Chemical Ecology

Schneider, Bernd

doi:10.1002/9780470034590.emrstm1341

Cited by 2 publications

(8 citation statements)

References 89 publications

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“…This induces an upturn in the mass function below the cutoff scale which is not converged when varying the resolution (Schneider et al 2012). We have looked for potential artifacts in our ODM simulations, using the method described in Lovell et al (2014) and Schneider (2014). As a result we did not find any excess compared to the CDM simulations.…”

Section: Simulation Resultsmentioning

confidence: 96%

“…Note that individual haloes can be resolved with at least 500 particles at scales around the main oscillation peak. Only such large numbers make it possible to reliably exclude the presence of artificial haloes which are known to populate simulations of both warm and mixed DM models (Schneider 2014).…”

Section: Numerical Simulationsmentioning

confidence: 99%

“…The extended Press-Schechter (EPS) approach provides a convenient semi-analytical tool for predictions of the halo mass function. Over the last decades, it has been shown to not only provide accurate results for ΛCDM cosmologies (W.Press & P.Schechter 1974; Bond et al 1991;Sheth et al 2001) but also for alternative DM models such as warm (Benson et al 2012;Schneider et al 2013) and mixed (Schneider 2014), or fuzzy (Marsh & Silk 2013;Schneider 2018) dark matter. Here we briefly summarize the recent development of EPS models for alternative DM scenarios before discussing their validity regarding ODM models.…”

Section: Press-schechter Formalismmentioning

confidence: 99%

“…Using a top-hat filter leads to reasonable predictions of the halo mass function in ΛCDM, but overestimates the abundance of small halos in DM models with small-scale power suppression. As shown by Schneider (2014), this problem can be solved by switching to a sharp-𝑘 filter, i.e. a spherical window function in Fourier space.…”

Section: Press-schechter Formalismmentioning

confidence: 99%

“…In this section, we look into the properties of ODM halos to make sure that they are well converged and that ODM simulations are not polluted by numerical artifacts. Our analysis is based on the work of Lovell et al (2014) and Schneider (2014).…”

Section: Appendix B: Convergence Test For the Mass Function And Analy...mentioning

confidence: 99%

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Dark acoustic oscillations: imprints on the matter power spectrum and the halo mass function

Schaeffer

Schneider

2021

Monthly Notices of the Royal Astronomical Society

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Many non-minimal dark matter scenarios lead to oscillatory features in the matter power spectrum induced by interactions either within the dark sector or with particles from the standard model. Observing such dark acoustic oscillations would therefore be a major step towards understanding dark matter. We investigate what happens to oscillatory features during the process of nonlinear structure formation. We show that at the level of the power spectrum, oscillations are smoothed out by nonlinear mode coupling, gradually disappearing towards lower redshifts. In the halo mass function, however, the oscillatory features remain visible until the present epoch. As a consequence, dark acoustic oscillations could be detectable in observations that are either based on the halo mass function or on the high-redshift power spectrum. We investigate the effect of such features on different observables, namely, the cluster mass function, the stellar-to-halo mass relation, and the Lyman-α flux power spectrum. We find that oscillatory features remain visible in all of these observables, but they are very extended and of low amplitude, making it challenging to detect them as distinct features in the data.

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Section: Simulation Resultsmentioning

confidence: 96%

Section: Numerical Simulationsmentioning

confidence: 99%

Section: Press-schechter Formalismmentioning

confidence: 99%

Section: Press-schechter Formalismmentioning

confidence: 99%

Section: Appendix B: Convergence Test For the Mass Function And Analy...mentioning

confidence: 99%

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Dark acoustic oscillations: imprints on the matter power spectrum and the halo mass function

Schaeffer

Schneider

2021

Monthly Notices of the Royal Astronomical Society

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Environmental Nuclear Magnetic Resonance Spectroscopy: An Overview and a Primer

Simpson

Soong

2017

Anal. Chem.

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NMR spectroscopy is a versatile tool for the study of structure and interactions in environmental media such as air, soil, and water as well as monitoring the metabolic responses of living organisms to an ever changing environment. Part review, part perspective, and part tutorial, this Feature is aimed at nonspecialists who are interested in learning more about the potential and impact of NMR spectroscopy in environmental research.

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Chemical Ecology

Cited by 2 publications

References 89 publications

Dark acoustic oscillations: imprints on the matter power spectrum and the halo mass function

Dark acoustic oscillations: imprints on the matter power spectrum and the halo mass function

Environmental Nuclear Magnetic Resonance Spectroscopy: An Overview and a Primer

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