[vsnet-grb-info 26917] IPN triangulation of GRB 201207A

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  29020
SUBJECT: IPN triangulation of GRB 201207A
DATE:    20/12/09 22:58:11 GMT
FROM:    Anna Ridnaia at Ioffe Institute  <ridnaia at mail.ioffe.ru>

K. Hurley, on behalf of the IPN,

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

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

A. Goldstein, M. S. Briggs, and C. Wilson-Hodge
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,

A. Ursi, F. Verrecchia, M. Tavani, N. Parmiggiani, C. Pittori,
A. Bulgarelli, on behalf of the AGILE 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 201207A
(Fermi-GBM detection: The Fermi GBM Team, GCN Circ. 28996;
AstroSat-CZTI detection: Gupta et al., GCN Circ. 29000;
AGILE detection: Ursi et al., GCN Circ. 29010)
was detected by Fermi (GBM trigger 629076420), Konus-Wind,
INTEGRAL (SPI-ACS), Mars-Odyssey (HEND), AstroSat (CZTI),
and AGILE (MCAL) at about 84414 s UT (23:26:54).

We have triangulated it to a preliminary, 3 sigma error box
whose coordinates are:
 ---------------------------------------------
  RA(2000), deg                 Dec(2000), deg
 ---------------------------------------------
 Center:
  120.193 (08h 00m 46s) -49.327 (-49d 19' 36")
 Corners:
  119.115 (07h 56m 27s) -48.611 (-48d 36' 40")
  119.340 (07h 57m 22s) -50.448 (-50d 26' 55")
  121.306 (08h 05m 13s) -50.030 (-50d 01' 48")
  121.014 (08h 04m 03s) -48.193 (-48d 11' 36")
 ---------------------------------------------
The error box area is 2.4 sq. deg, and its maximum
dimension is 2.5 deg (the minimum one is 1.3 deg).
The Sun distance was 97 deg.

This box may be improved.

A triangulation map is posted at
http://www.ioffe.ru/LEA/GRBs/GRB201207_T84417/IPN/

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