The SPHINX project

The project

The SPHINX suite of cosmological radiation-hydrodynamical simulations is designed to simultaneously capture large-scale reionization and the escape of ionizing radiation from thousands of resolved galaxies during the first billion years of the Universe. Our volumes resolve haloes down to the atomic cooling limit and model the inter-stellar medium of galaxies with better than ≈ 10 parsec resolution. The project has numerous goals in improving our understanding of reionization and making predictions for future observations.

Core members of the team are:

Joakim Rosdahl (PI), Centre de Recherche Astrophysique de Lyon
Jérémy Blaizot, CRAL
Thibault Garel, CRAL
Martin Haehnelt, Cambridge University
Harley Katz, Oxford University
Taysun Kimm, Yonsei University
Léo Michel-Dansac, CRAL
Pierre Ocvirk, Observatoire Astronomique de Strasbourg
Romain Teyssier, University of Zürich

News

February 26, 2020February 26, 2020

Katz et al. (2020) has been accepted for publication

The second SPHINX paper has now been accepted for publication! Katz et al. (2020) describes how the process of reionization suppresses the accretion of gas filaments onto dwarf galaxies and hence quenches their growth.

March 14, 2019March 14, 2019

SPHINX20 is coming!

Thanks to PRACE , we have received 54 million core-hours to perform the next SPHINX simulation on the JUWELS supercomputer at JSC. The SPHINX20 volume has a width of 20 co-moving Mpc, and is 8 times larger than our previous largest volume. This will give us a much better sample of galaxies to study the variations in …

Continue reading “SPHINX20 is coming!”

January 24, 2018January 24, 2018

The first SPHINX paper is on ArXiv

The first project paper has been submitted for publication and posted on ArXiv. The paper is named “The SPHINX Cosmological Simulations of the First Billion Years: the Impact of Binary Stars on Reionisation“. Here, we present the setup and physics of our simulation suite and address the question of whether and how binary stars affect …

Continue reading “The first SPHINX paper is on ArXiv”

Animations

SPHINX20 volume (new!) (download) Full rotating volume for 20 cMpc wide volume with binary stars (BPASS v2.2.1). Clockwise from top left: hydrogen number density, temperature, ionising radiation flux (all density-weighted), and stellar populations.




Full volume with single stars (download)

Full rotating volume for 10 cMpc wide volume with single stars. Clockwise from top left: hydrogen number density, temperature, ionising radiation flux, and  ionized fraction  (all density-weighted).





Full volume with binary stars (download)

Full rotating volume for 10 cMpc wide volume with binary stars. Clockwise from top left: hydrogen number density, temperature, ionising radiation flux, and  ionized fraction  (all density-weighted).


Zoom with binary stars (download)

The animation shows wide (upper row) and close (lower row) zooms around the most massive halo in the run with binary stars.



Another zoom  (download)

The animation shows wide and close zooms around another massive halo in the run with binary stars.



Another zoom  (download)

The animation shows wide and close zooms around another massive halo in the run with binary stars.



Temperature evolution  

Movie without legend of temperature evolution of full 5 Mpc volume with binaries.



Photon flux   

Movie without legend of ionizing photon flux in full 5 Mpc volume with binaries.


Thanks to Pawel Biernacki for developing movie routines for the RAMSES code.





	
		
			
		


	
	
		
			
				Images
				
			


			
				Space for images and plots.