Machine learning for observational cosmology

K Moriwaki, T Nishimichi… - Reports on Progress in …, 2023 - iopscience.iop.org
An array of large observational programs using ground-based and space-borne telescopes
is planned in the next decade. The forthcoming wide-field sky surveys are expected to …

The Pantheon+ analysis: cosmological constraints

D Brout, D Scolnic, B Popovic, AG Riess… - The Astrophysical …, 2022 - iopscience.iop.org
We present constraints on cosmological parameters from the Pantheon+ analysis of 1701
light curves of 1550 distinct Type Ia supernovae (SNe Ia) ranging in redshift from z= 0.001 to …

The Pantheon+ analysis: the full data set and light-curve release

D Scolnic, D Brout, A Carr, AG Riess… - The Astrophysical …, 2022 - iopscience.iop.org
Here we present 1701 light curves of 1550 unique, spectroscopically confirmed Type Ia
supernovae (SNe Ia) that will be used to infer cosmological parameters as part of the …

SALT3: An improved type ia supernova model for measuring cosmic distances

WD Kenworthy, DO Jones, M Dai… - The Astrophysical …, 2021 - iopscience.iop.org
A spectral-energy distribution (SED) model for Type Ia supernovae (SNe Ia) is a critical tool
for measuring precise and accurate distances across a large redshift range and constraining …

Scant evidence for thawing quintessence

WJ Wolf, C García-García, DJ Bartlett, PG Ferreira - Physical Review D, 2024 - APS
New constraints on the expansion rate of the Universe seem to favor evolving dark energy in
the form of thawing quintessence models, ie, models for which a canonical, minimally …

The Pantheon+ analysis: Improving the redshifts and peculiar velocities of Type Ia supernovae used in cosmological analyses

A Carr, TM Davis, D Scolnic, K Said, D Brout… - Publications of the …, 2022 - cambridge.org
We examine the redshifts of a comprehensive set of published Type Ia supernovae, and
provide a combined, improved catalogue with updated redshifts. We improve on the original …

Cosmological results from the RAISIN survey: using Type Ia Supernovae in the near infrared as a novel path to measure the dark energy equation of state

DO Jones, KS Mandel, RP Kirshner… - The Astrophysical …, 2022 - iopscience.iop.org
Abstract Type Ia supernovae (SNe Ia) are more precise standardizable candles when
measured in the near-infrared (NIR) than in the optical. With this motivation, from 2012 to …

The effect of environment on Type Ia supernovae in the Dark Energy Survey three-year cosmological sample

L Kelsey, M Sullivan, M Smith… - Monthly Notices of …, 2021 - academic.oup.com
ABSTRACT Analyses of Type Ia supernovae (SNe Ia) have found puzzling correlations
between their standardized luminosities and host galaxy properties: SNe Ia in high-mass …

The Dark Energy Survey: Cosmology Results With~ 1500 New High-redshift Type Ia Supernovae Using The Full 5-year Dataset

TMC Abbott, M Acevedo, M Aguena, A Alarcon… - arXiv preprint arXiv …, 2024 - arxiv.org
We present cosmological constraints from the sample of Type Ia supernovae (SN Ia)
discovered during the full five years of the Dark Energy Survey (DES) Supernova Program …

Concerning colour: The effect of environment on type Ia supernova colour in the dark energy survey

L Kelsey, M Sullivan, P Wiseman… - Monthly Notices of …, 2023 - academic.oup.com
Recent analyses have found intriguing correlations between the colour (c) of type Ia
supernovae (SNe Ia) and the size of their 'mass-step', the relationship between SN Ia host …