Hypothesis for the Type I supernova light curve

Details Hypothesis for the Type I supernova light curve Hypothesis for the Type I supernova light curve

Jun 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975natur.255..690l&link_type=abstract

Nature, Volume 255, Issue 5511, pp. 690-692 (1975).

Physics

11

Scientific paper

IN a Type I supernova event1-3 the observed luminosity rises very rapidly to a maximum absolute visual magnitude of about -19.0+/-0.3. After about 20 d the light curve (Fig. 1) can be characterised by two exponential decays with half lives τ1 and τ2 where τ1 is of the order of several days and τ2 varies approximately from 40 to 60 d. The integrated observed luminosity is similar for all Type I supernova and is about 3.6 × 1049 erg. A feeble but persistent departure from a simple double exponential decay is also apparent in Fig. 1 and disappears on a time scale τ3 of ~80 d. We suggest that a model involving 56Ni white dwarf can explain these changes.

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