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XXIV SIGRAV Conference on General Relativity and Gravitation

Sep 7 – 9, 2021
Urbino/Palazzo Battiferri
Europe/Rome timezone

Contacts

Session

Cosmology

6
Sep 9, 2021, 9:00 AM
Urbino/Palazzo Battiferri

Urbino/Palazzo Battiferri

Via Aurelio Saffi, 42, 61029 Urbino PU

Conveners

Cosmology

  • Gabriele Gionti, S.J. (Vatican Observatory (Specola Vaticana))

Presentation materials

There are no materials yet.

  1. 34. Primordial gravitational waves from CMB - observational perspectives
    Prof. Francesco Piacentini
    9/9/21, 9:00 AM

    I will briefly review the impact of primordial gravitational waves into CMB polarization, and present some of the observational efforts in which I am involved.
    I will describe the observational target and the most relevant measurement issues due to sensitivity, foreground emission and systematic effects.
    In particular I will focus on the LSPE ground+balloon experiment, and on the LiteBIRD...

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  2. 35. Neutrino Cosmology: current status and future prospects
    Prof. Martina Gerbino
    9/9/21, 9:30 AM

    Neutrino unknowns are clear gateways to new physics. Cosmology offers a
    unique arena to unveil neutrino secrets in a way that is separate from,
    but complementary to astrophysical and terrestrial searches. The next
    generation of cosmological surveys will supersede the current, which is
    already highly sensitive to neutrino fundamental properties. I will
    present the state of the art,...

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  3. 36. Models of galaxy formation and evolution constrained by gravitational-wave events
    Luca Graziani
    9/9/21, 10:00 AM

    The recent detection of gravitational waves (GW) by the LIGO/VIRGO Collaboration opened a new era of gravitational astronomy with an unavoidable impact on theoretical models of galaxy formation and evolution. The astrophysical nature and origin of compact objects generating GW events are in fact deeply connected with the property of the galactic environment in which their stellar progenitors...

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  4. 55. Cosmology with LIGO/Virgo dark sirens and galaxy catalogs
    Francesco Iacovelli (Université de Genève)
    9/9/21, 11:00 AM
    Gravity theory

    We will briefly present a detailed study of the methodology for correlating ‘‘dark sirens'' (compact binaries coalescences without electromagnetic counterpart) with galaxy catalogs. Several improvements on the current state of the art will be examined and applied to the published LIGO/Virgo gravitational wave (GW) detections, studying several sources of systematic errors. We will give the best...

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  5. 65. Primordial black hole formation
    Ilia Musco (Istituto Nazionale di Fisica Nucleare)
    9/9/21, 11:30 AM
    Gravity theory

    Primordial black holes can form in the early Universe from the collapse of cosmological perturbations after the cosmological horizon crossing. They are possible candidates for the dark matter as well as for the seeds of supermassive black holes observed today in the centre of galaxies. In calculations of spherically symmetric collapse, a Lagrangian relativistic hydrodynamical code is used to...

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  6. 49. FLRW quantum cosmology from a tomographic point of virw
    Cosimo Stornaiolo (Istituto Nazionale di Fisica Nucleare)
    9/9/21, 12:00 PM
    Gravity theory

    The introduction of a perfect fluid source in quantum cosmological models has permitted to write down the Wheeler De Witt equation in a form similar to the Schroedinger equation, by the introduction of a fiducial time. In the first part of the talk I introduce the formalism and discuss the nature of this fiducial time. In the second part I introduce the corresponding tomograms in order to...

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