Supernova Flux-averaging Likelihood Code

Details Supernova Flux-averaging Likelihood Code Supernova Flux-averaging Likelihood Code

Sep 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011ascl.soft09014w&link_type=abstract

Astrophysics Source Code Library, record ascl:1109.014

Astronomy and Astrophysics

Astrophysics

Scientific paper

Flux-averaging justifies the use of the distance-redshift relation for a smooth universe in the analysis of type Ia supernova (SN Ia) data. Flux-averaging of SN Ia data is required to yield cosmological parameter constraints that are free of the bias induced by weak gravitational lensing. SN Ia data are converted into flux. For a given cosmological model, the distance dependence of the data is removed, then the data are binned in redshift, and placed at the average redshift in each redshift bin. The likelihood of the given cosmological model is then computed using "flux statistics''. These Fortran codes compute the likelihood of an arbitrary cosmological model [with given H(z)/H_0] using flux-averaged Type Ia supernova data.

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