# A Comparative Study of Dark Energy Constraints from Current Observational Data

@article{Wang2012ACS, title={A Comparative Study of Dark Energy Constraints from Current Observational Data}, author={Yun Wang and Chia-Hsun Chuang and Pia Mukherjee}, journal={Physical Review D}, year={2012}, volume={85}, pages={023517} }

We examine how dark energy constraints from current observational data depend on the analysis methods used: the analysis of Type Ia supernovae (SNe Ia), and that of galaxy clustering data. We generalize the flux-averaging analysis method of SNe Ia to allow correlated errors of SNe Ia, in order to reduce the systematic bias due to weak lensing of SNe Ia. We find that flux-averaging leads to larger errors on dark energy and cosmological parameters if only SN Ia data are used. When SN Ia data (the…

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