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41 research outcomes, page 1 of 5
  • publication . Article . Preprint . 2019
    Open Access English
    Authors:
    DES Collaboration; Abbott, T. M. C.; Alarcon, A.; Allam, S.; Andersen, P.; Andrade-Oliveira, F.; Annis, J.; Asorey, J.; Avelino, A.; Avila, S.; ...
    Countries: France, Denmark, France, France, France, France, United States, United Kingdom, Brazil
    Project: EC | COGS (240672), EC | TESTDE (291329), EC | COSMICDAWN (306478), NSF | Collaborative Research: T... (1138766)

    The combination of multiple observational probes has long been advocated as a powerful technique to constrain cosmological parameters, in particular dark energy. The Dark Energy Survey has measured 207 spectroscopically--confirmed Type Ia supernova lightcurves; the bary...

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  • publication . Preprint . Article . 2020
    Open Access English
    Authors:
    Constance Mahony; Boris Leistedt; Hiranya V. Peiris; Jonathan Braden; Benjamin Joachimi; Andreas Korn; L. Cremonesi; R. J. Nichol;
    Persistent Identifiers
    Project: EC | COSMICDAWN (306478), UKRI | UCL Experimental Particle... (ST/N000285/1)

    Recent works combining neutrino oscillation and cosmological data to determine the neutrino hierarchy found a range of odds in favour of the normal hierarchy. These results arise from differing approaches to incorporating prior knowledge about neutrinos. We develop a hi...

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  • publication . Preprint . Article . 2019
    Open Access
    Authors:
    Feeney, SM; Peiris, HV; Williamson, AR; Nissanke, SM; Mortlock, DJ; Alsing, J; Scolnic, D;
    Persistent Identifiers
    Countries: United Kingdom, Netherlands
    Project: EC | COSMICDAWN (306478)

    The Hubble constant ($H_0$) estimated from the local Cepheid-supernova (SN) distance ladder is in 3-$\sigma$ tension with the value extrapolated from cosmic microwave background (CMB) data assuming the standard cosmological model. Whether this tension represents new phy...

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  • publication . Preprint . Article . 2015
    Open Access
    Authors:
    Stephen M. Feeney; Franz Elsner; Matthew C. Johnson; Hiranya V. Peiris;
    Persistent Identifiers
    Publisher: American Physical Society (APS)
    Project: NSERC , EC | COSMICDAWN (306478)

    We forecast the ability of cosmic microwave background (CMB) temperature and polarization datasets to constrain theories of eternal inflation using cosmic bubble collisions. Using the Fisher matrix formalism, we determine both the overall detectability of bubble collisi...

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  • publication . Article . Preprint . 2019
    Open Access English
    Authors:
    Camacho, H; Kokron, N; Andrade-Oliveira, F; Rosenfeld, R; Lima, M; Lacasa, F; Sobreira, F; da Costa, L N; Avila, S; Chan, K C; ...
    Publisher: HAL CCSD
    Countries: France, France, France, United Kingdom, Brazil, France, France
    Project: EC | COGS (240672), NSF | Collaborative Research: T... (1138766), EC | TESTDE (291329), EC | COSMICDAWN (306478)

    We use data from the first-year (Y1) observations of the DES collaboration to measure the galaxy angular power spectrum (APS), and search for its BAO feature using a template-fitting method. We test our methodology in a sample of 1800 DES Y1-like mock catalogs. The APS ...

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  • publication . Article . Preprint . 2018
    Open Access
    Authors:
    Drlica-Wagner, A.; Sevilla-Noarbe, I.; Rykoff, E. S.; Gruendl, R. A.; Yanny, B.; Tucker, D. L.; Hoyle, B.; Rosell, A. Carnero; Bernstein, G. M.; Bechtol, K.; ...
    Publisher: IOP Publishing
    Countries: France, France, France, United Kingdom, France, France, France
    Project: EC | TESTDE (291329), EC | COSMICDAWN (306478), NSERC , EC | COGS (240672), NSF | Collaborative Research: T... (1138766)

    We describe the creation, content, and validation of the Dark Energy Survey (DES) internal year-one cosmology data set, Y1A1 GOLD, in support of upcoming cosmological analyses. The Y1A1 GOLD data set is assembled from multiple epochs of DES imaging and consists of calib...

