Mathematics – Logic
Scientific paper
Jul 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009hst..prop12298e&link_type=abstract
HST Proposal ID #12298. Cycle 18
Mathematics
Logic
Scientific paper
Type Ia supernovae {SNe Ia} represent the most mature and productive probe of the dark energy invoked to explain the cosmic acceleration. Considerable resources are being invested with HST and ground-based facilities to detect and measure the properties of distant SNe Ia for this purpose. However, there is not yet a convincing physical model for these events and important correlations have been found between the intrinsic properties of SNe Ia and their host galaxy environment. These suggest diverse ways in which the explosions may occur and highlight the importance of the progenitor metallicity and its relationship to the resulting light curve. We propose a new Target of Opportunity campaign to track and model the time evolution of the UV via spectroscopy of 5 carefully-selected local SNe Ia from soon after the explosion through maximum light. Early phase UV spectroscopy will provide a key diagnostic of the progenitor composition and time-sequence modeling will probe the density structure and its relevance to a variety of explosive models. Recent progress in detailed SNe Ia modeling and in locating early SNe Ia with the highly-successful Palomar Transient Factory now make it practical to embark on such a detailed campaign. The results will significantly improve our ability to understand the validity and limitations of the use of SNe Ia as future cosmological probes.;
No associations
LandOfFree
Towards a Physical Understanding of the Diversity of Type Ia Supernovae does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Towards a Physical Understanding of the Diversity of Type Ia Supernovae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Towards a Physical Understanding of the Diversity of Type Ia Supernovae will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1786097