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We investigate the environment of the nearby (d 40 Mpc) broad-lined Type Ic supernova SN 2009bb. This event was observed to produce a relativistic outflow likely powered by a central accreting compact object. While such a phenomenon was previously observed only in long-duration gamma-ray bursts...


Levesque, E. M.Soderberg, A. M.Foley, R. J.Berger, E.Kewley, L. J.Chakraborti, A. RayTorres, M. A. P.Challis, P.Kirshner, R. P.Barthelmy, S. D.Bietenholz, M. F.Chandra, P.Chaplin, V.Chevalier, R. A.Chugai, N.Connaughton, V.Copete, A.Fox, O.Fransson, C.Grindlay, J. E.Hamuy, M. A.Milne, P. A.Pignata, G.Stritzinger, M. D.Wieringa, M. H.[The high-metallicity explosion environment of the relativistic supernova 2009bb1]The high-metallicity explosion environment of the relativistic supernova 2009bb1

Ultraviolet (UV) observations of Type Ia supernovae (SNe Ia) probe the outermost layers of the explosion, and UV spectra of SNe Ia are expected to be extremely sensitive to differences in progenitor composition and the details of the explosion. Here, we present the first study of a sample of high...


Foley, Ryan J.Pan, Yen-ChenBrown, P.Filippenko, A. V.Fox, O. D.Hillebrandt, W.Kirshner, R. P.Marion, G. H.Milne, P. A.Parrent, J. T.Pignata, G.Stritzinger, M. D.[Ultraviolet diversity of Type Ia Supernovae]Ultraviolet diversity of Type Ia Supernovae

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