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  • publication . Article . Other literature type . Preprint . 2021
    Open Access
    Authors:
    P. Lemos; Marco Raveri; A. Campos; Youngsoo Park; Chihway Chang; N. Weaverdyck; Dragan Huterer; Andrew R. Liddle; Jonathan Blazek; R. Cawthon; ...
    Persistent Identifiers
    Countries: United Kingdom, France, Switzerland, France
    Project: EC | COGS (240672), EC | TESTDE (291329), EC | COSMICDAWN (306478), NSF | Collaborative Research: T... (1138766)

    Quantifying tensions – inconsistencies amongst measurements of cosmological parameters by different experiments – has emerged as a crucial part of modern cosmological data analysis. Statistically significant tensions between two experiments or cosmological probes may in...

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  • publication . Preprint . 2021
    Open Access English
    Authors:
    Lokken, M.; Hložek, R.; van Engelen, A.; Madhavacheril, M.; Baxter, E.; DeRose, J.; Doux, C.; Pandey, S.; Rykoff, E. S.; Stein, G.; ...
    Project: NSF | Advanced ACTPol (1440226), NSERC , NSF | Gravitational Physics fro... (0855887), NSF | Gravitational Physics fro... (1214379), NSF | Collaborative Research: T... (1138766), EC | TESTDE (291329), NSF | ACTPol: The Atacama Cosmo... (0965625), EC | COSMICDAWN (306478), EC | COGS (240672), NSF | Gravitational Physics fro... (0355328),...

    The Cosmic Web contains filamentary structure on a wide range of scales. On the largest scales, superclustering aligns multiple galaxy clusters along inter-cluster bridges, visible through their thermal Sunyaev-Zel'dovich signal in the Cosmic Microwave Background. We de...

  • publication . Article . Other literature type . Preprint . 2019
    Open Access
    Authors:
    Baxter, E. J.; Omori, Y.; Chang, C.; Giannantonio, T.; Kirk, D.; Krause, E.; Blazek, J.; Bleem, L.; Choi, A.; Crawford, T. M.; ...
    Countries: France, United Kingdom, United Kingdom, Switzerland
    Project: NSF | Cosmological Research wit... (1248097), EC | TESTDE (291329), EC | COSMICDAWN (306478), NSF | Collaborative Research: T... (1138766), EC | COGS (240672), NSF | Center for Cosmological P... (0114422), ARC | ARC Future Fellowships - ... (FT150100074)

    Optical imaging surveys measure both the galaxy density and the gravitational lensing-induced shear fields across the sky. Recently, the Dark Energy Survey (DES) collaboration used a joint fit to two-point correlations between these observables to place tight constraint...

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  • publication . Article . Preprint . 2019
    Open Access English
    Authors:
    Abbott, T. M. C.; Abdalla, F. B.; Alarcon, A.; Allam, S.; Annis, J.; Avila, S.; Aylor, K.; Banerji, M.; Banik, N.; Baxter, E. J.; ...
    Publisher: HAL CCSD
    Countries: United States, United Kingdom, France
    Project: EC | TESTDE (291329), EC | COSMICDAWN (306478), EC | COGS (240672), NSF | Collaborative Research: T... (1138766), NSERC , NSF | Center for Cosmological P... (0114422), NSF | Cosmological Research wit... (1248097)

    We perform a joint analysis of the auto and cross-correlations between three cosmic fields: the galaxy density field, the galaxy weak lensing shear field, and the cosmic microwave background (CMB) weak lensing convergence field. These three fields are measured using rou...

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41 research outcomes, page 1 of 5