//////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1639 SUBJECT: IPN triangulation of GRB021016 (small error box) DATE: 02/10/16 22:06:48 GMT FROM: Kevin Hurley at UCBerkeley/SSL K. Hurley and T. Cline, on behalf of the Ulysses and HETE GRB teams, and G. Ricker, J-L Atteia, N. Kawai, D. Lamb, S. Woosley, J. Doty, R. Vanderspek, J. Villasenor, G. Crew, G. Monnelly, N. Butler, J.G. Jernigan, A. Levine, F. Martel, E. Morgan, G. Prigozhin, J. Braga, R. Manchanda, G. Pizzichini, Y. Shirasaki, C. Graziani, M. Matsuoka, T. Tamagawa, K. Torii, T. Sakamoto, A. Yoshida, E. Fenimore, M. Galassi, T. Tavenner, T. Donaghy, M. Boer, J-F Olive, and J-P Dezalay, on behalf of the HETE GRB team, report: Ulysses and HETE-FREGATE observed this GRB at 37740 seconds (HETE 2397). As observed by Ulysses, it had a duration of approximately 50 seconds, a 25-100 keV fluence of approximately 3.7E-6 erg/cm2, and a peak flux of approximately 3.8E-07 erg/cm2 s over 0.50 seconds. We have triangulated it to a preliminary, 3 sigma annulus centered at RA, Decl= 357.102, -36.223 degrees, whose radius is 83.633 +/- 0.057 degrees. This annulus intersects the one-dimensional HETE WXM error box (GCN/HETE Burst Position Notice, Sequence Number 4) to form an error box whose approximate area is 50 sq. arcmin. and whose coordinates are: RA(2000) DEC(2000) ERROR BOX CENTER: 0 h 33 m 43.62 s 46 o 47 ' 16.00 " ERROR BOX CORNER 1: 0 h 31 m 42.34 s 46 o 54 ' 04.11 " ERROR BOX CORNER 2: 0 h 32 m 47.71 s 46 o 45 ' 23.28 " ERROR BOX CORNER 3: 0 h 34 m 39.74 s 46 o 49 ' 13.78 " ERROR BOX CORNER 4: 0 h 35 m 44.71 s 46 o 40 ' 25.61 " This error may be improved. //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1640 SUBJECT: IPN triangulation of GRB021016 (area corrected) DATE: 02/10/16 22:22:52 GMT FROM: Kevin Hurley at UCBerkeley/SSL The area of the error box in GCN 1639 is approximately 200 sq. arcmin., not 50 sq. arcmin. //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1641 SUBJECT: GRB021016(=H2397): A Long GRB Localized by HETE DATE: 02/10/17 02:53:08 GMT FROM: Don Lamb at U.Chicago C. Graziani, Y. Shirasaki, M. Matsuoka, T. Tamagawa, K. Torii, T. Sakamoto, A. Yoshida, E. Fenimore, M. Galassi, T. Tavenner, and T. Donaghy, on behalf of the HETE WXM Team; G. Ricker, J-L Atteia, N. Kawai, D. Lamb, and S. Woosley on behalf of the HETE Science Team; J. Villasenor, R. Vanderspek, J. Doty, G. Crew, G. Monnelly, N. Butler, T. Cline, J.G. Jernigan, A. Levine, F. Martel, E. Morgan, G. Prigozhin, G. Azzibrouck, J. Braga, R. Manchanda, and G. Pizzichini, on behalf of the HETE Operations and HETE Optical-SXC Teams; M. Boer, J-F Olive, J-P Dezalay, and K. Hurley on behalf of the HETE FREGATE Team; write: At 10:29:00.75 UTC (37740.75 s UT) on 16 Oct 2002, the HETE FREGATE and WXM instruments detected event H2397, a long GRB. The burst occurred inside the FREGATE FOV, but at 35 degrees off the WXM boresight and illuminated only two of the twelve wires of the WXM. Ground analysis of the WXM data for the burst produced a location in the X-direction from the shadow pattern of the coded aperture mask on these two wires, and a location in the Y-direction from geometrical constraints. A final WXM location was reported in a GCN Notice at 20:18:15 UT. The WXM localization SNR in the X-detector was 6. The WXM location can be expressed as a 90% confidence rectangle that is approximately 14 