Reducing the Impact of Calibration Uncertainties on Dark Energy Supernova Surveys via Supernova Self Calibration

Physics – High Energy Physics

Scientific paper

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Scientific paper

We study the effect of filter zero point uncertainties for a future space-based dark energy mission modelled on the proposed JDEM satellite. We show how to take advantage of the correlation between SNe introduced by the filter zero point uncertainties to fit for all the SNe simultaneously, thus achieving a significant improvement in the figure of merit of the SN part of JDEM over more traditional fit methods. We show that this conclusion is robust under very different mission configurations (number of observed SNe, survey redshift etc) and that our approach to SN fitting considerably eases the otherwise very stringent calibration requirements of JDEM.
This work was supported by the Director, Office of Science, Office of High Energy Physics, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231.

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