[vsnet-grb-info 19445] IPN Triangulation of GRB 170529A (long)

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  21165
SUBJECT: IPN Triangulation of GRB 170529A (long)
DATE:    17/05/30 15:36:18 GMT
FROM:    Dmitry Svinkin at Ioffe Institute  <svinkin at mail.ioffe.ru>

K. Hurley, on behalf of the IPN,

I. G. Mitrofanov, D. Golovin, M. L. Litvak, and A. B. Sanin,
on behalf of the HEND-Odyssey GRB team,

D. Svinkin, S. Golenetskii, R. Aptekar, D. Frederiks, A. Kozlova,
and T. Cline on behalf of the Konus-Wind team,

A. von Kienlin, X. Zhang, A. Rau, V. Savchenko, E. Bozzo,
and C. Ferrigno, on behalf of the INTEGRAL SPI-ACS GRB team,

S. Barthelmy, J. Cummings, H. Krimm, and D. Palmer,
on behalf of the Swift-BAT team, and

W. Boynton, C. Fellows, K. Harshman, H. Enos, and R. Starr,
on behalf of the GRS-Odyssey GRB team, report:

A long-duration, GRB 170529A has been detected by
Konus-Wind, Mars-Odyssey (HEND), INTEGRAL (SPI-ACS), and Swift (BAT),
so far, at about 25538 s UT (07:05:38).
The burst was outside the coded field of view of the BAT.

We have triangulated it to a preliminary, 3 sigma error box whose 
coordinates are:
---------------------------------------------
   RA(2000), deg                 Dec(2000), deg
  ---------------------------------------------
  Center:
   164.499 (10h 58m 00s) -17.934 (-17d 56' 01")
  Corners:
   163.130 (10h 52m 31s) -20.393 (-20d 23' 34")
   163.049 (10h 52m 12s) -20.800 (-20d 48' 01")
   165.951 (11h 03m 48s) -15.216 (-15d 12' 59")
   166.065 (11h 04m 15s) -14.719 (-14d 43' 08")
  ---------------------------------------------
The error box area is 2644 sq. arcmin, and its maximum
dimension is 6.7 deg (the minimum one is 7.1 arcmin).
The Sun distance was 103 deg.

This box may be improved.

A triangulation map is posted at
http://www.ioffe.ru/LEA/GRBs/GRB170529_T25541/IPN/

The time history and spectrum will be given in forthcoming GCN Circulars.