Available pre-trained predictors

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Available pre-trained predictors#

The picasso package comes with several pre-trained models, allowing direct inference of gas thermodynamics from halo properties and potential. They are all accessible in the picasso.predictors module.

576 runs#

The six models described in Kéruzoré+24.

  • Underlying cosmology: Planck 2020 (\(\Omega_{\rm cdm} = 0.26067\), \(\omega_{\rm b} = 0.02242\), \(h = 0.6766\), \(\sigma_8 = 0.8102\), \(n_s = 0.9665\), \(w = −1\)), \(\Omega_k = 0\), \(\Sigma m_\nu = 0\)

  • \(L_{\rm box} = 576 h^{−1} \; {\rm Mpc}\), \(L_{\rm box} = 576 \; h^{−1}{\rm Mpc}\), \(2304^3\) particles (Gravity-only particle mass: \(m_m = 1.34 \times 10^9 \; h^{-1}M_\odot\)).

  • Trained on \(M_{500c} > 10^{13.5} \; h^{-1}M_\odot\)

  • Full input vector (see details in table): \(\log_{10} (M_{200c} / 10^{14} \; h^{-1}M_\odot)\), \(c_{200c}\), \(\Delta x / R_{200c}\), \(c_{\rm acc.}/c_{200c}\), \(c_{\rm peak}/c_{200c}\), \(e\), \(p\), \(a_{\rm \rm lmm}\), \(a_{25}\), \(a_{50}\), \(a_{75}\), \(\dot{M} / (M_\odot / {\rm GYr})\).

Model name

In-code reference

Description

baseline

predictors.baseline_576

Uses full input vector, trained to reproduce non-radiative hydrodynamics profiles, with fixed \(c_\gamma = 0\)

compact

predictors.compact_576

Uses full input vector minus mass assembly history, trained to reproduce non-radiative hydrodynamics profiles, with fixed \(c_\gamma = 0\)

minimal

predictors.minimal_576

Uses halo mass and concentration, trained to reproduce non-radiative hydrodynamics profiles, with fixed \(c_\gamma = 0\)

subgrid

predictors.subgrid_576

Uses full input vector, trained to reproduce full-physics hydrodynamics profiles, with fixed \(c_\gamma = 0\)

NR + \(\Gamma(r)\)

predictors.nonradiative_Gamma_r_576

Uses full input vector, trained to reproduce non-radiative hydrodynamics profiles, with variable \(c_\gamma\)

SG + \(\Gamma(r)\)

predictors.subgrid_Gamma_r_576

Uses full input vector, trained to reproduce full-physics hydrodynamics profiles, with variable \(c_\gamma\)

See also:

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