Abstract
In this article we continue to test cosmological models centred on Modified Newtonian Dynamics (MOND) with light sterile neutrinos, which could in principle be a way to solve the fine-tuning problems of the standard model on galaxy scales while preserving successful predictions on larger scales. Due to previous failures of the simple MOND cosmological model, here we test a speculative model where the modified gravitational field is produced only by the baryons and the sterile neutrinos produce a purely Newtonian field (hence Modified Baryonic Dynamics). We use two-component cosmological simulations to separate the baryonic N-body particles from the sterile neutrino ones. The premise is to attenuate the over-production of massive galaxy cluster halos which were prevalent in the original MOND plus light sterile neutrinos scenario. Theoretical issues with such a formulation notwithstanding, the Modified Baryonic Dynamics model fails to produce the correct amplitude for the galaxy cluster mass function for any reasonable value of the primordial power spectrum normalisation.
| Original language | English |
|---|---|
| Article number | 079 |
| Journal | Journal of Cosmology and Astroparticle Physics |
| Volume | 2014 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - Oct 1 2014 |
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All Science Journal Classification (ASJC) codes
- Astronomy and Astrophysics
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Modified Baryonic Dynamics : Two-component cosmological simulations with light sterile neutrinos. / Angus, G. W.; Diaferio, A.; Famaey, B.; Gentile, G.; Heyden, K. J Van Der.
In: Journal of Cosmology and Astroparticle Physics, Vol. 2014, No. 10, 079, 01.10.2014.Research output: Contribution to journal › Article
TY - JOUR
T1 - Modified Baryonic Dynamics
T2 - Two-component cosmological simulations with light sterile neutrinos
AU - Angus, G. W.
AU - Diaferio, A.
AU - Famaey, B.
AU - Gentile, G.
AU - Heyden, K. J Van Der
PY - 2014/10/1
Y1 - 2014/10/1
N2 - In this article we continue to test cosmological models centred on Modified Newtonian Dynamics (MOND) with light sterile neutrinos, which could in principle be a way to solve the fine-tuning problems of the standard model on galaxy scales while preserving successful predictions on larger scales. Due to previous failures of the simple MOND cosmological model, here we test a speculative model where the modified gravitational field is produced only by the baryons and the sterile neutrinos produce a purely Newtonian field (hence Modified Baryonic Dynamics). We use two-component cosmological simulations to separate the baryonic N-body particles from the sterile neutrino ones. The premise is to attenuate the over-production of massive galaxy cluster halos which were prevalent in the original MOND plus light sterile neutrinos scenario. Theoretical issues with such a formulation notwithstanding, the Modified Baryonic Dynamics model fails to produce the correct amplitude for the galaxy cluster mass function for any reasonable value of the primordial power spectrum normalisation.
AB - In this article we continue to test cosmological models centred on Modified Newtonian Dynamics (MOND) with light sterile neutrinos, which could in principle be a way to solve the fine-tuning problems of the standard model on galaxy scales while preserving successful predictions on larger scales. Due to previous failures of the simple MOND cosmological model, here we test a speculative model where the modified gravitational field is produced only by the baryons and the sterile neutrinos produce a purely Newtonian field (hence Modified Baryonic Dynamics). We use two-component cosmological simulations to separate the baryonic N-body particles from the sterile neutrino ones. The premise is to attenuate the over-production of massive galaxy cluster halos which were prevalent in the original MOND plus light sterile neutrinos scenario. Theoretical issues with such a formulation notwithstanding, the Modified Baryonic Dynamics model fails to produce the correct amplitude for the galaxy cluster mass function for any reasonable value of the primordial power spectrum normalisation.
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U2 - 10.1088/1475-7516/2014/10/079
DO - 10.1088/1475-7516/2014/10/079
M3 - Article
VL - 2014
JO - Journal of Cosmology and Astroparticle Physics
JF - Journal of Cosmology and Astroparticle Physics
SN - 1475-7516
IS - 10
M1 - 079
ER -