arcminutes in width and 11 degrees in length. The corners of the rectangle lie at the following J2000 coordinates: RA = 00h 38m 35s, Dec = 45o 57' 47" RA = 23h 43m 26s, Dec = 52o 18' 43" RA = 23h 42m 46s, Dec = 52o 07' 30" RA = 00h 39m 30s, Dec = 46o 09' 18". GCN Circulars No. 1639 and 1640 reported a combined HETE/Ulysses IPN diamond-shaped localization region that has an area of approximately 200 sq. arcminutes. In the FREGATE 8-40 keV and the WXM 2-25 keV bands, the burst had a duration of ~90 seconds. A light curve and skymap for GRB021016 are provided at the following URL: http://space.mit.edu/HETE/Bursts/ This message is citable. //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1644 SUBJECT: GRB021016, optical observations DATE: 02/10/18 17:32:05 GMT FROM: Arne A. Henden at USNO/USRA D. T. Durig, E. W. Shroyer, P. P. Shukla (Cordell-Lorenz) and D. West (West Skies) report on behalf of the AAVSO International GRB network: We have observed the entire error box for GRB021016 (Hurley et al. GCN 1639; Graziani et al. GCN 1641) on two nights. Comparing against the DSS and USNO-A2.0, no new object is seen inside the error box. The FITS images are available through the AAVSO. CV indicates unfiltered (clear), V-band zeropoint; CR indicates unfiltered (clear), R-band zeropoint. UTD start exposure filt telescope lim_mag 021017 01:44 45secx32 CV 0.20m West 18.5 021017 03:18 300secx3 CR 0.30m Durig 19.5 021018 03:30 300secx3 CR 0.30m Durig 20.0 //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1646 SUBJECT: GRB 021016, optical observations DATE: 02/10/21 14:23:45 GMT FROM: Sylvio Klose at TLS Tautenburg S. Klose and U. Laux (Thueringer Landessternwarte Tautenburg) report: The error box of GRB 021016 (Hurley et al., GCN 1639) was imaged in R and I on October 18/19 and 20/21 (2.3 and 4.3 days after the burst trigger, respectively), using the Tautenburg Schmidt telescope equipped with the Schmidt focus CCD camera (2k x 2k; FOV 42 x 42 arcmin). Several frames were taken (2 min exposure time each). The limiting magnitude of the combined frames of each observing run is about R=20.5 +/- 0.5 and I=20.5 +/- 0.5. We do not find any potential GRB afterglow, neither in the R-band nor in the I-band. This message can be cited. //////////////////////////////////////////////////////////////////////// TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1681 SUBJECT: GRB 021016: Optical Observations DATE: 02/11/11 20:34:49 GMT FROM: Melissa Nysewander at UNC,Chapel Hill J. Schaefer, S. Savage, S. Hwang, R. Canterna (U. Wyoming), M. Nysewander, and D. Reichart (U. North Carolina) report: We observed the entire ~200 square arcminute error box of GRB 021016 (GCN 1639, 1640, 1641) with the 0.6-meter Red Buttes Observatory telescope beginning 15 hours, 39 hours, and 63 hours after the burst. We integrated without filter for ~1 hour per pointing x three pointings for each epoch. Visual comparison between our first epoch and the DSS on the 17th revealed no obvious counterpart to the limiting magnitude of the DSS. Visual comparison between our first and second epochs on the 18th and our first and third epochs on the 19th revealed no obvious counterpart to the limiting magnitude of our first epoch, which we estimate to be V ~ 22 mag. Given the large error box and crowed field, we have confirmed this result using the image differencing code ISIS-2 (Alard 2000).