Cosmological simulations in MOND

The cluster scale halo mass function with light sterile neutrinos

G. W. Angus, A. Diaferio, B. Famaey, K. J. van der Heyden

    Research output: Contribution to journalArticle

    16 Citations (Scopus)

    Abstract

    We use our Modified Newtonian Dynamics (MOND) cosmological particle-mesh N-body code to investigate the feasibility of structure formation in a framework involving MOND and light sterile neutrinos in the mass range 11-300 eV: always assuming that Ωνs = 0.225 for H0 = 72 km s-1 Mpc-1. We run a suite of simulations with variants on the expansion history, cosmological variation of the MOND acceleration constant, different normalizations of the power spectrum of the initial perturbations and interpolating functions. Using various box sizes, but typically with ones of length 256 Mpc h-1, we compare our simulated halo mass functions with observed cluster mass functions and show that (i) the sterile neutrino mass must be larger than 30 eV to account for the low-mass (M200 < 1014.6M⊙ clusters of galaxies in MOND and (ii) regardless of sterile neutrino mass or any of the variations we mentioned above, it is not possible to form the correct number of high-mass (M200 > 1015.1M⊙ clusters of galaxies: there is always a considerable over production. This means that the ansatz of considering the weak-field limit of MOND together with a component of light sterile neutrinos to form structure from z ~ 200 fails. If MOND is the correct description of weak-field gravitational dynamics, it could mean that subtle effects of the additional fields in covariant theories of MOND render the ansatz inaccurate, or that the gravity generated by light sterile neutrinos (or by similar hot dark matter particles) is different from that generated by the baryons.

    Original languageEnglish
    Pages (from-to)202-211
    Number of pages10
    JournalMonthly Notices of the Royal Astronomical Society
    Volume436
    Issue number1
    DOIs
    Publication statusPublished - Nov 2013

    Fingerprint

    halos
    neutrinos
    simulation
    perturbation
    gravity
    gravitational fields
    boxes
    power spectra
    mesh
    baryons
    dark matter
    histories
    history
    gravitation
    galaxies
    expansion
    particle

    All Science Journal Classification (ASJC) codes

    • Astronomy and Astrophysics
    • Space and Planetary Science

    Cite this

    @article{5259afbd5ae64125bae8228beb139cf5,
    title = "Cosmological simulations in MOND: The cluster scale halo mass function with light sterile neutrinos",
    abstract = "We use our Modified Newtonian Dynamics (MOND) cosmological particle-mesh N-body code to investigate the feasibility of structure formation in a framework involving MOND and light sterile neutrinos in the mass range 11-300 eV: always assuming that Ωνs = 0.225 for H0 = 72 km s-1 Mpc-1. We run a suite of simulations with variants on the expansion history, cosmological variation of the MOND acceleration constant, different normalizations of the power spectrum of the initial perturbations and interpolating functions. Using various box sizes, but typically with ones of length 256 Mpc h-1, we compare our simulated halo mass functions with observed cluster mass functions and show that (i) the sterile neutrino mass must be larger than 30 eV to account for the low-mass (M200 < 1014.6M⊙ clusters of galaxies in MOND and (ii) regardless of sterile neutrino mass or any of the variations we mentioned above, it is not possible to form the correct number of high-mass (M200 > 1015.1M⊙ clusters of galaxies: there is always a considerable over production. This means that the ansatz of considering the weak-field limit of MOND together with a component of light sterile neutrinos to form structure from z ~ 200 fails. If MOND is the correct description of weak-field gravitational dynamics, it could mean that subtle effects of the additional fields in covariant theories of MOND render the ansatz inaccurate, or that the gravity generated by light sterile neutrinos (or by similar hot dark matter particles) is different from that generated by the baryons.",
    author = "Angus, {G. W.} and A. Diaferio and B. Famaey and {van der Heyden}, {K. J.}",
    year = "2013",
    month = "11",
    doi = "10.1093/mnras/stt1564",
    language = "English",
    volume = "436",
    pages = "202--211",
    journal = "Monthly Notices of the Royal Astronomical Society",
    issn = "0035-8711",
    publisher = "Oxford University Press",
    number = "1",

    }

    Cosmological simulations in MOND : The cluster scale halo mass function with light sterile neutrinos. / Angus, G. W.; Diaferio, A.; Famaey, B.; van der Heyden, K. J.

