1808.06615
Beyond the classical distance-redshift test: cross-correlating redshift-free standard candles and sirens with redshift surveys
Mukherjee, Wandelt
LSST will supply up to 1e6 SNe to constrain DE through the distance-redshift (D_L-z) test. Obtaining spectroscopic SN redshifts (spec-z's) is unfeasible; alternatives are suboptimal and may be biased. Propose a powerful multi-tracer generalization of the Alcock-Paczynski test that pairs redshift-free distance tracers and an overlapping galaxy redshift survey. Cross-correlating 5e4 redshift-free SNe with DESI or Euclid outperforms the classical D_L-z test with spec-zs for all SN. The method also applies to gravitational wave sirens or any z-free distance tracer.
Beyond the classical distance-redshift test: cross-correlating redshift-free standard candles and sirens with redshift surveys
Mukherjee, Wandelt
LSST will supply up to 1e6 SNe to constrain DE through the distance-redshift (D_L-z) test. Obtaining spectroscopic SN redshifts (spec-z's) is unfeasible; alternatives are suboptimal and may be biased. Propose a powerful multi-tracer generalization of the Alcock-Paczynski test that pairs redshift-free distance tracers and an overlapping galaxy redshift survey. Cross-correlating 5e4 redshift-free SNe with DESI or Euclid outperforms the classical D_L-z test with spec-zs for all SN. The method also applies to gravitational wave sirens or any z-free distance tracer.
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