The search for high-redshift supernovae and the image reduction

Details The search for high-redshift supernovae and the image reduction The search for high-redshift supernovae and the image reduction

Nov 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999phdt........21k&link_type=abstract

Thesis (PhD). UNIVERSITY OF CALIFORNIA, BERKELEY, Source DAI-B 61/03, p. 1449, Sep 2000, 83 pages.

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The absolute peak magnitudes of Type Ia supernovae are tightly bound and their small variation shows a strong correlation with their lightcurve widths and spectral features. This correlation can be used to calibrate Type Ia supernovae peak magnitudes, making Type Ia supernovae one of the most powerful cosmological distance indicators. The Supernova Cosmology Project has developed a new search technique for detecting Type Ia supernovae at high redshift and found more than 70 supernovae at 0.3 < z < 1.2. We have used these high-redshift Type Ia supernovae to measure the cosmological parameters, ΩM, and ΩΛ , of the standard big bang model. By analyzing the redshift-apparent brightness relationship on a sample of the first 42 supernovae at 0.3 < z < .85, we have succeeded in putting a significant constraint, on the cosmological parameters. In this paper, I will discuss our supernova detection technique and the image reduction process we have used in our project.

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