[vsnet-grb-info 401] Improved IPN position for GRB020918 (two large error boxes)

[GCN Circulars <gcncirc@lheawww.gsfc.nasa.gov>]

TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  1548
SUBJECT: Improved IPN position for GRB020918 (two large error boxes)
DATE:    02/09/20 20:43:59 GMT
FROM:    Kevin Hurley at UCBerkeley/SSL  <khurley@sunspot.ssl.berkeley.edu>

K. Hurley, on behalf of the Ulysses GRB team,

E. Mazets and S. Golenetskii, on behalf of the Konus-Wind GRB team, and

T. Cline, on behalf of the Ulysses and Konus-Wind GRB teams, report:

A preliminary analysis of the Konus data for this event (GCN 1546)
indicates that it originated from an ecliptic latitude between +20 and
+40 degrees.  Combining this information with the triangulated position
(an annulus centered at RA, Decl (2000)=171.715, 38.791 degrees, whose
3 sigma radius is 88.681 +/-0.030 degrees) limits the possible arrival
directions to the two sections of the annulus contained between RA,
Decl (2000)= 14.4, 50.3 and 45.4, 38.0 degrees, and between RA, Decl
(2000)= 257.7, -2.9 and 273.8, 16.6 degrees.

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