BOSS ================================================ Compute the likelihood of supplied fsigma8(z=0.57), H(z=0.57), D_a(z=0.57), omegamh2, bsigma8(z=0.57) +-------------+--------------------------------+ | File | likelihood/boss/boss_rsd.py | +-------------+--------------------------------+ | Attribution | SDSS-III BOSS Team | +-------------+--------------------------------+ | URL | http://www.sdss3.org | +-------------+--------------------------------+ | Citations | http://arxiv.org/abs/1303.4486 | +-------------+--------------------------------+ This module calculates the likelihood using the CMASS only results from Chuang et al. 2013 for fsigma8(z=0.57), H(z=0.57), D_a(z=0.57), omegamh2, bsigma8(z=0.57). There are two modes: mode=0 give the fsigma8(z=0.57) likelihood only; mode=1 give the more general BOSS likelihood. Assumptions ----------- - SDSS-III CMASS DR9 dataset - When using mode = 1 CAMB must be run to output distance parameters and sigma8 - The transfer function must be scale-independent to use this simple formulation: no MG, massive nu, for example. Setup Parameters ---------------- .. list-table:: :header-rows: 1 * - Name - Type - Default - Description * - mode - int - 0 - Mode=0 for a f*sigma8 likelihood only. mode=1 uses the full results, a likelihood of H(z), D_A(z), ommh2, b * sigma_8, f * sigma_8] * - feedback - int - - Amount of output to print. 0 for no feedback. 1 for basic (default = 0) * - mean - real - 0.428 - Mean of f * sigma8 * - sigma - real - 0.066 - Error bar on f * sigma8 * - redshift - real - 0.57 - Redshift if measurement Input values ---------------- .. list-table:: :header-rows: 1 * - Section - Name - Type - Default - Description * - growth_parameters - d_z - real 1d - - Linear growth factor D(z) * - - f_z - real 1d - - Linear growth rate f(z) * - - z - real 1d - - Redshift of samples * - cosmological_parameters - omega_m - real - - Baryon + CDM density fraction today * - - sigma_8 - real - - Amplitude of linear matter power at 8/h Mpc at z=0 * - - bias - real - - Galaxy bias * - - h0 - real - - Hubble parameter H0/(100 km/s/Mpc) * - distances - z - real 1d - - Redshifts of samples * - - d_a - real 1d - - Angular diameter distance in Mpc * - - h - real 1d - - Hubble parameter with in units of Mpc Output values ---------------- .. list-table:: Output values :header-rows: 1 * - Section - Name - Type - Description * - likelihoods - BOSS_LIKE - real - Likelihood of supplied fsigma8(z=0.57), H(z=0.57), D_a(z=0.57), omegamh2, bsigma8(z=0.57)