2015/10/29 by N. N. Chugai
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Circumstellar envelope #Ejecta #Envelope (radar) #Gamma-ray bursts and supernovae #Light curve #Neutrino Physics Research #RADIUS #Supernova #Type (biology) #astro-ph.HE
paper · pdf · doi:10.1134/s106377371602002x
11 pages, 3 figures, accepted by Astronomy Letters
arxiv created 2015/10/29 · openalex publication_date 2016/02/01 · arxiv updated 2016/03/09 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The possibility of explaining the light curve and the low expansion velocity of SN 2011ht, which belongs to a group of three objects showing signatures of both type IIn and type IIP supernovae, is explored. The radiated energy and expansion velocity of the ejecta of SN 2011ht are shown to be consistent with a low-energy supernova explosion (≈6 × 1049 erg) and ≤2 M_ \odot ejecta expanding within a circumstellar envelope of radius ~2 × 1014 cm and mass 6−8 M_ \odot An observational test for this scenario is proposed.