TITLE:   GCN CIRCULAR
NUMBER:  3427
SUBJECT: XRF 050509C: REM NIR and Optical refined analysis
DATE:    05/05/16 22:12:22 GMT
FROM:    Paolo D'Avanzo at INAF-OAB  <davanzo@merate.mi.astro.it>

S. Piranomonte, P. D'Avanzo, L.A. Antonelli, S. Covino, D. Malesani,
F.M. Zerbi, G. Chincarini, M. Rodono', G. Tosti,  P. Conconi, G.
Cutispoto, E. Molinari, L. Nicastro, E. Palazzi, V. Testa, F. Vitali, E.
Meurs, P. Goldoni, on behalf of the REM/ROSS Team report: 


Following the detection of a candidate optical counterpart for XRF
050509c (HETE trigger #3751; GCN 3402), by Gorosabel et al. (GCN 3425)
we re-analyzed our optical and NIR REM data (D'Avanzo et al GCN 3400).
At 2.5 hours after the burst no object is found at the position of the
candidate down to a limiting magnitude of R=19 and H=15.5 (3-sigma
level). We note that our R limit is consistent with a power-law decay
index of -1.2 (Gorosabel et al. GCN 3425).


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