Warm-Hot Intergalactic Medium (WHIM)

Correlations between O VI Absorbers and Galaxies at Low Redshift, Rajib Ganguly, Renyue Cen, Taotao Fang, Kenneth Sembach (2008), ApJ, 678, L89

CosmoMHD: A Cosmological Magnetohydrodynamics Code, Shengtai Li, Hui Li and Renyue Cen (2008), ApJS, 174, 1

Cosmological Shock Waves in the Large Scale Structure of the Universe: Non-gravitational Effects Hyesung Kang, Dongsu Ryu, Renyue Cen and J.P. Ostriker (2007), ApJ, 669, 729

Where Are the Baryons? III: Non-Equilibrium Effects and Observables, Renyue Cen and Taotao Fang (2006), ApJ, 650, 573

Where Are the Baryons? II: Feedback Effects, Renyue Cen and Jeremiah P. Ostriker (2006), ApJ, 650, 560

Tracing the Warm Hot Intergalactic Medium in the local Universe M. Viel, E. Branchini, R. Cen, J.P. Ostriker, S. Matarrese, P. Mazzotta, B. Tully (2005), MNRAS, 360, 1110

Shock-Heated Gas in the Large-Scale Structure of the Universe, Hyesung Kang, Dongsu Ryu, Renyue Cen and Doojong Song (2005), ApJ, 620, 21

Background X-ray Emission From Hot Gas in CDM and LCDM Universes: Spectral Signatures, R. Cen, H. Kang, J.P. Ostriker and D. Ryu (1995), ApJ, 451, 436.

WHIM emission and the cluster soft excess: a model comparison J. Mittaz, R. Lieu, R. Cen, M. Bonamente (2004), ApJ, 617, 860

Detecting X-ray filaments in the low redshift Universe with XEUS and Constellation-X M. Viel, E. Branchini, R. Cen, S. Matarrese, P. Mazzotta, J.P. Ostriker (2003), MNRAS, 341, 792

Revealing the Warm-Hot Intergalactic Medium with OVI Absorption R. Cen, Todd M. Tripp, Jeremiah P. Ostriker and Edward B. Jenkins (2001), ApJ, 559, L5

Is There Still Room for Warm/Hot Gas? Simulating the X-ray Background Spectrum, L. A. Phillips, J. P. Ostriker and R. Cen (2001), ApJ, 554, L9

Baryons in the Warm-Hot Intergalactic Medium R. Dave, R. Cen, J.P. Ostriker, G.L. Bryan, L. Hernquist, N. Katz, D.H. Weinberg, M.L. Norman, & B. O'Shea (2001), ApJ, 552, 473

Metal Enrichment and Temperature of the Intergalactic Medium R. Cen &, G.L. Bryan (2000), ApJ Letters, 546, L81

Properties of Cosmic Shock Waves in Large Scale Structure Formation, F. Miniati, D. Ryu, H. Kang, T.W. Jones, R. Cen and J.P. Ostriker (2000), ApJ, 542, 608

Cosmic Chemical Evolution R. Cen and J.P. Ostriker (1999), ApJ Letters, 519, L109

Accuracy of Mesh Based Cosmological Hydrocodes: Tests and Corrections R. Cen and J.P. Ostriker (1999), ApJ, 517, 31

Where are the Baryons? R. Cen and J.P. Ostriker (1999), ApJ, 514, 1

A Comparison of Cosmological Hydrodynamic Codes, H. Kang, J.P. Ostriker, R. Cen, D. Ryu, L. Hernquist, A.E. Evrard, G.L. Bryan and M.L. Norman (1994), ApJ, 430, 83.

CDM+Lambda Model, Omega=0.37, Omega_b=0.049, sigma_8=0.80, L=100Mpc/h, Ncell=512^3

z=0.0	All Galaxies	All Gas	All Dark Matter
gas at z=0.0 sorted by temperature	T > 10^7 K	T = 10^5-10^7 K	T < 10^5 K
gas at z=0.0 sorted by metallicity	Z<0.003	Z=0.003-0.03	Z=0.03-0.3	Z>0.3
Galaxies at z=0 sorted by formation time	zf < 1	zf=1-2	zf=2-3	zf>3
gas at z = 0.5	T > 10^7 K	T = 10^5-10^7 K	T < 10^5 K
gas at z = 1.0	T > 10^7 K	T = 10^5-10^7 K	T < 10^5 K
gas at z = 3.0	T > 10^7 K	T = 10^5-10^7 K	T < 10^5 K
O VI Gas at z = 0.0	x > 1E-12	x > 1E-10	x > 1E-9
Metallicity Coded Gas Density z = 0.0	1st version	2nd version	3rd version
Metallicity Coded Gas Density z = 0.0	4th version

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Galaxy Formation Movie 

These movies show a 100 MPC simulation.



GAS EVOLUTION 

MPEG 512x512 160 frames (1.0 MBytes)
QuickTime 512x512 160 frames (16.0 MBytes)




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Data Files @z=0 

total gas density

metal density

gas temperature

vx

vy

vz