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[vsnet-grb-info 255] GRB020531 Optical observations with TAROT
TITLE: GCN GRB OBSERVATION REPORT
NUMBER: 1420
SUBJECT: GRB020531 Optical observations with TAROT
DATE: 02/06/11 13:32:57 GMT
FROM: Michel Boer at CESR-CNRS <Michel.Boer@cesr.fr>
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A. Klotz, M. Boer (CESR/OMP/CNRS), and J.L. Atteia (LAT/OMP/CNRS),
on behalf of the TAROT collaboration communicate:
Following our first analysis (Boer et al., GCN #1408), we performed a
refined analysis of the images acquired by TAROT after the alert sent by
HETE for GRB 020531 (Ricker et al., GCN #1399). Within the IPN error
box we find a 3 sigma excess, elongated in the direction of the
telescope aberration, at the following position: RA =3D 15h15m12s, DEC =
=3D
-19=B024=9233=94, with an error box of 7 arcsec, and a magnitude of =
17.5.
Though this possible source is close to CXOU J151514.1-192428 (source #
56 in Butler et al., GCN #1415) both sources seem different.
=20
In addition, the exposures taken by TAROT started at 01h54m28s UT, 6s
after the alert was sent by the GCN (and not 50s as mentioned in the
earlier circular).
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This message is citeable.
=20
.
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<li class=3DMsoNormal><font size=3D2 face=3DArial><span lang=3DEN-GB =
style=3D'font-size:
10.0pt;font-family:Arial'>Klotz, M. Boer (CESR/OMP/CNRS), and J.L. =
Atteia
(LAT/OMP/CNRS), on behalf of the TAROT collaboration =
communicate:</span></font></li>
</ol>
<p class=3DMsoNormal style=3D'margin-left:18.0pt'><font size=3D2 =
face=3DArial><span
lang=3DEN-GB style=3D'font-size:10.0pt;font-family:Arial'>Following our =
first analysis
(Boer et al., GCN #1408), we performed a refined analysis of the images
acquired by TAROT after the alert sent by HETE for GRB 020531 (Ricker et =
al.,
GCN #1399). =A0Within the IPN error box we find a 3 sigma excess, =
elongated in
the direction of the telescope aberration, at the following position: RA =
=3D 15h15m12s,
DEC =3D -19=B024’33”, with an error box of 7 arcsec, and a =
magnitude of
17.5. Though this possible source is close to </span></font><font =
size=3D2
face=3D"Courier New"><span lang=3DEN-GB =
style=3D'font-size:10.0pt;font-family:"Courier New"'>CXOU
J151514.1-192428</span></font><font size=3D2 face=3DArial><span =
lang=3DEN-GB
style=3D'font-size:10.0pt;font-family:Arial'> (source # 56 in Butler et =
al., GCN
#1415) both sources seem different.</span></font></p>
<p class=3DMsoNormal style=3D'margin-left:18.0pt'><font size=3D2 =
face=3DArial><span
lang=3DEN-GB =
style=3D'font-size:10.0pt;font-family:Arial'> </span></font></p>
<p class=3DMsoNormal style=3D'margin-left:18.0pt'><font size=3D2 =
face=3DArial><span
lang=3DEN-GB style=3D'font-size:10.0pt;font-family:Arial'>In addition, =
the
exposures taken by TAROT started at 01h54m28s UT, 6s after the alert was =
sent by
the GCN (and not 50s as mentioned in the earlier =
circular).</span></font></p>
<p class=3DMsoNormal style=3D'margin-left:18.0pt'><font size=3D2 =
face=3DArial><span
lang=3DEN-GB =
style=3D'font-size:10.0pt;font-family:Arial'> </span></font></p>
<p class=3DMsoNormal style=3D'margin-left:18.0pt'><font size=3D2 =
face=3DArial><span
lang=3DEN-GB style=3D'font-size:10.0pt;font-family:Arial'>This message =
is citeable.</span></font></p>
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face=3DArial><span
lang=3DEN-GB =
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