ModIC 2024 - Model-Independent Cosmology with gravitational waves, large-scale structure, and high-energy surveys.

Europe/Rome
IFPU (Trieste)

IFPU (Trieste)

Gor Oganesyan (Gran Sasso Science Institute), Riccardo Murgia (Gran Sasso Science Institute)
Description

Most of the observable consequences of Dark Energy (DE) follow from its impact on the expansion history of the universe, which in turn affects the growth of density perturbations, and the age of the universe. The expansion history of the universe maps to a distance-redshift relation
 

Gravitational Wave (GW) signals from binary compact object mergers act as standard sirens, as they provide a self-calibrated luminosity distance to the source, while redshift information can be obtained from their electromagnetic (EM) counterparts and/or inferred through LSS observations.

 

The next generation of GW detectors, such as Einstein Telescope (ET) and Cosmic Explorer (CE) will increase the detection rate of binary neutron star (BNS) mergers and binary black hole (BBH) mergers by an enormous factor, reaching more than 100,000 events per year. This will enable probing the expansion rate of the universe without the distance calibration issues that currently affect analyses with type Ia supernovae, thanks to joint GW-EM detections from BNS mergers. Concerning GW signals from BBH mergers, in the absence of optical emission, redshift can be obtained, e.g., via the intensity mapping (IM) of neutral hydrogen (HI) 21 cm emission.

 

The goal of this “Focus Week” is to discuss advanced model-independent data-driven methods to test the late-time expansion history of the universe (z<10) against the incredibly large sets of data that will soon be provided by ongoing and future GW, LSS, and high-energy (HE) surveys.
 

To this end, we bring together a group of international experts belonging to 3 scientific communities: theorists and experts on model-independent cosmological inference; experts on GW and multi-messenger (MM) astrophysics with high-energy (HE) γ-ray observations; experts on LSS probes of cosmology.

    • 10:00 10:40
      Welcome to IFPU
      Conveners: Gor Oganesyan (Gran Sasso Science Institute), Riccardo Murgia (Gran Sasso Science Institute)
    • 10:40 13:00
      Model-independent Cosmology: Theory & Methods
    • 13:00 15:00
      Lunch Break 2h
    • 15:00 18:00
      Model-independent Cosmology: Hands-on session
      • 15:00
        Model-independent methods for cosmological inference 40m
        Speaker: Arman Shafieloo
      • 15:40
        Cosmological inference with GPs 40m
        Speaker: Rodrigo Calderón
      • 16:20
        Coffee Break 20m
      • 16:40
        Brainstorming session 1h 20m
    • 10:00 13:00
      Dark Sirens: BBH x 21 cm HI IM
      • 10:00
        21 cm HI IM as a cosmological tool 40m
        Speaker: Marta Spinelli
      • 10:40
        Cosmology with BBHs and GWB 40m
        Speaker: Arianna Renzini
      • 11:20
        Coffee Break 20m
      • 11:40
        Brainstorming Session 1h 20m
    • 13:00 15:00
      Lunch Break 2h
    • 15:00 18:00
      Dark Sirens: Hands-on session
    • 09:15 13:00
      Bright Sirens: Joint GW-HE observations
      • 10:00
        Current status of GW-EM synergies 40m
        Speaker: Barbara Patricelli
      • 10:40
        Multimessenger astronomy in the ET era 40m
        Speaker: Biswajit Banerjee
      • 11:20
        Coffee Break 20m
      • 11:40
        Cosmology with BNSs 40m
        Speaker: Hsin-Yu Chen
      • 12:20
        Brainstorming Session 40m
    • 13:00 15:00
      Lunch Break 2h
    • 15:00 18:00
      Bright Sirens: Hands-on session
      • 15:00
        Model-independent cosmology with GWs and GRBs 1h 20m
        Speaker: Andrea Cozzumbo
      • 16:20
        Coffee Break 20m
      • 16:40
        Current status and future prospects of GRB detectors 1h 20m
        Speaker: Anastasia Tsvetkova
    • 10:00 10:40
      Model-independent Cosmology: Summary
      Convener: Rodrigo Calderón
    • 10:40 11:20
      Dark Sirens: Summary
      Convener: Ulyana Dupletsa
    • 11:20 11:40
      Coffee Break 20m
    • 11:40 12:20
      Bright Sirens: Summary
      Convener: Andrea Cozzumbo
    • 12:20 13:00
      Future Plans: Summary
    • 13:00 15:00
      Lunch Break 2h
    • 15:00 18:00
      Future Plans: Hands-on session
    • 10:00 11:30
      Future Plans: Hands-on session
    • 11:30 12:30
      IFPU Colloquium - Who's afraid of DE? 1h
      Speaker: Eric V. Linder
    • 12:30 15:00
      Lunch Break 2h 30m
    • 15:00 16:20
      Future Plans: Hands-on session
    • 16:20 16:40
      Coffee Break 20m
    • 16:40 18:00
      Concluding Remarks & Spritz
      Conveners: Gor Oganesyan, Riccardo Murgia