A non-spherical core in the explosion of supernova SN 2004dj

Douglas C. Leonard (), Alexei V. Filippenko, Mohan Ganeshalingam, Franklin J. D. Serduke, Weidong Li, Brandon J. Swift, Avishay Gal-Yam, Ryan J. Foley, Derek B. Fox, Sung Park, Jennifer L. Hoffman and Diane S. Wong
Additional contact information
Douglas C. Leonard: California Institute of Technology
Alexei V. Filippenko: University of California
Mohan Ganeshalingam: University of California
Franklin J. D. Serduke: University of California
Weidong Li: University of California
Brandon J. Swift: University of California
Avishay Gal-Yam: California Institute of Technology
Ryan J. Foley: University of California
Derek B. Fox: California Institute of Technology
Sung Park: University of California
Jennifer L. Hoffman: University of California
Diane S. Wong: University of California

Nature, 2006, vol. 440, issue 7083, 505-507

Abstract: How supernovae shape up Supernovae have been subjected to extensive study over the years, particularly since the discovery of their involvement with γ-ray bursts. But there are still some basic questions about them that remain unanswered, for instance, what shape are they? Explosion geometry has been a difficult subject to tackle because supernovae in other galaxies are so distant that they remain point-like in our night sky. Now observations of SN 2004dj, the closest normal Type II-P supernova ever observed, show that the innermost regions of the expanding ejecta are severely distorted, the result of an explosion mechanism that is strongly nonspherical. This property may be inherent to the core-collapse process in all types of supernovae.

Date: 2006
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DOI: 10.1038/nature04558

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