arXiv · astro-ph/0309733
GRB 011121: A collimated outflow into wind-blown surroundings
Abstract
We discover a break in the GRB 011121 afterglow light curve after 1.3 days, which implies an initial jet opening angle of about 9 deg. The SED during the first four days is achromatic, and supports the jet origin of this break. The SED during the supernova bump can be best represented by a black body with a temperature of 6000 K. The deduced parameters for the decay slope as well as the spectral index favor a wind scenario, i.e. an outflow into a circum-burst environment shaped by the stellar wind of a massive GRB progenitor. Due to its low redshift of z=0.36, GRB 011121 has been the best example for the GRB-supernova connection until GRB 030329, and provides compelling evidence for a circum-burster wind region expected to exist if the progenitor was a massive star.
Explore related subjects
Keep this discovery
Explore connections, maps & timelines
J. Greiner, S. Klose, M. Salvato, A. Zeh, R. Schwarz, D. H. Hartmann, N. Masetti, B. Stecklum, G. Lamer, N. Lodieu, R. D. Scholz, C. Sterken, J. Gorosabel, I. Burud, J. Rhoads, I. Mitrofanov, M. Litvak, A. Sanin, V. Grinkov, M. I. Andersen, J. M. Castro Cerón, A. J. Castro-Tirado, A. Fruchter, J. U. Fynbo, J. Hjorth, L. Kaper, C. Kouveliotou, E. Palazzi, E. Pian, E. Rol, N. R. Tanvir, P. M. Vreeswijk, R. A. M. J. Wijers, E. van den Heuvel. 2003-09-26. GRB 011121: A collimated outflow into wind-blown surroundings. https://doi.org/10.1086/379606
Cite the original work for its findings. Save a collection to share your selection of sources.