A simulation-based inference method with Gaussian process emulators trained on 1300 kilonova simulations recovers parameters accurately and rapidly while avoiding MCMC biases from likelihood misspecification.
The Next Generation of Cosmological Measurements with Type Ia Supernovae
3 Pith papers cite this work, alongside 7 external citations. Polarity classification is still indexing.
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7
external citations · Pith
abstract
While Type Ia Supernovae (SNe Ia) are one of the most mature cosmological probes, the next era promises to be extremely exciting in the number of different ways SNe Ia are used to measure various cosmological parameters. Here we review the experiments in the 2020s that will yield orders of magnitudes more SNe Ia, and the new understandings and capabilities to constrain systematic uncertainties at a level to match these statistics. We then discuss five different cosmological probes with SNe Ia: the conventional Hubble diagram for measuring dark energy properties, the distance ladder for measuring the Hubble constant, peculiar velocities and weak lensing for measuring sigma8 and strong-lens measurements of H0 and other cosmological parameters. For each of these probes, we discuss the experiments that will provide the best measurements and also the SN Ia-related systematics that affect each one.
representative citing papers
Recommends an 11.4 m spectroscopic survey telescope with 5 deg² FOV and 15,000 fibers for massively multiplexed spectroscopy to complement Gaia, LSST, Euclid, and WFIRST.
Pantheon+ releases 1701 light curves from 1550 spectroscopically confirmed Type Ia supernovae across 18 surveys for cosmological inference.
citing papers explorer
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Rapid and robust simulation-based inference for kilonovae
A simulation-based inference method with Gaussian process emulators trained on 1300 kilonova simulations recovers parameters accurately and rapidly while avoiding MCMC biases from likelihood misspecification.
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SpecTel: A 10-12 meter class Spectroscopic Survey Telescope
Recommends an 11.4 m spectroscopic survey telescope with 5 deg² FOV and 15,000 fibers for massively multiplexed spectroscopy to complement Gaia, LSST, Euclid, and WFIRST.
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The Pantheon+ Analysis: The Full Dataset and Light-Curve Release
Pantheon+ releases 1701 light curves from 1550 spectroscopically confirmed Type Ia supernovae across 18 surveys for cosmological inference.