ИСТИНА |
Войти в систему Регистрация |
|
ИСТИНА ИНХС РАН |
||
Standardization of type Ia supernovae (SN Ia) is necessary for a more accurate measurement of the cosmological parameters of the Universe using the Hubble diagram. In the SALT2 SN Ia light-curve fitting model 2 standardization parameters are used — the color parameter c and the stretch parameter x1. The stretch parameter dependence on the host galaxy morphology and other supernova environment parameters is known from literature on this topic. In our work we reproduce the Hubble diagram fit according to Pantheon data, and also explore the possibility of introducing various standardization equations for SN exploded in early-type and late-type galaxies.