GCN Circular 9099
Subject
GRB 090404: nIR observations at Calar Alto
Date
2009-04-06T22:05:09Z (16 years ago)
Edited On
2024-11-18T09:51:52Z (2 months ago)
From
Alberto Castro-Tirado at Inst.de Astro. de Andalucia <ajct@iaa.es>
Edited By
Judith Racusin at NASA/GSFC <judith.racusin@nasa.gov> on behalf of Leo P. Singer at NASA/GSFC <leo.p.singer@nasa.gov>
M. Jelínek, A. J. Castro-Tirado (IAA-CSIC Granada) and G. Bergond (CAHA
Almería), on behalf of a larger collaboration, report:
"Following the detection by Swift of GRB 090404 (Ziaeepour et al. GCNC
9086), JHKs observations (900-s each) were conducted on Apr 5.025 UT (8.5
hr after the burst) with the 3.5-m telescope (+ OMEGA2000) at the
German-Spanish Calar Alto Observatory, under excellent conditions (0".9
seeing). At the Swift/XRT enhanced position (Beardmore et al. GCNC 9088)
no nIR source is detected down to a limiting magnitude H = 21.5, in
agreement with the limits reported by Afonso et al (GCNC 9096)."
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