부산대학교 도서관

Interacting supernovae (SNe) IIn and Ibn show narrow emission lines and have always been a mysterious and unsolved genre in SNe physics. We present a comprehensive analysis of the temporal and spectroscopic behavior of a group of interacting SNe IIn and Ibn. We choose SNe 2012ab, 2020cui, 2020rc and 2019uo as representative members of these SN sub-types to probe the nature of explosion. Our study reveals that SNe IIn are heterogeneous, bright depicting multi-staged temporal evolution while SNe Ibn are moreover homogeneous, comparatively fainter than SNe IIn and short lived, but limited in a sample to firmly constrain the homogeneity. The spectroscopic features display a great diversity in H α and He profiles for both SNe IIn and Ibn. The representative SN Ibn also show flash ionization signatures of CIII and NIII. Modeling of H α reveals that SNe IIn have, in general, an asymmetric CSM which interacts with SN ejecta resulting in diversity in H α profiles. [ABSTRACT FROM AUTHOR]