Subject: GRB981220

From: elt@astro.Princeton.EDU

Submitted: Tue, 22 Dec 1998 13:32:56 -0500 (EST)

Message number: 12 (previous: 11, next: 13 up: Index)

Somehow, I knew there would be one this week...I think I mentioned
this to you, Bruce...just in time for the holidays and after most
of the 4Q DD01 time is gone!

Note that it is very well placed for first half observations and
that the current error box matches the SPIcam FoV very well.

Ed

>From gcncirc@lheawww.gsfc.nasa.gov Tue Dec 22 13:07 EST 1998
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>From: GCN Circulars <gcncirc@lheawww.gsfc.nasa.gov>
>Message-Id: <199812221807.NAA28123@lheawww.gsfc.nasa.gov>
>Subject: GRB981220 IPN error box
>To: elt@astro.Princeton.EDU
>Date: Tue, 22 Dec 1998 13:07:31 -0500 (EST)
>Reply-To: scott@milkyway.gsfc.nasa.gov
>Affiliation: NASA-GSFC LHEA
>Project:     GCN (GRB Coordinates Network), Circular Service
>Phone:       301-286-3106 (S.Barthelmy's office,  -1684 fax)
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>
>TITLE:   GCN GRB OBSERVATION REPORT
>NUMBER:  160
>SUBJECT: GRB981220 IPN error box
>DATE:    98/12/22 18:06:16 GMT
>FROM:    Kevin Hurley at UCBerkeley/SSL  <khurley@sunspot.ssl.berkeley.edu>
>
>K. Hurley (UC Berkeley), on behalf of the Ulysses/GRB team, T. Cline
>(NASA-GSFC), E. Mazets, and S. Golenetskii (Ioffe Physico-Technical
>Institute), on behalf of the KONUS-Wind team, and D. A.  Smith (MIT)
>report:
>
>"Ulysses and KONUS detected GRB981220.  A preliminary triangulation
>annulus for this event is centered at RA(2000)=347.373 degrees,
>Decl(2000)=+7.336 degrees, with a radius 67.134 +/- 0.020 degrees
>(3 sigma).  This annulus intersects the RXTE/ASM error box at
>
>RA(2000)	Decl(2000)
>
>3h 42m 28.5s	17o 06.3'
>3h 42m 29.0s    17o 11.1'
>3h 42m 39.0s    17o 11.6'
>3h 42m 38.5s    17o 06.8'
>
>to form a ~2.4' x 4.5' error box with approximately 11 sq. arcmin. area.
>The IPN annulus width can be reduced by a factor of 2 to 4.  An
>image may be found at http://ssl.berkeley.edu/ipn3/newdata.html,
>under 981220."
>
>This message is quotable in publications.
>

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