Mathematics – Logic
Scientific paper
Jul 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005hst..prop10513m&link_type=abstract
HST Proposal ID #10513
Mathematics
Logic
Hst Proposal Id #10513 Hot Stars
Scientific paper
A better understanding of the physics of Type Ia supernovae {SNe} is important for their use as cosmological standard candles. Late time observations of the SN light curves are poorly studied - but offers a unique way to probe the explosion models. Combining state of the art models of 3-D explosions with sophisticated spectral modeling, we can test these models against observations in a way not earlier possible. In particular, the broad band light curves are sensitive to the degree of clumping and the timing of the `infra-red catastrophe', factors which depend on the explosion mechanism {deflagration vs. delayed detonation}. Further, these observations can probe the degree of positron trapping in the ejecta, important for both the SN ejecta and for the production of free positrons in the galaxy. Because of its small distance, favorable galaxy location and excellent ground based follow-up - SN 2003hv offers a unique opportunity to obtain the best late light curves to date. Observations in several optical and IR bands will enable us to distinguish between different model predictions.
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