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GRB 030329B

GCN Circular 2025

Subject
GRB030329b: detection by Konus-Wind and Helicon-CoronasF
Date
2003-03-30T15:33:43Z (22 years ago)
From
Dmitry Frederiks at Ioffe Institute <fred@mail.ioffe.ru>
S.Golenetskii, E.Mazets, V.Pal'shin, and D.Frederiks on behalf
of Konus-Wind and Helicon/Coronas-F teams;

T.Cline on behalf of Konus-Wind team report:

GRB030329b was detected by Konus-Wind at 15:34:18.824 UT
and Helicon/Coronas-F at 15:34:15.347 UT
We have triangulated it to a preliminary annulus centered  at
RA(2000) = 205.907 degrees,
Decl(2000)= -13.064 degrees,
and radius = 51.5 +/-  2.3 degrees (3 sigma).
Analysis of Konus-Wind data from both detectors gives
an ecliptic latitude of the source of -45 +/- 10 degrees.

Preliminary data analysis gives the following characteristics:
  - fluence in 15-2000 keV range = 2.0x10-5 erg cm-2 (for 65 seconds)
  - peak flux in 15-2000 keV range = 1.0x10-6 erg cm-2 s-1
  - Ep (at maximum intensity) = 90 keV
  - Ep (time integrated spectrum) = 50 keV

GCN Circular 2055

Subject
IPN triangulation of GRB030329b (large error box)
Date
2003-04-01T01:55:30Z (22 years ago)
From
Kevin Hurley at UCBerkeley/SSL <khurley@sunspot.ssl.berkeley.edu>
K. Hurley, on behalf of the Ulysses GRB team,

D. M. Smith, R. P. Lin, J. McTiernan, R. Schwartz, C. Wigger, W. Hajdas, 
and A. Zehnder, on behalf of the RHESSI GRB team, 

S.Golenetskii, E.Mazets, V.Pal'shin, and D.Frederiks on behalf
of Konus-Wind and Helicon/Coronas-F teams, and

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

Ulysses and RHESSI also observed this burst (GCN 2025). 

We have triangulated it to a preliminary annulus centered  at RA, Decl(2000)=
158.367,  41.226 degrees, whose radius is 89.886 +/-  0.065 degrees (3 sigma ).
This annulus intersects the Konus-Helicon annulus to form two
large error boxes, only one of which is in the correct ecliptic latitude
band.  The intersection points are:

RA(2000)	Dec(2000)
156.798		-48.714
156.710		-48.583
164.555		-48.558
164.440		-48.435


This error box can be improved, but as the event was not observed by
Mars Odyssey, a small error box cannot be derived for it.

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