Cobalt-56 γ-ray emission lines from the type Ia supernova 2014J

@article{Churazov2014Cobalt56E,
  title={Cobalt-56 $\gamma$-ray emission lines from the type Ia supernova 2014J},
  author={Eugene Churazov and Rashid A. Sunyaev and Jordi Isern and J{\"u}rgen Kn{\"o}dlseder and Pierre Jean and François Lebrun and Nikolai Chugai and Sergei A. Grebenev and Eduardo Bravo and Sergey Yu. Sazonov and Matthieu Renaud},
  journal={Nature},
  year={2014},
  volume={512},
  pages={406-408}
}
A type Ia supernova is thought to be a thermonuclear explosion of either a single carbon–oxygen white dwarf or a pair of merging white dwarfs. The explosion fuses a large amount of radioactive 56Ni (refs 1–3). After the explosion, the decay chain from 56Ni to 56Co to 56Fe generates γ-ray photons, which are reprocessed in the expanding ejecta and give rise to powerful optical emission. Here we report the detection of 56Co lines at energies of 847 and 1,238 kiloelectronvolts and a γ-ray continuum… 

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...

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