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GCN Circular 23822

Subject
Improved IPN error box for GRB 190129B
Date
2019-01-30T22:42:18Z (5 years ago)
From
Dmitry Svinkin at Ioffe Institute <svinkin@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,

and

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

Using the updated Mars-Odyssey (HEND) data we have
triangulated this GRB to an improved, but still preliminary,
3 sigma error box whose coordinates are:
  ---------------------------------------------
   RA(2000), deg                 Dec(2000), deg
  ---------------------------------------------
  Center:
   117.441 (07h 49m 46s)  +0.895 ( +0d 53' 42")
  Corners:
   117.395 (07h 49m 35s)  -0.055 ( +0d 03' 17")
   117.262 (07h 49m 03s)  +0.238 ( +0d 14' 18")
   117.494 (07h 49m 58s)  +1.875 ( +1d 52' 31")
   117.623 (07h 50m 30s)  +1.563 ( +1d 33' 46")
  ---------------------------------------------
The error box area is about 1022 sq. arcmin, and its maximum
dimension is 1.932 deg (the minimum one is 10.3 arcmin).
The Sun distance was about 157 deg.

This error box doesn't overlap the initial error box (Hurley et al., GCN 
Circ. 23808Not found
 
 
), the distance between box centers is 23.65 arcmin.
The distance between the improved box center and the
Swift-XRT candidate afterglow (LaPorte et al., GCN Circ. 23813Not found
 
 
)
is 2.68 arcmin, supporting the association of the transient and the GRB.

This box may be further improved.

A triangulation map is posted at
http://www.ioffe.ru/LEA/GRBs/GRB190129_T44134/IPN

We apologize for any inconvenience caused.