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

Author

Listed:
  • Douglas C. Leonard

    (California Institute of Technology
    San Diego State University)

  • 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
    Pennsylvania State University)

  • Sung Park

    (University of California)

  • Jennifer L. Hoffman

    (University of California)

  • Diane S. Wong

    (University of California)

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.

Suggested Citation

  • 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. Hoff, 2006. "A non-spherical core in the explosion of supernova SN 2004dj," Nature, Nature, vol. 440(7083), pages 505-507, March.
    • Handle: RePEc:nat:nature:v:440:y:2006:i:7083:d:10.1038_nature04558
    DOI: 10.1038/nature04558
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