    In: Monthly Notices of the Royal Astronomical Society, Vol. 436, No. 1, 11.2013, p. 202-211.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - Cosmological simulations in MOND

    T2 - The cluster scale halo mass function with light sterile neutrinos

    AU - Angus, G. W.

    AU - Diaferio, A.

    AU - Famaey, B.

    AU - van der Heyden, K. J.

    PY - 2013/11

    Y1 - 2013/11

    N2 - We use our Modified Newtonian Dynamics (MOND) cosmological particle-mesh N-body code to investigate the feasibility of structure formation in a framework involving MOND and light sterile neutrinos in the mass range 11-300 eV: always assuming that Ωνs = 0.225 for H0 = 72 km s-1 Mpc-1. We run a suite of simulations with variants on the expansion history, cosmological variation of the MOND acceleration constant, different normalizations of the power spectrum of the initial perturbations and interpolating functions. Using various box sizes, but typically with ones of length 256 Mpc h-1, we compare our simulated halo mass functions with observed cluster mass functions and show that (i) the sterile neutrino mass must be larger than 30 eV to account for the low-mass (M200 < 1014.6M⊙ clusters of galaxies in MOND and (ii) regardless of sterile neutrino mass or any of the variations we mentioned above, it is not possible to form the correct number of high-mass (M200 > 1015.1M⊙ clusters of galaxies: there is always a considerable over production. This means that the ansatz of considering the weak-field limit of MOND together with a component of light sterile neutrinos to form structure from z ~ 200 fails. If MOND is the correct description of weak-field gravitational dynamics, it could mean that subtle effects of the additional fields in covariant theories of MOND render the ansatz inaccurate, or that the gravity generated by light sterile neutrinos (or by similar hot dark matter particles) is different from that generated by the baryons.

    AB - We use our Modified Newtonian Dynamics (MOND) cosmological particle-mesh N-body code to investigate the feasibility of structure formation in a framework involving MOND and light sterile neutrinos in the mass range 11-300 eV: always assuming that Ωνs = 0.225 for H0 = 72 km s-1 Mpc-1. We run a suite of simulations with variants on the expansion history, cosmological variation of the MOND acceleration constant, different normalizations of the power spectrum of the initial perturbations and interpolating functions. Using various box sizes, but typically with ones of length 256 Mpc h-1, we compare our simulated halo mass functions with observed cluster mass functions and show that (i) the sterile neutrino mass must be larger than 30 eV to account for the low-mass (M200 < 1014.6M⊙ clusters of galaxies in MOND and (ii) regardless of sterile neutrino mass or any of the variations we mentioned above, it is not possible to form the correct number of high-mass (M200 > 1015.1M⊙ clusters of galaxies: there is always a considerable over production. This means that the ansatz of considering the weak-field limit of MOND together with a component of light sterile neutrinos to form structure from z ~ 200 fails. If MOND is the correct description of weak-field gravitational dynamics, it could mean that subtle effects of the additional fields in covariant theories of MOND render the ansatz inaccurate, or that the gravity generated by light sterile neutrinos (or by similar hot dark matter particles) is different from that generated by the baryons.

    UR - http://www.scopus.com/inward/record.url?scp=84887100417&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=84887100417&partnerID=8YFLogxK

    U2 - 10.1093/mnras/stt1564

    DO - 10.1093/mnras/stt1564

    M3 - Article

    VL - 436

    SP - 202

    EP - 211

    JO - Monthly Notices of the Royal Astronomical Society

    JF - Monthly Notices of the Royal Astronomical Society

    SN - 0035-8711

    IS - 1

    ER -