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26 research outcomes, page 1 of 3
  • publication . Article . 2016
    Open Access English
    Authors:
    Comparat, J.; Delubac, T.; Jouvel, S.; Raichoor, A.; Kneib, J. P.; Yèche, C.; Abdalla, F. B.; Le Cras, C.; Maraston, C.; Wilkinson, D. M.; ...
    Publisher: eScholarship, University of California
    Project: EC | COSMICDAWN (306478), EC | TESTDE (291329), NSF | Collaborative Research: T... (1138766), ANR | P2IO (ANR-10-LABX-0038), EC | COGS (240672)

    © 2016 ESO. The Sloan Digital Sky Survey IV extended Baryonic Oscillation Spectroscopic Survey (SDSS-IV/eBOSS) will observe 195 000 emission-line galaxies (ELGs) to measure the baryonic acoustic oscillation (BAO) standard ruler at redshift 0.9. To test different ELG sel...

  • publication . Article . 2016
    Open Access English
    Authors:
    Abbott, T.; Abdalla, F. B.; Allam, S.; Amara, A.; Annis, J.; Armstrong, R.; Bacon, D.; Banerji, M.; Bauer, A. H.; Baxter, E.; ...
    Project: EC | TESTDE (291329), EC | COGS (240672), EC | COSMICDAWN (306478), NSF | Collaborative Research: T... (0812790), NSF | Collaborative Research: T... (1138766), NSF | Collaborative Research: T... (1138729)

    We present the first constraints on cosmology from the Dark Energy Survey (DES), using weak lensing measurements from the preliminary Science Verification (SV) data. We use 139 square degrees of SV data, which is less than 3% of the full DES survey area. Using cosmic sh...

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  • publication . Article . Preprint . 2017
    Open Access English
    Authors:
    Andrew Pontzen; Michael Tremmel; Nina Roth; Hiranya V. Peiris; Amélie Saintonge; Marta Volonteri; Thomas P. Quinn; Fabio Governato;
    Persistent Identifiers
    Publisher: HAL CCSD
    Project: EC | COSMICDAWN (306478), NSF | Collaborative Proposal: D... (1410012), NSF | Collaborative Research: A... (1514868), EC | BLACK (614199), UKRI | DiRAC2: 100 Tflop/s HPC c... (ST/K000373/1)

    We show how the interplay between active galactic nuclei (AGN) and merger history determines whether a galaxy quenches star formation at high redshift. We first simulate, in a full cosmological context, a galaxy of total dynamical mass $10^{12}\,M_{\odot}$ at $z=2$. The...

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  • publication . Article . Preprint . 2016
    Open Access English
    Authors:
    Daniela Saadeh; Stephen M. Feeney; Andrew Pontzen; Hiranya V. Peiris; Jason D. McEwen;
    Persistent Identifiers
    Project: EC | COSMICDAWN (306478), UKRI | Signal analysis on the sp... (EP/M011852/1)

    We present a new framework for testing the isotropy of the Universe using cosmic microwave background data, building on the nested-sampling ANICOSMO code. Uniquely, we are able to constrain the scalar, vector and tensor degrees of freedom alike; previous studies only co...

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  • publication . Article . Preprint . 2016
    Open Access
    Authors:
    Jennifer Y. H. Chan; Boris Leistedt; Thomas D. Kitching; Jason D. McEwen;
    Persistent Identifiers
    Publisher: Institute of Electrical and Electronics Engineers (IEEE)
    Project: EC | COSMICDAWN (306478)

    Curvelets are efficient to represent highly anisotropic signal content, such as a local linear and curvilinear structure. First-generation curvelets on the sphere, however, suffered from blocking artefacts. We present a new second-generation curvelet transform, where sc...

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  • publication . Article . Preprint . 2015
    Open Access
    Authors:
    Mcewen, Jason D.; Leistedt, Boris; Büttner, Martin; Hiranya Peiris; Wiaux, Yves;
    Project: UKRI | Signal analysis on the sp... (EP/M011852/1), EC | COSMICDAWN (306478)

    We construct a directional spin wavelet framework on the sphere by generalising the scalar scale-discretised wavelet transform to signals of arbitrary spin. The resulting framework is the only wavelet framework defined natively on the sphere that is able to probe the di...

  • publication . Preprint . Article . 2016
    Open Access English
    Authors:
    Boris Leistedt; Daniel J. Mortlock; Hiranya V. Peiris;
    Persistent Identifiers
    Project: EC | COSMICDAWN (306478)

    Comment: 10 pages, matches version accepted in MNRAS, including new appendix describing the effect of Bayesian shrinkage in a simplified setting

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  • publication . Article . Preprint . 2016
    Open Access
    Authors:
    Boris Leistedt; Jason D. McEwen; Martin Büttner; Hiranya V. Peiris;
    Persistent Identifiers
    Publisher: Oxford University Press (OUP)
    Project: EC | COSMICDAWN (306478)

    We present new methods for mapping the curl-free (E-mode) and divergence-free (B-mode) components of spin 2 signals using spin directional wavelets. Our methods are equally applicable to measurements of the polarisation of the cosmic microwave background (CMB) and the s...

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  • publication . Article . 2016
    Open Access English
    Authors:
    Park, Y; Krause, E; Dodelson, S; Jain, B; Amara, A; Becker, MR; Bridle, SL; Clampitt, J; Crocce, M; Fosalba, P; ...
    Project: EC | TESTDE (291329), NSF | Collaborative Research: T... (1138766), EC | COSMICDAWN (306478), EC | COGS (240672), NSF | Physics Frontier Center a... (1125897)

    © 2016 American Physical Society. The joint analysis of galaxy-galaxy lensing and galaxy clustering is a promising method for inferring the growth function of large-scale structure. Anticipating a near future application of this analysis to Dark Energy Survey (DES) meas...

  • publication . Article . 2016
    Open Access English
    Authors:
    Johnson, M. C.; Wainwright, C. L.; Aguirre, A.; Peiris, H. V.;
    Publisher: IOP PUBLISHING LTD
    Project: NSF | Programs on Critical Prob... (1066293), EC | COSMICDAWN (306478)

    This is the third paper in a series establishing a quantitative relation between inflationary scalar field potential landscapes and the relic perturbations left by the collision between bubbles produced during eternal inflation. We introduce a new method for computing c...

26 research outcomes, page 1 of 3