European Einstein Toolkit Meeting 2024

Europe/Amsterdam
C 1.110 (SciencePark)

C 1.110

SciencePark

Science Park 904, 1098 XH Amsterdam
Description

We are pleased to announce the 2024 edition of the European Einstein Toolkit Meeting. The in-person workshop will be held at the Gravitation & Astroparticle Physics Amsterdam (https://www.grappa.amsterdam/) center of the University of Amsterdam and will provide an opportunity for researchers and students to learn about the Einstein Toolkit (https://einsteintoolkit.org/), a community-driven software platform of core computational tools to advance and support research in relativistic astrophysics and gravitational physics.

The workshop will offer a mixture of talks and tutorials, with the tutorials including basic tutorials for new users and more advanced topics. The talks will, likewise, provide information for new users and will highlight exciting science cases and the latest developments in numerical relativity. On the final day, we will discuss future directions and development. 

Registration:  Free to attend; Abstract submission and registration deadline is: Jun 20, 2024. In-Person attendance Only.

SOC: Philipp Mösta (chair), Tanja Hinderer, Lionel London, Miguel Zilhao.

LOC: Pablo Bosch, Jiřina Šálková, Anna Aldegheri, Sara Azizi, Sophia Schnauck, Philipp Mösta.

We thank our current sponsors IoP (UvA), API (UvA), Nikhef, LKBF.

By attending the Einstein Toolkit European Meeting 2024 you agree to the GRAPPA code of conduct.

 

Participants
  • Amit Kumar
  • Anna Aldegheri
  • Anuradha Samajdar
  • Ashwin Shirke
  • Ben de Vries
  • Bhooshan Uday Gadre
  • Brecht Slootmaekers
  • Bruno Giacomazzo
  • Christian Krueger
  • Erik Schnetter
  • Hristu Culetu
  • Ian Hawke
  • Isabel Cordero-Carrión
  • José Carlos Olvera Meneses
  • Justin Yu
  • Kenta Kiuchi
  • Khalil Pierre
  • Lieke Sippens
  • Maria Haney
  • Max Morris
  • Mihir Jain
  • Pablo Bosch Gomez
  • Peter Diener
  • Philippe Grandclement
  • RAGHVENDRA SINGH
  • Rodrigo Gil-Merino
  • Sara Azizi
  • Selin Üstündag
  • Shifang Li
  • Sophia Schnauck
  • Soumen Roy
  • Steven Brandt
  • Suryashekhar Kusari
  • Tanja Hinderer
  • Uddipta Bhardwaj
  • Vignesh Kumar Rajendran
  • Xisco Jimenez Forteza
Contact
    • 1
      Registration and arrival
    • 2
      Welcome
      Speaker: Philipp Moesta (University of Amsterdam)
    • 3
      Introduction to Numerical Relativity
      Speaker: Peter Diener
    • 4
      Introduction to Hydrodynamics
      Speaker: Bruno Giacomazzo
    • 11:00 AM
      Coffee
    • 5
      Numerical Methods in General Relativity
      Speaker: Isabel Cordero-Carrión
    • 12:30 PM
      Lunch
    • 6
      Introduction to the Einstein Toolkit 1
      Speaker: Steven Brandt
    • 7
      Tutorial: Download, compile and run a TOV star
      Speakers: Peter Diener, Steve Brandt
    • 4:00 PM
      Coffee
    • 8
      Tutorial: How to write a thorn for the Einstein Toolkit
      Speaker: Max Morris
    • 9
      Introduction to GRMHD
      Speaker: Kenta Kiuchi
    • 10
      Initial Data
      Speaker: Philippe Grandclément
    • 11:00 AM
      Coffee
    • 11
      Tutorial: Initial Data
      Speaker: Philippe Grandclément
    • 12:30 PM
      Lunch
    • 12
      Tutorial: CarpetX
      Speaker: Erik Schnetter
    • 13
      Tutorial: Generating a thorn with NRPy/Python
      Speaker: Steven Brandt
    • 4:00 PM
      Coffee
    • 14
      Multimessenger Astrophysics
      Speaker: Samaya Nissanke
    • 15
      NSNS/NSBH simulations
      Speaker: Sebastiano Bernuzzi
    • 11:00 AM
      Coffee
    • 16
      Turbulence in neutron-star merger simulations
      Speaker: Ian Hawke
    • 12:30 PM
      Lunch
    • Contributed Presentations
      • 17
        Dynamics of fast rotating neutron stars: Time evolution of linear perturbations in full general relativity

