- The Lyalpha Forest Power Spectrum from the Sloan Digital Sky Survey
McDonald, Patrick; Seljak, Uros; Burles, Scott; Schlegel, David J.; Weinberg, David H.; Cen, Renyue; Shih, David; Schaye, Joop; Schneider, Donald P.; Bahcall, Neta A.; Briggs, John W.; Brinkmann, J.; Brunner, Robert J.; Fukugita, Masataka; Gunn, James E.; Ivezic, Zeljko; Kent, Stephen; Lupton, Robert H.; Vanden Berk, Daniel E. (2006),
ApJS, 163, 80
- Galactic Wind Effects on the Lyman-alpha Absorption in the Vicinity of Galaxies
J. Kollmeier, J. Miralda-Escude, R. Cen, J.P. Ostriker (2006),
ApJ, 638, 52
- The Linear Theory Power Spectrum from the Lyman-alpha Forest in the Sloan Digital Sky Survey
P. McDonald, U. Seljak, R. Cen, D. H. Weinberg, S. Burles, D. P. Schneider, D. J. Schlegel, N. A. Bahcall, J. Brinkmann, Z. Ivezic, S. Kent, D. E. Vanden Berk (2005),
ApJ, 635, 761
- Quantitative Signatures of Galactic Superwinds on Lyalpha Clouds and Metal-Line Systems
Renyue Cen, Kentaro Nagamine and Jeremiah P. Ostriker (2005),
ApJ, 635, 86
- Cosmological parameter analysis including SDSS Ly-alpha forest and galaxy bias: constraints on the primordial spectrum of fluctuations, neutrino mass, and dark energy
U. Seljak, A. Makarov, P. McDonald, S. Anderson, N. Bahcall, J. Brinkmann, S. Burles, R. Cen, M. Doi, J. Gunn, Z. Ivezic, S. Kent, R. Lupton, J. Munn, R. Nichol, J. Ostriker, D. Schlegel, M. Tegmark, D. Van den Berk, D. Weinberg, D. York (2005),
PRD, 71, 103515
- Physical effects on the Lyman-alpha forest flux power spectrum: damping wings, ionizing radiation fluctuations, and galactic winds
P. McDonald, U. Seljak, R. Cen, P. Bode, J. P. Ostriker (2005),
MNRAS, 360, 1471
- Metallicity Evolution of Damped Lya Systems in LCDM Cosmology
R. Cen, J.P. Ostriker, J.X. Prochaska, & A.M. Wolfe (2003),
ApJ, 598, 741
- Precision Cosmology from the Lyman-alpha Forest: Power Spectrum and Bispectrum
R. Mandelbaum, P. McDonald, U. Seljak, R. Cen (2003),
MNRAS, 344, 776
- Large-scale Correlation of Mass and Galaxies with the Lyman-alpha Forest Transmitted Flux
P. McDonald, J. Miralda-Escude and R. Cen (2002),
ApJ, 580, 42
- A Fast, Accurate and Robust Algorithm for Transferring Radiation in Three-Dimensional Space
R. Cen (2002),
ApJ Supplements, 141, 211
- Evolution of the Ionizing Radiation Background and
Star Formation in the Aftermath of Cosmological Reionization
R. Cen and P. McDonald (2002),
ApJ, 570, 457
- The Observed Probability Distribution Function, Power Spectrum, and Correlation Function of the Transmitted Flux in the Lyman-alpha Forest,
P.A. McDonald, J. Miralda-Escude, M. Rauch, W.L.W. Sargent, T.A. Barlow, R. Cen and J.P. Ostriker (2000),
ApJ, 543, 1
- On the Clustering of Lyman Alpha Clouds, High Redshift Galaxies and Underlying Mass,
R. Cen, S. Phelps, J. Miralda-Escud\'e and J.P. Ostriker (1998),
ApJ, 496, 577
- The Opacity of the Lyman Alpha Forest and Implications for Omega_{baryon} and the Ionizing Background,
M. Rauch, J. Miralda-Escud\'e, W.L.W. Sargent, T.A. Barlow D.H. Weinberg, L. Hernquist, N. Katz, R. Cen and J.P. Ostriker (1997),
ApJ, 489, 7
- Sizes, Shapes, Correlations of Lyman Alpha Clouds and Their Evolution in the LCDM Universe,
R. Cen and R.A. Simcoe (1997),
ApJ, 483, 8.
