2005/08/31 by Alex Kim, Alex G. Kim, R. Miquel +1 · 1 citation
Physics and Astronomy · #Astronomy #Astrophysics #Calibration #Cosmology #Cosmology and Gravitation Theories #Electronic engineering #Extinction (optical mineralogy) #Galaxy #Gamma-ray bursts and supernovae #Optics #Physics #Radio Astronomy Observations and Technology #Redshift #Remote sensing #Satellite #Sensitivity (control systems) #Supernova #astro-ph
paper · pdf · doi:10.1016/j.astropartphys.2005.09.005
published in Astroparticle Physics 24(6), 451-458 (Elsevier BV) · 7 pages, 2 tables, no figures. Version to appear in Astroparticle Physics. Few typos fixed
openalex publication_date 2005/10/24 · arxiv created 2005/11/14 · arxiv updated 2014/10/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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.