Explaining unusual line profiles of SN 2006gy

Abstract

Origin of enigmatic line profiles of extremely luminous type IIn supernova SN~2006gy on day 96 is explored. Among conceivable possibilities the most preferred is the model that suggests holes in the optically thick cool dense shell (CDS). The line radiation emitted at the inner side of the opaque CDS escapes through the holes thus producing unusual line profile with the emission shifted redward. The holes could emerge as a result of a vigorous Rayleigh-Taylor instability leading to the CDS fragmentation. The model light curve with the CDS fragmentation is shown to be consistent with the SN~2006gy bolometric light curve.

MNRAS, accepted

References in corpus (5)

• Pulsational pair instability as an explanation for the most luminous supernovae
• SN 2006gy: An extremely luminous supernova in the galaxy NGC 1260
• Shell-shocked diffusion model for the light curve of SN2006gy
• Light Curve Modeling of Superluminous Supernova 2006gy: Collision between Supernova Ejecta and Dense Circumstellar Medium
• Late-time observations of SN2006gy: Still Going Strong