Dynamical constraints on a dark matter spike at the Galactic centre from stellar orbits

被引：0
|
作者：
Lacroix, Thomas [1 ]
机构：
[1] Laboratoire Univers and Particules de Montpellier (LUPM), CNRS and Université de Montpellier (UMR-5299), Place Eugène Bataillon, Montpellier Cedex 05,34095, France
来源：
Astronomy and Astrophysics | 2018年 / 619卷
基金：
欧盟地平线“2020”;
关键词：
Gravitation - Dark Matter - Stars - Black holes;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In this work I use astrometric and spectroscopic data on the S2 star at the Galactic centre (GC) up to 2016 to derive specific constraints on the size of a dark matter (DM) spike around the central supermassive black hole Sgr A∗. These limits are the best direct constraints on a DM spike at the GC for non-annihilating dark matter and exclude a spike with radius greater than a few tens of parsecs for cuspy outer halos and a few hundred parsecs for cored outer halos. © ESO 2018.
引用
收藏
相关论文
共 50 条
  • [41] Oscillating dynamical friction on galactic bars by trapped dark matter
    Chiba, Rimpei
    Schoenrich, Ralph
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2022, 513 (01) : 768 - 787
  • [42] Dynamical friction in rotating ultralight dark matter galactic cores
    Gorkavenko, V. M.
    Barabash, O., V
    Gorkavenko, T., V
    Teslyk, O. M.
    Zaporozhchenko, A. O.
    Jia, Junji
    Yakimenko, A., I
    Gorbar, E., V
    CLASSICAL AND QUANTUM GRAVITY, 2024, 41 (23)
  • [43] From particles to orbits: precise dark matter density profiles using dynamical information
    Muni, Claudia
    Pontzen, Andrew
    Sanders, Jason L.
    Rey, Martin P.
    Read, Justin, I
    Agertz, Oscar
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2024, 527 (03) : 9250 - 9262
  • [44] Dynamical effects of cold dark matter subhalos on a galactic disk
    Hayashi, Hirohito
    Chiba, Masashi
    PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 2006, 58 (05) : 835 - 846
  • [45] Dynamical constraints on the dark matter distribution in the Milky Way
    Pato, Miguel
    Iocco, Fabio
    Bertone, Gianfranco
    JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2015, (12):
  • [46] Phenomenological constraints on axion models of dynamical dark matter
    Dienes, Keith R.
    Thomas, Brooks
    PHYSICAL REVIEW D, 2012, 86 (05):
  • [47] Dynamical modelling of the galactic bulge and bar: the Milky Way's pattern speed, stellar and dark matter mass distribution
    Portail, Matthieu
    Gerhard, Ortwin
    Wegg, Christopher
    Ness, Melissa
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2017, 465 (02) : 1621 - 1644
  • [48] DETECTING TRIAXIALITY IN THE GALACTIC DARK MATTER HALO THROUGH STELLAR KINEMATICS
    Rojas-Nino, Armando
    Valenzuela, Octavio
    Pichardo, Barbara
    Aguilar, Luis A.
    ASTROPHYSICAL JOURNAL LETTERS, 2012, 757 (02)
  • [49] A cold dark matter, stellar feedback, and the galactic halo abundance pattern
    Robertson, B
    Bullock, JS
    Font, AS
    Johnston, KV
    Hernquist, L
    ASTROPHYSICAL JOURNAL, 2005, 632 (02): : 872 - 881
  • [50] Apoastron shift constraints on dark matter distribution at the Galactic Center
    Zakharov, A. F.
    Nucita, A. A.
    De Paolis, F.
    Ingrosso, G.
    PHYSICAL REVIEW D, 2007, 76 (06)
12345