[vsnet-grb-info 9479] GRB 100713A: TELMA and 1.5m OSN optical observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  10953
SUBJECT: GRB 100713A: TELMA and 1.5m OSN optical observations
DATE:    10/07/13 22:21:28 GMT
FROM:    Alberto Castro-Tirado at Inst.de Astro. de Andalucia  <ajct at iaa.es>

F. J. Aceituno, J. C. Tello, M. Jelínek, P. Kubánek, J. Gorosabel, S.
Guziy, A. J. Castro-Tirado (IAA-CSIC Granada) and A. de Ugarte Postigo
(INAF-OAB Brera), report:

"Following the detection of GRB 100713A by INTEGRAL (Mereghetti et al.
GCNC 10951), we have obtained optical images with the 0.6m TELMA robotic
telescope at the BOOTES-2 station and with 1.5m telescope at the
Observatorio de Sierra Nevada (OSN), both located in Southern Spain.

At the position of the X-ray afterglow detected by SWIFT/XRT (D'Elia et
al. GCNC 10952) we do not detect any optical source down to I = 23 in
the co-added 1.5m OSN image (3600-s exposure at 21:07 UT, i.e. 6.5-hr
after the onset of the burst).

Due to the low Galactic extinction (Av = 0.2), this INTEGRAL GRB is very
suitable for follow up. Deeper observations (specially at near-IR
wavelengths) are encouraged".

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