Hydrodynamic Simulations of the Sunyaev-Zeldovich Effect(s)

By Volker Springel, M. White, L. Hernquist. 2000

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We have performed a sequence of high-resolution hydrodynamic simulations of structure formation in a ΛCDM model to study the thermal and kinetic Sunyaev-Zeldovich (SZ) effects. Including only adiabatic gas physics, we demonstrate that our simulations for the thermal effect are converged down to subarcminute scales. In this model, the angular power spectrum of cosmic microwave background (CMB) anisotropies induced by the thermal effect peaks at l ≃ 104, and reaches an amplitude just below current observational upper limits. Fluctuations due to the kinetic effect are a factor of ≃30 lower in power and peak at slightly smaller angular scales. We identify individual SZ sources and compute their counts as a function of source strength and angular size. We present a preliminary investigation of the consequences of an early epoch of energy injection, which tends to suppress power on small angular scales, while giving rise to additional power on large scales from the reheated intergalactic matter (IGM) at high redshift.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/3dc49b9289a0204ce952fb605ad7cc6c4f43033e

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Citations in the corpus

An MHD gadget for cosmological simulations (2008, methodology): “Starting from a well-established cosmological n-body smoothed particle hydrodynamic (SPH) code GADGET (Springel et al. 2001; Springel 2005) we present here the implementation of magneto-hydrodynamics, which allows us to explore the full size and dynamical range of state of the art cosmological simul”
Substructures in hydrodynamical cluster simulations (2008, methodology): “Therefore, for the sake of comparison, we excluded from ourSUBFINDgalaxies those having no stellar component.”
Astrophysical smooth particle hydrodynamics (2009, methodology): “For the various approaches we refer to the literature (Navarro and White, 1993; Mihos and Hernquist, 1994; Bate et al., 1995, 2003; Gerritsen and Icke, 1997; Sommer-Larsen et al., 1999; Springel, 2000, 2005; Springel et al., 2001; Thacker and Couchman, 2000; Scannapieco et al., 2001; Thacker et al.,”
The Cosmological simulation code GADGET-2 (2005, background): “This paper is about a novel version of the simulation code GADGET , which was written and publicly released in its original form four years ago (Springel et al., 2001), after which it found widespread use in the research of many c (cid:13) 0000 RAS simulation groups.”
SIMULATIONS OF THE SUNYAEV–ZEL'DOVICH POWER SPECTRUM WITH ACTIVE GALACTIC NUCLEUS FEEDBACK (2010, methodology): “Stacked SZ power spectra of translated-rotated cosmological boxes We randomly rotate and translate our simulation snapshots at different redshifts (da Silva et al. 2000; Springel et al. 2001, B0205).”
Numerical study of halo concentrations in dark-energy cosmologies (2003, unknown): “We modified and extended the proprietary GADGET-2 code accordingly, which is an extension of the publically available GADGET code (Springel et al. 2001c).”
MASSIVE HALOS IN MILLENNIUM GAS SIMULATIONS: MULTIVARIATE SCALING RELATIONS (2009, methodology): “We also calculate the global thermal SunyaevZel’dovich signal, Y , parameter, following the convention presented in da Silva et al. (2000); Springel et al. (2001); Kravtsov et al. (2006).”
Gamma Rays from Intergalactic Shocks (2002, methodology): “In our case, this requires SPH kernel interpolation (Springel et al. 2001b).”
The case for AGN feedback in galaxy groups (2009, background): “…simulating the properties of the hot gas in groups and clusters ab initio with millions to hundreds of millions of particles/cells (e.g., Evrard 1990; Thomas & Couchman 1992; Navarro et al. 1995; Bryan & Norman 1998; Kravtsov et al. 2000; Borgani et al. 2001; Springel et al. 2001; Kay et al. 2002).”
Simulating the Sunyaev-Zeldovich Effect(s): Including Radiative Cooling and Energy Injection by Galactic Winds (2002, methodology): “As we noted before (Springel et al. 2001a), filaments, while prominent in the partial maps, are largely 2 The missing factor of h in our code, which caused the maps from Springel et al. 2001a to be in error, has been corrected here. hidden in the high level of background arising from the summation…”
Planck 2013 results. XX. Cosmology from Sunyaev-Zeldovich cluster counts (2013, background): “III 2013) and from numerical simulations (Springel et al. 2001; da Silva et al. 2004; Motl et al. 2005; Nagai 2006; Kay et al. 2012) suggests that the SZ effect is an excellent mass proxy.”