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WMAP1 cosmological parameters

The calibrations have been derived from the "Horizon-MareNostrum" hydrodynamical simulation using WMAP1 cosmological parameters (Spergel et al. 2003):

ΩM=0.3

ΩΛ=0.7

ΩB=0.045

H0=70.0 km/s/Mpc

n=1

σ8=0.9

The probability distribution P(F_s|1+δ_s):
- F_s: Flux smoothed at the BOSS resolution.
- 1+δ_s: DM overdensity smoothed at σ=0.3, 0.5, 0.696 or 1.0 Mph/h.

Ex: DM, Flux: real space, for several choices of 1+δs

Download binary or fits files (~7.7M):

DM smoothing	Real-space	Redshift-space
0.3 Mpc/h	.bin      .fits	.bin      .fits
0.5 Mpc/h	.bin      .fits	.bin      .fits
0.696 Mpc/h	.bin      .fits	.bin      .fits
1.0 Mpc/h	.bin      .fits	.bin      .fits

The code read_prob.c can be used to read the binary files.

NB: The transmitted Flux field is always smoothed at the BOSS scales (0.696 Mpc/h). We also do not provide tabulations for real-space DM density field to predict the redshift-space spectra.

Structure of binary files:

The binary files are organized as follows (blocks are delimited by dummy variables indicating the size of the blocks for FORTRAN compatibility)

field	type	size	comment
dummy	int(4B)	1	= 8
F_space	int(4B)	1	0: real-space 1: redshift-space
DM_space	int(4B)	1	0: real-space 1: redshift-space
dummy	int(4B)	1	= 8
dummy	int(4B)	1	= 8
F_smoothing	float(4B)	1	0.696 Mpc/h (BOSS)
DM_smoothing	float(4B)	1	0.3, 0.5, 0.696 or 1.0 Mpc/h
dummy	int(4B)	1	= 8
dummy	int(4B)	1	= 8
dim1	int(4B)	1	dimension of P(Fs|1+δs) at a given 1+δs
dim2	int(4B)	1	dimension of the arrays 1+δs
dummy	int(4B)	1	= 8
dummy	int(4B)	1	= 8
min_log_rho	float(4B)	1	minimum value of log(1+δs)=Δmin
max_log_rho	float(4B)	1	maximum value of log(1+δs)=Δmax
dummy	int(4B)	1	= 8
dummy	int(4B)	1	= dim1*dim2*8
P	double(8B)	dim1*dim2	1...dim1:                 P(Fs|Δ1) 1+dim1...2dim1:   P(Fs|Δ2)                         .                         . where: Δ=log(1+δs) Δmin <Δ1< Δmin+b Δmin+b <Δ2< Δmin+2b etc... b=(Δmax-Δmin)/dim2
dummy	int(4B)	1	= dim1*dim2*8

Structure of fits files (example):

SIMPLE	=	T	/	true FITS file
BITPIX	=	-64	/	bits per pixel
NAXIS	=	2	/	number of dimensions
NAXIS1	=	1000	/	length of 1st dimension: P(F|1+δs)
NAXIS2	=	1000	/	length of 2nd dimension: 1+δs
F_SPACE	=	Redshift-space	/	Trans. Flux field is computed in redshift-space
F_SPACE	=	Redshift-space	/	DM density field is computed in redshift-space
F_SMOOTH	=	0.696	/	Flux smoothing scale in Mpc/h (here BOSS scale)
DM_SMOOTH	=	0.300	/	DM smoothing scale in Mpc/h
MIN_LOG_RHO (Δmin)	=	-1.441020	/	Minimal value of log10 of the DM overdensity
MAX_LOG_RHO (Δmax)	=	1.530900	/	Maximal value of log10 of the DM overdensity
TAB = array(double, NAXIS1, NAXIS2) ex: TAB(542,)=P(F|Δ542) where: Δ=log(1+δs) Δmin+541*b <Δ542< Δmin+b*542 b=(Δmax-Δmin)/NAXIS2

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