Anisotropies in Core Collapse Supernovae

Details Anisotropies in Core Collapse Supernovae Anisotropies in Core Collapse Supernovae

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006chjas...6a.335p&link_type=abstract

Chinese Journal of Astronomy and Astrophysics, Supplement, Volume 6, Issue S1, pp. 335-341 (2006).

Astronomy and Astrophysics

Astrophysics

Scientific paper

Core-collapse supernovae are the final stage of the evolution of massive stars. When these have previously lost their hydrogen and helium envelopes, the supernova explosion is classified as Type Ic. This class of supernovae are particularly interesting because of the link with long-duration Gamma-Ray Bursts. It is commonly believed that these explosions, especially when associated with a Gamma-Ray Burst, must be aspherical. Late-time observations of SN 2003jd, a luminous Type Ic supernova, provide direct evidence of this asphericity. Subaru and Keck spectra have revealed double-peaked profiles in the nebular lines of neutral oxygen and magnesium. These profiles are different from those of known Type Ic supernovae, with or without a gamma-ray burst, and they can be understood if SN 2003jd was an aspherical, axisymmetric explosion viewed from near the equatorial plane. We will discuss the implications of this observation for the association between GRBs and supernovae.

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