Previous | Session 73 | Next | Author Index | Block Schedule
R. Miquel, A.G. Kim (LBNL)
We present a new technique to extract the cosmological information from high-redshift supernova data in the presence of calibration errors and extinction due to dust. While in the traditional technique the distance modulus of each supernova is determined separately, in our approach we determine all distance moduli at once, in a process that achieves a significant degree of self-calibration. The result is a much reduced sensitivity of the cosmological parameters to the calibration uncertainties. As an example, for a strawman mission similar to that outlined in the SNAP satellite proposal, the increased precision obtained with the new approach is roughly equivalent to a factor of five decrease in the calibration uncertainty.
If you would like more information about this abstract, please follow the link to http://www.arxiv.org/abs/astro-ph/0508252. This link was provided by the author. When you follow it, you will leave the Web site for this meeting; to return, you should use the Back comand on your browser.
Previous | Session 73 | Next
Bulletin of the American Astronomical Society, 37 #4
© 2005. The American Astronomical Soceity.