The amount of Ni produced in type Ia supernova (SN Ia) explosion is probably the most important physical parameter underlying the observed correlation of SN Ia luminosities with their light curves. Based on an empirical relation between the Ni mass and the light curve parameter △m15, we roughly determined the Ni mass for a large sample of nearby SNe Ia with the aim of exploring SN Ia diversity....

Type Ia supernovae (SNe Ia) provide us with a unique tool for measuring extragalactic distances and determining cosmological parameters. As a result, the precise and effective calibration for peak luminosities of SNe Ia becomes extremely crucial and thus is critically scrutinized for cosmological explorations. In this Letter, we reveal clear evidence for a tight linear correlation between peak ...

The amount of Ni produced in type Ia supernova (SN Ia) explosion is probably the most important physical parameter underlying the observed correlation of SN Ia luminosities with their light curves. Based on an empirical relation between the Ni mass and the light curve parameter △m15, we obtained rough estimates of the Ni mass for a large sample of nearby SNe Ia with the aim of exploring the div...