Beyond ΛCDM: Problems, solutions, and the road ahead

P Bull, Y Akrami, J Adamek, T Baker, E Bellini… - Physics of the Dark …, 2016 - Elsevier
Despite its continued observational successes, there is a persistent (and growing) interest in
extending cosmology beyond the standard model, Λ CDM. This is motivated by a range of …

Towards an understanding of Type Ia supernovae from a synthesis of theory and observations

W Hillebrandt, M Kromer, FK Röpke, AJ Ruiter - Frontiers of Physics, 2013 - Springer
Motivated by the fact that calibrated light curves of Type Ia supernovae (SNe Ia) have
become a major tool to determine the expansion history of the Universe, considerable …

Dark Energy Survey year 1 results: Cosmological constraints from galaxy clustering and weak lensing

TMC Abbott, FB Abdalla, A Alarcon, J Aleksić, S Allam… - Physical Review D, 2018 - APS
We present cosmological results from a combined analysis of galaxy clustering and weak
gravitational lensing, using 1321 deg 2 of griz imaging data from the first year of the Dark …

Dark Energy Survey Year 3 results: A 2.7% measurement of baryon acoustic oscillation distance scale at redshift 0.835

TMC Abbott, M Aguena, S Allam, A Amon… - Physical Review D, 2022 - APS
We present angular diameter measurements obtained by measuring the position of baryon
acoustic oscillations (BAO) in an optimized sample of galaxies from the first three years of …

Dynamical systems perspective of cosmological finite-time singularities in gravity and interacting multifluid cosmology

SD Odintsov, VK Oikonomou - Physical Review D, 2018 - APS
In this work we shall investigate the occurrence of future cosmological finite-time
singularities in the dynamical system corresponding to two cosmological theories, namely …

Dark Energy Survey Year 3 results: Optimizing the lens sample in a combined galaxy clustering and galaxy-galaxy lensing analysis

A Porredon, M Crocce, P Fosalba, J Elvin-Poole… - Physical Review D, 2021 - APS
We investigate potential gains in cosmological constraints from the combination of galaxy
clustering and galaxy-galaxy lensing by optimizing the lens galaxy sample selection using …

Dark Energy Survey Year 3 results: Cosmological constraints from galaxy clustering and galaxy-galaxy lensing using the MagLim lens sample

A Porredon, M Crocce, J Elvin-Poole, R Cawthon… - Physical Review D, 2022 - APS
The cosmological information extracted from photometric surveys is most robust when
multiple probes of the large scale structure of the Universe are used. Two of the most …

Collisions of white dwarfs as a new progenitor channel for type Ia supernovae

S Rosswog, D Kasen, J Guillochon… - The Astrophysical …, 2009 - iopscience.iop.org
We present the results of a systematic numerical study of an alternative progenitor scenario
to produce Type Ia supernova explosions, which is not restricted to the ignition of a CO white …

Testing General Relativity with 21-cm intensity mapping

A Hall, C Bonvin, A Challinor - Physical Review D, 2013 - APS
We investigate the prospects for constraining alternative theories of gravity with a typical
near-term, low-budget 21-cm intensity mapping experiment. We derive the 21-cm brightness …

A guide to designing future ground-based cosmic microwave background experiments

WLK Wu, J Errard, C Dvorkin, CL Kuo… - The Astrophysical …, 2014 - iopscience.iop.org
In this follow-up work to the high energy physics Community Summer Study 2013 (aka
Snowmass), we explore the scientific capabilities of a future Stage IV cosmic microwave …