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Reducing zero-point systematics in dark energy supernova experiments
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DOI：10.1016/j.astropartphys.2011.03.003.png)
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We study the effect of filter zero-point uncertainties on future supernova dark energy missions. Fitting for calibration parameters using simultaneous analysis of all Type la supernova standard candles achieves a significant improvement over more traditional fit methods. This conclusion is robust under diverse experimental configurations (number of observed supernovae, maximum survey redshift, inclusion of additional systematics). This approach to supernova fitting considerably eases otherwise stringent mission calibration requirements. As an example we simulate a space-based mission based on the proposed JDEM satellite; however-the method and conclusions are general and valid for any future supernova dark energy mission, ground or space-based. (C) 2011 Elsevier B.V. All rights reserved.
Keyword:
Dark energy
Cosmology: observations
Supernovae
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分享收藏分享收藏AN INTENSIVE HUBBLE SPACE TELESCOPE* SURVEY FOR z > 1 TYPE Ia SUPERNOVAE BY TARGETING GALAXY CLUSTERS.png)
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