Cosmology WG meeting, GdR Gravitational Waves

Amphitheatre Pierre Gilles de Gennes (APC Paris)

Amphitheatre Pierre Gilles de Gennes

APC Paris

10 rue Alice Domon et Léonie Duquet, in the 13th district of Paris
  • Alexander Ganz
  • Andrii Neronov
  • Antoine Petiteau
  • Aurore Blelly
  • Baptiste Jost
  • Chiara Caprini
  • Clément Leloup
  • Cyril Pitrou
  • Danièle Steer
  • David Langlois
  • Delphine Porquet
  • Ed Porter
  • Eugeny Babichev
  • Filippo Vernizzi
  • Guillaume Faye
  • Hamza El Bouhargani
  • Hugo Roussille
  • Irina Dvorkin
  • Jacopo Fumagalli
  • Joe Silk
  • John Ronayne
  • Josquin Errard
  • Julien Froustey
  • Julien Grain
  • Jérémy Auffinger
  • Jérémy Neveu
  • Kalliopi Petraki
  • Leon VIDAL
  • Lucas Pinol
  • Marc Arène
  • Marc Besancon
  • Martin Bucher
  • Maxim Khlopov
  • Miguel Zumalacarregui
  • Mikel Falxa
  • Nikolaos Karnesis
  • Patrick Peter
  • Pierre Auclair
  • Radek Stompor
  • Sandrine Codis
  • Simone Mastrogiovanni
  • Suvodip Mukherjee
  • Sébastien Galtier
  • Sébastien Renaux-Petel
  • Vincent Vennin
  • Yuta Hamada
    • 09:30 10:30
      Gravitational waves from phase transitions 1h

      I will review the current understanding of how phase transitions in the early Universe generate gravitational waves, and
      their prospects for observation at LISA.

      Speaker: Prof. Hindmarsh Mark (Sussex U. & Helsinki U)
    • 10:40 11:00
      coffee break 20m
    • 11:00 12:00
      Primordial Black Holes and Gravitational Waves 1h

      We will discuss some aspects of primordial black holes, such as how they may form in the early universe, why they may compose all the dark matter, and how LISA will be able to detect the associated gravitational waves.

      Speaker: Prof. Riotto Antonio (Geneva University)
    • 12:15 13:45
      lunch break 1h 30m
    • 13:45 14:45
      New insights on cosmic strings 1h
      Speaker: Prof. Ringeval Christophe (Louvain University)
    • 15:00 15:30
      Stochastic Gravitational Wave Background 30m
      Speaker: Dr Irina Dvorkin (IAP)
    • 15:45 16:15
      The road to precision cosmology with gravitational waves and ground based detectors. 30m
      Speaker: Dr Simone mastrogiovanni (APC)
    • 16:30 17:00
      Kerr Primordial Black Holes: Towards New Constraints 30m

      The primordial black holes solution to the dark matter issue has lately received much attention due to the
      non-detection of dark matter particles (WIMPs or axions) in both direct and indirect channels. These
      black holes are expected to form at the very beginning of the Universe through the collapse of primordial
      density fluctuations. Depending on their mass distribution, they can have several observable consequences,
      thus allowing to set constraints on their density -- and the fraction of dark matter they can represent.
      The observations range from gravitational micro and femto-lensing to the emission of energetic particles
      through Hawking radiation. In this seminar, we will focus on the Hawking radiation constraints by extending
      them from the Schwarzschild primordial black holes (non-rotating) to the Kerr metric (rotating black holes)
      and from monochromatic mass distributions to extended ones. This work is based on the new public code BlackHawk
      that computes the Hawking spectra of Schwarzschild/Kerr black holes and that will be briefly presented.

      Short abstract:

      In this talk we will discuss new constraints on primordial black holes and the fraction of dark matter they can represent,
      based on the computation of the Hawking radiation emitted by extended mass functions of Kerr (rotating) holes.

      Speaker: Mr Jérémy Auffinger (IPNL Lyon)