Abstract
The nature of very energetic supernovae (hypernovae) is discussed. They are the explosive death of stars more massive than ~20–25M ⊙, probably linked to the enigmatic Gamma-Ray Bursts. The optical properties of hypernovae indicate that they are significantly aspherical. Synthetic light curves and late-phase spectra of aspherical supernova/hypernova models are presented. These models can account for the optical observations of SNe 1998bw and 2002ap. The abundance patterns of hypernovae are characterized by large ratios (Zn, Co)/Fe and small ratios (Mn, Cr)/Fe, indicating a significant contribution of hypernovae to the early Galactic chemical evolution.
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Nomoto, K., Maeda, K., Tominaga, N. et al. Hypernovae and Gamma-Ray Bursts. Astrophys Space Sci 298, 81–86 (2005). https://doi.org/10.1007/s10509-005-3915-3
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DOI: https://doi.org/10.1007/s10509-005-3915-3