- Testing Cosmological Models with a Lyman Alpha Cloud Statistic: The Fraction of a Quasar Spectrum with High Lyman Alpha Optical Depth,
R. Cen (1997),
ApJ Letters, 479, L85.
- The Lyman Alpha Forest from Gravitational Collapse in the LCDM Model,
J. Miralda-Escude, R. Cen, J.P. Ostriker and M. Rauch (1996),
ApJ, 471, 582.
- Gravitational Collapse of Small-Scale Structure as the Origin
of the Lyman Alpha Forest,
R. Cen, J. Miralda-Escude, J.P. Ostriker and M. Rauch (1994),
ApJ Letters, 437, L9.
.
.
A New Simulation
CDM+Lambda Model, H0=67, Omega=0.30, Omega_b=0.035, Lambda=0.70, sigma_8=0.90, L=25Mpc/h, Ncell=768^3
This simulation includes galaxy/star formation, energy feedback from supernova explosions, ionization radiation from massive stars and metal recycling due to SNe/galactic winds
In addition, ``metals" are followed as a separate variable, not as an ad hoc add-on
______________________________________________________
______________________________________________________
Epoch redshift z=6
primary components
total gas density
dark matter density
stellar mass density
major species
H I density
He I density
He II density
metal density
dividing in temperature
cold gas (T<10^5K)
warm/hot gas (T=10^5-10^7K)
very hot gas (T>10^7K)
velocity, temperature imformation
gas temperature
divv vel(gas)
curl vel(gas)
______________________________________________________
______________________________________________________
Epoch redshift z=5
primary components
total gas density
dark matter density
stellar mass density
major species
H I density
He I density
He II density
metal density
dividing in temperature
cold gas (T<10^5K)
warm/hot gas (T=10^5-10^7K)
very hot gas (T>10^7K)
velocity, temperature imformation
gas temperature
divv vel(gas)
curl vel(gas)
cutting through the warm/hot gas
rho_b < 1
rho_b = 1-10
rho_b = 10-100
rho_b = 100-1000
rho_b > 1000
cutting through the cold gas
rho_b < 1
rho_b = 1-10
rho_b = 10-100
rho_b = 100-1000
rho_b > 1000
cutting through the very hot gas
rho_b < 1
rho_b = 1-10
rho_b = 10-100
rho_b = 100-1000
rho_b > 1000
dividing in metallicity
Z<0.001
Z=0.001-0.01
Z=0.01-0.1
Z=0.1-1.0
Z>1.0
cutting through the neutral hydrogen
T<10^4K
T=10^4-10^4.5K
T=10^4.5-10^5K
T=10^5-10^5.5K
T>10^5.5K
______________________________________________________
______________________________________________________
Epoch redshift z=4
primary components
total gas density
dark matter density
stellar mass density
major species
H I density
He I density
He II density
metal density
dividing in temperature
cold gas (T<10^5K)
warm/hot gas (T=10^5-10^7K)
very hot gas (T>10^7K)
velocity, temperature imformation
gas temperature
divv vel(gas)
curl vel(gas)
cutting through the warm/hot gas
rho_b < 1
rho_b = 1-10
rho_b = 10-100
rho_b = 100-1000
rho_b > 1000
cutting through the cold gas
rho_b < 1
rho_b = 1-10
rho_b = 10-100
rho_b = 100-1000
rho_b > 1000
cutting through the very hot gas
rho_b < 1
rho_b = 1-10
rho_b = 10-100
rho_b = 100-1000