        We present a code that evolves perturbations of a rapidly rotating compact object in equilibrium in linearised full general relativity in time. We derive the perturbation equations for the spacetime in the Hilbert gauge leading to wave equations, while the hydrodynamical evolution is based on perturbations of the energy-momentum tensor. We use Kreiss-Oliger dissipation in order to achieve a stable time evolution. The code is parallelised using MPI and features favourable scaling with the number of threads. A modified version of the code employs individual grids for spacetime and perfect fluid in order to exploit the CFL criterion allowing for considerably larger time steps. The code features high accuracy at comparably low computational expense and we are able to extract the frequencies of nonaxisymmetric modes of compact objects with rotation rates up to the Kepler limit.

        Speaker: Christian Krueger (University of Tuebingen)
      • 18
        Simulating neutron stars under scalar tensor theories with the Einstein Toolkit

        We present a numerical implementation of the Einstein equations under scalar tensor theories (STT) based on the Einstein Toolkit framework. We focus on the Jordan frame, where the influence of the scalar fields on the Einstein equations can be expressed through a modified BSSN (Baumgarte-Shapiro-Shibata-Nakamura) formalism while preserving the standard evolution of matter fields. This approach is particularly useful in the study of neutron stars, as it takes advantage of the modularity of the Einstein Toolkit to include more microphysics, allowing to analyze the structure and properties of neutron stars within these extended theories of gravity and identify deviations from general relativity.

        Speaker: José Carlos Olvera Meneses (Tübingen University)
    • 3:00 PM
      Coffee
    • 19
      Discussion: What's most crucial to include in Einstein Toolkit for future?
    • Contributed Presentations
      • 20
        Gravitational Wave Signals from 3D GRMHD simulations of Core-Collapse Supernovae

        With the increasing number of gravitational wave detections by the LIGO-Virgo-KAGRA (LVK) Collaboration, as well as the prospect of the upcoming 3rd generation detectors such as the Einstein Telescope and Cosmic Explorer, we will need to be able to identify the gravitational wave source and extract properties of the source from the detector data. In order to do this effectively, we must develop templates of possible gravitational waves signals emitted from the expected sources. One of the events for which gravitational wave signatures can be detected are Core-collapse supernovae (CCSNe), some of the most energetic explosions in the universe. Gravitational wave observations from CCSNe, would allow us to probe for information from the stellar interior during collapse and the subsequent explosion. Through numerical simulations we can investigate these signatures and among other things gain a better insight into the mechanism driving the explosion. We seek to present results from some of the first production-level GPU based simulations of stellar core-collapse supernovae for a variety of pre-supernova model set-ups using the GPU-accelerated dynamical-spacetime general relativistic magneto-hydrodynamics code GRaM-X, which extends the general relativistic magneto-hydrodynamics (GRMHD) capability of the Einstein Toolkit. We model four CCSNe in 3D, without any symmetry assumptions, varying the rotation rate of the progenitor. Each of the simulations extends for about 100ms post-bounce and the respective gravitational wave signatures are extracted and analyzed for potential detectability with future detectors.

        Speaker: Sophia Schnauck (Anton Pannekoek Institute for Astronomy (API))
      • 21
        Overlapping gravitational-wave signals
        Speaker: Uddipta Bhardwaj
    • 11:00 AM
      Coffee
    • 22
      Gravitational Waves
      Speaker: Maria Haney
    • 12:30 PM
      Lunch
    • 23
      Gravitational Waves - Detections/Techniques/Parameter Estimation
      Speaker: Anuradha Samajdar
    • 3:30 PM
      Coffee
    • 24
      Discussion
    • Contributed Presentations
      • 25
        SpincsBSSN
        Speaker: Peter Diener
    • 10:30 AM
      Coffee
    • 26
      Discussion/Closeout