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H 1 Tracing the dark matter web

Auteurs : Shandarin, Sergei (Auteur de la Conférence)
CIRM (Editeur )

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    Résumé : Dark matter (DM) constitutes almost 85% of all mass able to cluster into gravitationally bound objects. Thus it has played the determining role in the origin and evolution of the structure in the universe often referred to as the Cosmic Web. The dark matter component of the Cosmic Web or simply the Dark Matter Web is considerably easier to understand theoretically than the baryonic component of the web if one assumes that DM interacts only gravitationally. One of the major differences between the DM and baryonic webs consists in the multi stream structure of the DM web. Thus it allows to use three diagnostic fields that do not present in the baryonic web: the number of streams field in Eulerian space, the number of flip flops field in Lagrangian space, and the caustic structure in the both. Although these characteristics have been known for a long time their systematic studies as fields started only a few years ago. I will report new recent results of numerical studies of the three fields mentioned above and also discuss the features of the DM web they have unveil.

    Codes MSC :
    83F05 - Relativistic cosmology
    85A15 - Galactic and stellar structure
    85A25 - Radiative transfer (astronomy and astrophysics)
    85A40 - Cosmology

    Informations sur la rencontre

    Nom du congrès : Collisionless Boltzmann (Vlasov) equation and modeling of self-gravitating systems and plasmas / Boltzmann sans collisions, Vlasov et modélisation des systèmes auto-gravitants et des plasmas
    Organisteurs Congrès : Colombi, Stéphane ; Devriendt, Julien ; Elskens, Yves ; Taruya, Atsushi ; Triay, Roland
    Dates : 30/10/2017 - 03/11/2017
    Année de la rencontre : 2017
    URL Congrès : http://conferences.cirm-math.fr/1683.html

    Citation Data

    DOI : 10.24350/CIRM.V.19238603
    Cite this video as: Shandarin, Sergei (2017). Tracing the dark matter web. CIRM. Audiovisual resource. doi:10.24350/CIRM.V.19238603
    URI : http://dx.doi.org/10.24350/CIRM.V.19238603


    Voir aussi

    Bibliographie

    1. Ramachandra, N.S., & Shandarin, S.F. (2017). Topology and geometry of the dark matter web: a multistream view. Monthly Notices of the Royal Astronomical Society, 467(2), 1748–1762 - https://doi.org/10.1093/mnras/stx183

    2. Shandarin, S.F., & Medvedev, M.V. (2014). Tracing the Cosmic Web substructure with Lagrangian submanifold. - https://arxiv.org/abs/1409.7634

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