The Millennium Run

Marinus Israel - Nienke van der Marel

December 2nd 2005 Overview zThe Millennium Run Project zProject Goals zMethod and initial parameters zResults {Quasar descendants {Two-point correlation function {Baryonic oscillations zSummary The Millennium Run Project zLargest simulation of cosmic structure growth zSimulates cold dark matter Projects Goals zConclude if current model of galaxy formation is consistent with surveys. zExplore the physics which give rise to galaxies. Z = 18.3, t=0.21Gy Z = 5.7, t=1.0Gy Z = 1.4, t=4.7Gy Z = 0, t=13.6Gy Methods and initial parameters z10 billion particles z860 M per particle zCube 2 billion ly per side zStarts at z=127 z11,000 timesteps to present First result zSurprisingly similar to observational surveys! zSMBs found in early Universe Results zQuasar descendants zTwo-point correlation function zBaryonic oscillations Quasar descendants zQuasars: most luminous objects zBrightest quasars <-> largest galaxies zMillennium Run: {z=0: 10-3 s.m. z=6.2: 10-1-10-2 s.m. {Must convert faster than 0,1.c2 {Today in richest clusters Galaxy two-point correlation z Measure of structure z δP = N[1+wθ)]δΩ

z Power-law -> coincidence!

Nature paper 2nd June 2005 Galaxy two-point correlation

Nature paper 2nd June 2005 Baryonic oscillations zPlasma in early Universe (< 300 000 yrs) zCoupled baryon-photon fluid zSound waves zSnapshot in CMB zInfluence density distribution Baryonic oscillations zImprint in power spectrum dark matter zImportant -> dark energy equation? zPresent in galaxy distribution z~3 zNow marginally able to detect zBetter measurements in future? Summary zMillennium Run: large simulation zMain goals: {Test consistency current models {Explore physicsδP = N[1+wθ)]δΩ zResults: {Quasar descendants {Galaxy two-point correlation {Baryonic oscillations Sources z ‘Simulations of the formation, evolution and clustering of galaxies and quasars’ by V. Springer et alii (Nature paper 2nd June 2005) z ‘Digitizing the universe’ by N.Y.Gnedin (Nature paper 2nd June 2005) z ‘FMOS detection of Cosmic Sound: A modest proposal’ by Karl Glazebrook z http://www.ifa.hawaii.edu/reu/2004research/blazek.html z http://www.mpa-garching.mpg.de/galform/press/