rho_b > 1000
dividing in metallicity
Z<0.001
Z=0.001-0.01
Z=0.01-0.1
Z=0.1-1.0
Z>1.0
cutting through the neutral hydrogen
T<10^4K
T=10^4-10^4.5K
T=10^4.5-10^5K
T=10^5-10^5.5K
T>10^5.5K
cutting through the neutral helium
T<10^4K
T=10^4-10^4.5K
T=10^4.5-10^5K
T=10^5-10^5.5K
T>10^5.5K
______________________________________________________
______________________________________________________
Epoch redshift z=3
______________________________________________________
______________________________________________________
Epoch redshift z=2
primary components
total gas density
dark matter density
stellar mass density
major species
H I density
He I density
He II density
metal density
dividing in temperature
cold gas (T<10^5K)
warm/hot gas (T=10^5-10^7K)
very hot gas (T>10^7K)
velocity, temperature imformation
gas temperature
divv vel(gas)
curl vel(gas)
cutting through the warm/hot gas
rho_b < 1
rho_b = 1-10
rho_b = 10-100
rho_b = 100-1000
rho_b > 1000
cutting through the cold gas
rho_b < 1
rho_b = 1-10
rho_b = 10-100
rho_b = 100-1000
rho_b > 1000
cutting through the very hot gas
rho_b < 1
rho_b = 1-10
rho_b = 10-100
rho_b = 100-1000
rho_b > 1000
dividing in metallicity
Z<0.001
Z=0.001-0.01
Z=0.01-0.1
Z=0.1-1.0
Z>1.0
cutting through the neutral hydrogen
T<10^4K
T=10^4-10^4.5K
T=10^4.5-10^5K
T=10^5-10^5.5K
T>10^5.5K
cutting through the neutral helium
T<10^4K
T=10^4-10^4.5K
T=10^4.5-10^5K
T=10^5-10^5.5K
T>10^5.5K
cutting through the metals
T<10^4K
T=10^4-10^5K
T=10^5-10^6K
T=10^6-10^7K
T>10^7K
______________________________________________________
______________________________________________________
Epoch redshift z=1
primary components
total gas density
dark matter density
stellar mass density
major species
H I density
He I density
He II density
metal density
dividing in temperature
cold gas (T<10^5K)
warm/hot gas (T=10^5-10^7K)
very hot gas (T>10^7K)
velocity, temperature imformation
gas temperature
divv vel(gas)
curl vel(gas)
cutting through the warm/hot gas
rho_b < 1
rho_b = 1-10
rho_b = 10-100
rho_b = 100-1000
rho_b > 1000
cutting through the cold gas
rho_b < 1
rho_b = 1-10
rho_b = 10-100
rho_b = 100-1000
rho_b > 1000
cutting through the very hot gas
rho_b < 1
rho_b = 1-10
rho_b = 10-100
rho_b = 100-1000
rho_b > 1000
dividing in metallicity
Z<0.001
Z=0.001-0.01
Z=0.01-0.1
Z=0.1-1.0
Z>1.0
cutting through the neutral hydrogen
T<10^4K
T=10^4-10^4.5K
T=10^4.5-10^5K
T=10^5-10^5.5K
T>10^5.5K
cutting through the neutral helium
T<10^4K
T=10^4-10^4.5K
T=10^4.5-10^5K
T=10^5-10^5.5K
T>10^5.5K
cutting through the metals
T<10^4K
T=10^4-10^5K
T=10^5-10^6K
T=10^6-10^7K
T>10^7K
______________________________________________________
______________________________________________________
Epoch redshift z=0.5
primary components
total gas density
dark matter density
stellar mass density
major species
H I density
He I density
He II density
metal density
dividing in temperature
cold gas (T<10^5K)
warm/hot gas (T=10^5-10^7K)
very hot gas (T>10^7K)
