GCN Circular 1234
Subject
GRB 020127, I-band observations starting 3.14-hr after the event
Date
2002-01-29T02:02:14Z (23 years ago)
From
Alberto Castro-Tirado at LAEFF-INTA <ajct@laeff.esa.es>
GRB 020127, I-band observations starting 3.14-hr after the event
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Jos� Mar�a Castro Cer�n, ROA (San Fernando),
Javier Gorosabel, DSRI (Copenhagen),
Jochen Greiner, AIP (Potsdam),
Sylvio Klose, TLS (Tautenburg),
Jan Snigula, USM (Munich) and
Alberto J. Castro-Tirado, IAA-CSIC (Granada) and LAEFF-INTA (Madrid)
report:
On 28 Jan 2002 we have observed the HETE error box for GRB 020127. The
first epoch images were centred at the initial ground analysis position
(= H1902) while the second epoch images were centred at the further ground
analysis position (Ricker et al. GCN 1229). Third epoch observations were
centred at the combined IPN annulus/HETE error circle (Hurley et al.,
GCN 1232).
Imaging commenced 3.14 hours after the occurence of the burst. All images
were taken in the I-band, with the 1.23 m telescope at the Centro Astron�mico
Hispano Alem�n's Calar Alto Observatory (Almer�a, Spain). Exposures were
of 300 s.
A log of the observations is given below.
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date start R.A. (2000) Dec. (2000) number of Error box Coverage
(UT) frames (%)
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Jan 28.0039 08h 15m 20s +36� 48' 00" 1 75
Jan 28.0105 08h 15m 20s +36� 34' 00" 1 50
Jan 28.2164 08h 15m 06s +36� 44' 31" 3 90
Jan 28.9201 08h 15m 08s +36� 46' 16" 5 100
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Visual inspection revealed no new object, brighter than the DSS-2 limiting
magnitude for this field (R ~21.5), in the 75% of the combined IPN
annulus/HETE error box taken 3.14 hours after the GRB, when compared to
the third epoch images (~22 hours later, I_lim = 19.5), in agreement with
the ARC 3.5-m observations (Lamb et al. GCN 1230).
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