[vsnet-grb-info 19507] IPN Triangulation of GRB 170607B

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  21242
SUBJECT: IPN Triangulation of GRB 170607B
DATE:    17/06/10 14:15:43 GMT
FROM:    Anna Kozlova at Ioffe Institute  <ann_kozlova 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,

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

V. Connaughton, M. S. Briggs, C. Meegan, V. Pelassa,
and A. Goldstein, on behalf of the Fermi GBM team,

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

and

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

The long-duration GRB 170607B (Sharma et al., GCN Circ. 21232;
Hamburg et al., GCN 21238) has been detected by Konus-Wind,
Fermi (GBM), INTEGRAL (SPI-ACS), Mars-Odyssey (HEND), and
AstroSat (CZTI), so far, at about 81720 s UT (22:42:00).

We have triangulated it to a preliminary, 3 sigma error box whose
coordinates are:
---------------------------------------------
  RA(2000), deg                 Dec(2000), deg
 ---------------------------------------------
 Center:
  246.661 (16h 26m 39s) -39.159 (-39d 09' 32")
 Corners:
  245.286 (16h 21m 09s) -37.113 (-37d 06' 45")
  247.857 (16h 31m 26s) -41.075 (-41d 04' 30")
  248.366 (16h 33m 28s) -41.126 (-41d 07' 34")
  245.736 (16h 22m 57s) -37.211 (-37d 12' 39")
 ---------------------------------------------
The error box area is 1.3 sq. deg, and its maximum
dimension is 4.67 deg (the minimum one is 17.8 arcmin).
The Sun distance was 160 deg.

This box may be improved.

A triangulation map is posted at
http://www.ioffe.ru/LEA/GRBs/GRB170607_T81725/IPN/

The Konus-Wind time history and spectrum will be given in a forthcoming
GCN Circular.