[vsnet-grb-info 23838] GRB 190926A: Upper limit from CAHA 2.2m observation
GCN Circulars
gcncirc at capella2.gsfc.nasa.gov
Thu Oct 3 23:32:33 JST 2019
TITLE: GCN CIRCULAR
NUMBER: 25937
SUBJECT: GRB 190926A: Upper limit from CAHA 2.2m observation
DATE: 19/10/03 14:31:18 GMT
FROM: Alexander Kann at IAA-CSIC <kann at iaa.es>
M. Blazek, D. A. Kann (both HETH/IAA-CSIC), A. de Ugarte Postigo
(HETH/IAA-CSIC, DARK/NBI), C. C. Thoene, K. Bensch, J. F. Agui (all
HETH/IAA-CSIC), I. Hermelo, and S. Pedraz (both CAHA) report:
We observed the field of GRB 190926A (Melandri et al. GCN #25848) with
the 2.2m telescope at Calar Alto Observatory, Spain. The observation is
centered 0.6523 days after the GRB and consisted of 3 x 360 s exposures
in the V band for a total exposure time of 1080 s, obtained before
technical problems shut down the observation sequence.
No new object is detected within the refined XRT error circle (Goad et
al. GCN #25850) down to a 3-sigma limit of V(AB) = 21.9 mag, as compared
to stars of the GSC 2.3 catalog. This is in agreement with the deep
non-detection by OSN (Kann et al., GCN #25856).
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