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GCN Circular 19259

Subject

IPN Triangulation of GRB 160406A (short/hard)

Date

2016-04-07T21:02:59Z (8 years ago)

From

Anna Kozlova at Ioffe Institute <ann_kozlova@mail.ioffe.ru>

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

K. Hurley, on behalf of the IPN,

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

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

A short-duration GRB 160406A has been detected by Konus-Wind, Fermi (GBM;
trigger 481637080), Swift (BAT), and INTEGRAL (SPI-ACS), so far, at about
43477 s UT (12:04:37). 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:
  261.797 (17h 27m 11s) +32.363 (+32d 21' 48")
 Corners:
  262.805 (17h 31m 13s) +27.232 (+27d 13' 56")
  263.169 (17h 32m 41s) +27.080 (+27d 04' 47")
  260.364 (17h 21m 27s) +38.219 (+38d 13' 07")
  259.883 (17h 19m 32s) +38.538 (+38d 32' 15")
 ---------------------------------------------
The error box area is 3.34 sq. deg, and its maximum
dimension is 11.8 deg (the minimum one is 17.5 arcmin).
The Sun distance was 106 deg.

This box may be improved.

A triangulation map is posted at
http://www.ioffe.ru/LEA/GRBs/GRB160406_T43476/IPN/

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