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Modified baryonic dynamics: two-component cosmological simulations with light sterile neutrinos

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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.
Keywords
cosmological simulations, modified gravity, dark matter simulations, galaxy clusters, MODIFIED NEWTONIAN DYNAMICS, PROBE WMAP OBSERVATIONS, TULLY-FISHER RELATION, HUBBLE-SPACE-TELESCOPE, GAUSSIAN RANDOM-FIELDS, GREATER-THAN 1, GALAXY CLUSTER, DARK-MATTER, LUMINOSITY FUNCTION, STELLAR FEEDBACK

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Citation

Please use this url to cite or link to this publication:

MLA
Angus, GW et al. “Modified Baryonic Dynamics: Two-component Cosmological Simulations with Light Sterile Neutrinos.” JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS 10 (2014): n. pag. Print.
APA
Angus, G., Diaferio, A., Famaey, B., Gentile, G., & van der Heyden, K. (2014). Modified baryonic dynamics: two-component cosmological simulations with light sterile neutrinos. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, (10).
Chicago author-date
Angus, GW, A Diaferio, B Famaey, Gianfranco Gentile, and KJ van der Heyden. 2014. “Modified Baryonic Dynamics: Two-component Cosmological Simulations with Light Sterile Neutrinos.” Journal of Cosmology and Astroparticle Physics (10).
Chicago author-date (all authors)
Angus, GW, A Diaferio, B Famaey, Gianfranco Gentile, and KJ van der Heyden. 2014. “Modified Baryonic Dynamics: Two-component Cosmological Simulations with Light Sterile Neutrinos.” Journal of Cosmology and Astroparticle Physics (10).
Vancouver
1.
Angus G, Diaferio A, Famaey B, Gentile G, van der Heyden K. Modified baryonic dynamics: two-component cosmological simulations with light sterile neutrinos. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS. 2014;(10).
IEEE
[1]
G. Angus, A. Diaferio, B. Famaey, G. Gentile, and K. van der Heyden, “Modified baryonic dynamics: two-component cosmological simulations with light sterile neutrinos,” JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, no. 10, 2014.
@article{6847061,
  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.},
  articleno    = {079},
  author       = {Angus, GW and Diaferio, A and Famaey, B and Gentile, Gianfranco and van der Heyden, KJ},
  issn         = {1475-7516},
  journal      = {JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS},
  keywords     = {cosmological simulations,modified gravity,dark matter simulations,galaxy clusters,MODIFIED NEWTONIAN DYNAMICS,PROBE WMAP OBSERVATIONS,TULLY-FISHER RELATION,HUBBLE-SPACE-TELESCOPE,GAUSSIAN RANDOM-FIELDS,GREATER-THAN 1,GALAXY CLUSTER,DARK-MATTER,LUMINOSITY FUNCTION,STELLAR FEEDBACK},
  language     = {eng},
  number       = {10},
  pages        = {17},
  title        = {Modified baryonic dynamics: two-component cosmological simulations with light sterile neutrinos},
  url          = {http://dx.doi.org/10.1088/1475-7516/2014/10/079},
  year         = {2014},
}

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