Extreme properties of GRB061007: a highly energetic or a highly collimated burst?

Patricia Schady, Massimiliano De Pasquale, Mat.~J. Page, L. Vetere, S.~B. Pandey, X.~Y. Wang, J. Cummings, B. Zhang, S. Zane, A.~A. Breeveld, D.~N. Burrows, N. Gehrels, C. Gronwall, S. Hunsberger, C. Markwardt, K.~O. Mason, P. Mészáros, J.~P. Norris, S.~R. Oates, C. PaganiT.~S. Poole, P.W.~A. Roming, P.~J. Smith, D.~E. vanden Berk