IEA PBH #1

Europe/Paris
Description

Join Zoom Meeting
https://u-paris.zoom.us/j/91268375577?pwd=SmtWMS9Jd0l3S2RVUm1xL3UwdThRdz09

Meeting ID: 912 6837 5577
Password: 128401

For Kazuya's talks, please connect to:

http://viavca.in2p3.fr/site.html

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Participants
Participants
    • 14:00 15:00
      APC theory talk: General relativistic weak-field limit and Newtonian N-body simulations 1h

      Abstract: Future galaxy surveys such as Euclid, LSST and SKA will cover larger and larger scales where general relativistic effects become important. On the other hand, our study of large scale structure still relies on Newtonian N-body simulations. I show how standard Newtonian N-body simulations can be interpreted in terms of the weak-field limit of general relativity. Our framework allows the inclusion of radiation perturbations and the non-linear evolution of matter. I show how to construct the weak-field metric by combining Newtonian simulations with results from Einstein-Boltzmann codes. I discuss observational effects on weak lensing and ray tracing, identifying important relativistic corrections. Finally, I briefly discuss recent developments of GR simulations in cosmology.

      Orateur: Kazuya Koyama
    • 15:15 16:00
      Turning in the landscape: a new mechanism for generating Primordial Black Holes 45m
      Orateur: Jacopo Fumagalli feat Lukas Witkowski (IAP)
    • 16:00 16:30
      Tea/coffee/whisky online break 30m
    • 16:30 17:15
      PBHs from the preheating instability 45m
      Orateur: Lucas Pinol (Institut d'Astrophysique de Paris)
    • 17:15 18:15
      Concluding discussions 1h