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Browsing The 2nd International Conference "Exploring the Energetic Universe 2019" by Issue Date

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Browsing The 2nd International Conference "Exploring the Energetic Universe 2019" by Issue Date

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  • Cosmic Growth Signatures of Modified Gravitational Strength 
    Denissenya, Mikhail; Linder, Eric V. (NURIS; Energetic Cosmos Laboratory, 2018-09-05)
    Cosmic growth of large scale structure probes the entire history of cosmic expansion and gravitational coupling. To get a clear picture of the effects of modification of gravity we consider a deviation in the coupling ...
  • The End of Cosmic Growth 
    Linder, Eric V.; Polarski, David (NURIS; Energetic Cosmos Laboratory, 2018-10-24)
    The growth of large scale structure is a battle between gravitational attraction and cosmic acceleration. We investigate the future behavior of cosmic growth under both general relativity (GR)and modified gravity during ...
  • No Slip CMB 
    Brush, Micah; Linder, Eric V.; Zumalacárregui, Miguel (NURIS; Energetic Cosmos Laboratory, 2018-10-29)
    No Slip Gravity is a simple modified gravity theory with only one free function and the interesting characteristic that -- unlike many modified gravity theories -- it suppresses growth. This allows it to fit current redshift ...
  • Will Gravitational Wave Sirens Determine the Hubble Constant? [Article] 
    Shafieloo, Arman; Keeley, Ryan E.; Linder, Eric V. (NURIS; Energetic Cosmos Laboratory, 2018-12-19)
    Lack of knowledge about the background expansion history of the Universe from independent observations makes it problematic to obtain a precise and accurate estimation of the Hubble constant H0 from gravitational wave ...
  • Twin LIGO/Virgo Detections of a Viable Gravitationally-Lensed Black Hole Merger 
    Broadhurst, Tom; Smoot, George F.; Diego, Jose M. (NURIS; Energetic Cosmos Laboratory, 2019-01-10)
    We identify a binary black hole (BBH) merger that appears to be multiply lensed by an intervening galaxy. The LIGO/Virgo events GW170809 and GW170814 have indistinguishable waveforms separated by 5 days, and overlap on the ...
  • Model independent expansion history from supernovae: Cosmology versus systematics 
    L'Huillier, Benjamin; Shafieloo, Arman; Linder, Eric V.; Kim, Alex G. (NURIS; Energetic Cosmos Laboratory, 2019-03-05)
    We examine the Pantheon supernovae distance data compilation in a model independent analysis to test the validity of cosmic history reconstructions beyond the concordance ΛCDM cosmology. Strong deviations are allowed by ...
  • No Run Gravity[Article] 
    Linder, Eric V. (NURIS; Energetic Cosmos Laboratory, 2019-03-05)
    Considering the dark energy/gravity landscape if next generation surveys of galaxies, cosmic microwave background radiation, and gravitational waves do not find clear modification of gravity, we develop No Run Gravity as ...
  • On the Use of Fast Radio Burst Dispersion Measures as Distance Measures[Article] 
    Kumar, Pawan; Linder, Eric V. (NURIS; Energetic Cosmos Laboratory, 2019-03-19)
    Fast radio bursts appear to be cosmological signals whose frequency-time structure provides a dispersion measure. The dispersion measure is a convolution of the cosmic distance element and the electron density, and contains ...
  • Joining bits and pieces of reionization history 
    Hazra, Dhiraj Kumar; Paoletti, Daniela; Finelli, Fabio; Smoot, George F. (NURIS; Energetic Cosmos Laboratory, 2019-04-02)
    Cosmic Microwave Background temperature and polarization anisotropies from Planck have estimated lower value of the optical depth to reionization (τ) compared to WMAP.
  • Developments in Cosmic Growth and Gravitation [Article] 
    Linder, Eric V. (NURIS; Energetic Cosmos Laboratory, 2019-04-23)
    Cosmic surveys of large scale structure have imaged hundreds of millions of galaxies and mapped the 3D positions of over a million. Surveys starting over the next few years will increase these numbers more than tenfold. ...
  • Modified Gravity Away from a Lambda CDM Background [Article] 
    Brando, Guilherme; Falciano, Felipe T.; Linder, Eric V.; Velten, Hermano E. S. (NURIS; Energetic Cosmos Laboratory, 2019-05-01)
    Within the effective field theory approach to cosmic acceleration, the background expansion can be specified separately from the gravitational modifications. We explore the impact of modified gravity in a background different ...
  • Debiasing Cosmic Gravitational Wave Sirens [Article] 
    Keeley, Ryan E.; Shafieloo, Arman; L'Huillier, Benjamin; Linder, Eric V. (NURIS; Energetic Cosmos Laboratory, 2019-05-27)
    Accurate estimation of the Hubble constant, and other cosmological parameters, from distances measured by cosmic gravitational wave sirens requires sufficient allowance for the dark energy evolution. We demonstrate how ...
  • Photometric Supernovae Redshift Systematics Requirements [Article] 
    Linder, Eric V.; Mitra, Ayan (NURIS; Energetic Cosmos Laboratory, 2019-07-03)
    Imaging surveys will find many tens to hundreds of thousands of Type Ia supernovae in the next decade, and measure their light curves. In addition to a need for characterizing their types and subtypes, a redshift is required ...