velocity, temperature imformation
gas temperature
divv vel(gas)
curl vel(gas)
cutting through the warm/hot gas
rho_b < 1
rho_b = 1-10
rho_b = 10-100
rho_b = 100-1000
rho_b > 1000
cutting through the cold gas
rho_b < 1
rho_b = 1-10
rho_b = 10-100
rho_b = 100-1000
rho_b > 1000
cutting through the very hot gas
rho_b < 1
rho_b = 1-10
rho_b = 10-100
rho_b = 100-1000
rho_b > 1000
dividing in metallicity
Z<0.001
Z=0.001-0.01
Z=0.01-0.1
Z=0.1-1.0
Z>1.0
cutting through the neutral hydrogen
T<10^4K
T=10^4-10^4.5K
T=10^4.5-10^5K
T=10^5-10^5.5K
T>10^5.5K
cutting through the neutral helium
T<10^4K
T=10^4-10^4.5K
T=10^4.5-10^5K
T=10^5-10^5.5K
T>10^5.5K
cutting through the metals
T<10^4K
T=10^4-10^5K
T=10^5-10^6K
T=10^6-10^7K
T>10^7K
______________________________________________________
______________________________________________________
Epoch redshift z=0.3
primary components
total gas density
dark matter density
stellar mass density
major species
H I density
He I density
He II density
metal density
dividing in temperature
cold gas (T<10^5K)
warm/hot gas (T=10^5-10^7K)
very hot gas (T>10^7K)
velocity, temperature imformation
gas temperature
divv vel(gas)
curl vel(gas)
cutting through the warm/hot gas
rho_b < 1
rho_b = 1-10
rho_b = 10-100
rho_b = 100-1000
rho_b > 1000
cutting through the cold gas
rho_b < 1
rho_b = 1-10
rho_b = 10-100
rho_b = 100-1000
rho_b > 1000
cutting through the very hot gas
rho_b < 1
rho_b = 1-10
rho_b = 10-100
rho_b = 100-1000
rho_b > 1000
dividing in metallicity
Z<0.001
Z=0.001-0.01
Z=0.01-0.1
Z=0.1-1.0
Z>1.0
cutting through the neutral hydrogen
T<10^4K
T=10^4-10^4.5K
T=10^4.5-10^5K
T=10^5-10^5.5K
T>10^5.5K
cutting through the neutral helium
T<10^4K
T=10^4-10^4.5K
T=10^4.5-10^5K
T=10^5-10^5.5K
T>10^5.5K
cutting through the metals
T<10^4K
T=10^4-10^5K
T=10^5-10^6K
T=10^6-10^7K
T>10^7K
______________________________________________________
______________________________________________________
______________________________________________________
Epoch redshift z=0
______________________________________________________
______________________________________________________
Evolution of gas, dark matter and galaxies
gas density
z=6
z=5
z=4
z=3
z=2
z=1
z=0.5
z=0.3
z=0
dark matter density
z=6
z=5
z=4
z=3
z=2
z=1
z=0.5
z=0.3
z=0
stellar density
z=6
z=5
z=4
z=3
z=2
z=1
z=0.5
z=0.3
z=0
gas temperature
z=6
z=5
z=4
z=3
z=2
z=1
z=0.5
z=0.3
z=0
HI
z=6
z=5
z=4
z=3
z=2
z=1
z=0.5
z=0.3
z=0
HeI
z=6
z=5
z=4
z=3
z=2
z=1
z=0.5
z=0.3
z=0
div V (gas)
z=6
z=5
z=4
z=3
z=2
z=1
z=0.5
z=0.3
z=0
______________________________________________________
A sequence of neutral hydrogen evolution from z=25 to z=2.6
______________________________________________________
A Lyman Alpha Cloud Formation MovieThe movie shows a snapshot of neutral hydrogen from the above simulation at redshift z=2.6
Neutral Hydrogen Evolution
QuickTime Movie (106.0 MBytes)
______________________________________________________
Figure 1 for astro-ph/0106204
fig1a.ps
fig1b.ps
