[vsnet-grb-info 17216] IPN triangulation of GRB151107B

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  18577
SUBJECT: IPN triangulation of GRB151107B
DATE:    15/11/11 00:48:21 GMT
FROM:    Kevin Hurley at UCBerkeley/SSL  <khurley at ssl.berkeley.edu>

K. Hurley, on behalf of the IPN,

S. Golenetskii, R. Aptekar, V. Pal'shin, D. Frederiks, 
D. Svinkin, and T. Cline, on behalf of the Konus-Wind team,

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

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

report:

GRB 151107B (Stanbro and Meegan, GCN 18570) was also observed by Konus-Wind
and Mars Odyssey-HEND.  We have triangulated it to a preliminary annulus centered
at RA, Dec(2000) = 357.447, -2.630, whose radius is 55.156 +/- 0.054 degrees
(3 sigma).  The minimum distance between the center line of this annulus 
and the MASTER-NET optical transient (Lipunov et al., GCN 18576) is 3.22
degrees, supporting the conclusion that the OT and the GRB are indeed unrelated.
A map has been posted at ssl.berkeley.edu/ipn3/151107B.