attained just the limit of POSS-II, and by comparison we can state that no new object is present. Within the same limit and on a time scale of 3 days we do not detect any variable object with amplitude > 0.3 mag. A few selected images, the observation log and a short comment are available in our public account; the coordinates to login (only by ssh or sftp) are: hostname ermione.bo.astro.it username publicGRB password GRB_bo directory GRB031111 This message may be cited.