Gamma-ray light curves and spectra of models for Type IA supernovae

Details Gamma-ray light curves and spectra of models for Type IA supernovae Gamma-ray light curves and spectra of models for Type IA supernovae

Jun 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apjs...92..501h&link_type=abstract

The Astrophysical Journal Supplement Series, vol. 92, no. 2, p. 501-504

Astronomy and Astrophysics

Astronomy

8

Gamma Ray Astronomy, Gamma Ray Spectra, Light Curve, Stellar Models, Supernovae, Deflagration, Detonation, Monte Carlo Method, Nickel Isotopes

Scientific paper

Based on detailed Monte Carlo calculations, we present gamma-ray energy deposition functions, gamma-ray light curves, and gamma-ray spectra for a large set of theoretical models of Type Ia supernovae including 'classical' detonation and deflagration, delayed detonation, explosions of low mass white dwarfs, and tamped detonation scenarios. Our computations show that models for Type Ia supernovae can be discriminated and the absolute amount of Ni-56 synthesized in the event can be determined on the basis of the gamma-ray light curves and spectra if gamma-ray measurements are combined with observations at other wavelengths, e.g., in the optical band. We discuss at which times gamma-ray observations are most suitable and needed from the theoretical point of view. The implication of the upper limit in the gamma-ray flux by Compton Gamma-Ray Observatory (CGRO) experiment for our understanding of SN 1991T is discussed. We find that this limit is consistent with both the optical light curve and the implied distance (12.5 Mpc), i.e., several models can be ruled out by the gamma-ray observations.

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