2 papers
astro-ph.HE2026
Hα clarifies picture of IIn supernova SN 2015da
Nikolai Chugai
Observational data on type IIn supernova SN 2015da are revisited to clarify some ambiguous issues of this phenomenon. The H alpha--emitting site is found to switch around day 90 fr…
astro-ph.HE2024
Puzzle of [Ar II] 7 mcm line broad component of SN 1987A
Nikolai N. Chugai, Victor P. Utrobin
We explore the origin of the broad component of the [Ar II] 7 mcm line emission related to the ejecta excitation by the neutron star of SN 1987A. We argue that the line broad wings…