New dense early-time observations of SN 2014C reveal high-velocity H-alpha in its ejecta and show its light curve needs an extra energy source, likely early circumstellar interaction, about two weeks after peak.
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SN 2014C: a metamorphic supernova exploded in the intricate and hydrogen-rich surroundings
New dense early-time observations of SN 2014C reveal high-velocity H-alpha in its ejecta and show its light curve needs an extra energy source, likely early circumstellar interaction, about two weeks after peak.