Schedule Feb 08, 2006
Mass Loss Environment of Long GRBs and Core Collapse SNe
Roger Chevalier (UVA)

The environment of core collapse supernovae is probed by their radio and X-ray emission. The various supernova types (IIP, IIL, IIb, IIn, Ib/c) have characteristic radio properties; the differences can be attributed to the mass loss density and the velocity of the interaction region. The Type Ic SN 1998bw, associated with GRB 980425, fits into this scheme, although with a high velocity. The afterglows of long GRBs are more difficult to reconcile with the expected mass loss environment.

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