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

Abstract

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 DM 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.

8 pages, 5 figures. Matches version accepted in A&A. Details on the model in Appendix

References in corpus (9)

• The mass distribution and gravitational potential of the Milky Way
• Detection of the gravitational redshift in the orbit of the star S2 near the Galactic centre massive black hole
• An Update on Monitoring Stellar Orbits in the Galactic Center
• Dynamical modelling of the Galactic bulge and bar: the Milky Way's bar pattern speed, stellar, and dark matter mass distribution
• An Improved Distance and Mass Estimate for Sgr A* from a Multistar Orbit Analysis
• Multi-wavelength signals of dark matter annihilations at the Galactic center
• Galactic Center Gamma-Ray Excess from Dark Matter Annihilation: Is There A Black Hole Spike?
• Apoastron Shift Constraints on Dark Matter Distribution at the Galactic Center
• Stellar Orbit Constraints on Neutralino Annihilation at the Galactic Center

Cited by in corpus (49)

• Detection of the Schwarzschild precession in the orbit of the star S2 near the Galactic centre massive black hole
• Radio Signals from Axion Dark Matter Conversion in Neutron Star Magnetospheres
• Solutions of the Einstein equations for a black hole surrounded by a galactic halo
• Modelling the Sgr A* Black Hole Immersed in a Dark Matter Spike
• Dehnen halo effect on a black hole in an ultra-faint dwarf galaxy
• Looking for ultralight dark matter near supermassive black holes
• Scalar field effects on the orbit of S2 star
• Gravitational waves from bodies orbiting the Galactic Center black hole and their detectability by LISA
• Black hole merger simulations in wave dark matter environments
• Towards Robust Constraints on Axion Dark Matter using PSR J1745-2900
• The dark mass signature in the orbit of S2
• Indirect Evidence for Dark Matter Density Spikes around Stellar-Mass Black Holes
• A Search for Axionic Dark Matter Using the Magnetar PSR J1745-2900
• Exploring dark matter spike distribution around the Galactic centre with stellar orbits
• Using the motion of S2 to constrain scalar clouds around SgrA*
• Bounding the mass of ultralight bosonic Dark Matter particles with the motion of the S2 star around Sgr A*
• The Galactic Center as a laboratory for theories of gravity and dark matter
• Constraining Wormhole Geometries using the Orbit of S2 Star and the Event Horizon Telescope
• Neutron Stars and Dark Matter
• Constraining ultralight bosonic dark matter with Keck observations of S2's orbit and kinematics
• On the parameters of the spherically symmetric parametrized Rezzolla-Zhidenko spacetime through solar system tests, orbit of S2 star about Sgr A${}^{\star }$, and quasiperiodic oscillations
• Periapsis shifts in dark matter distribution around a black hole
• On the change of old neutron star masses with galactocentric distance
• Waves from the Centre: Probing PBH and other Macroscopic Dark Matter with LISA
• PPN motion of the S-stars around Sgr A*
• Examining the effects of dark matter spikes on eccentric intermediate mass ratio inspirals using N-body simulations
• Equatorial and polar quasinormal modes and quasiperiodic oscillations of quantum deformed Kerr black hole
• Multi-TeV dark matter density in the inner Milky Way halo: spectral and dynamical constraints
• Orbits of particles with magnetic dipole moment around magnetized Schwarzschild black holes: Applications to S2 star orbit
• Rapidly spinning dark matter-admixed neutron stars
• Listening for Dark Photon Radio from the Galactic Centre
• Origin of the DAMPE 1.4 TeV peak
• Multimessenger TeV Dark Matter: a mini review
• Dark Matter Constraints from the Eccentric Supermassive Black Hole Binary OJ 287
• Prospects for probing small-scale dark matter models with pulsars around Sagittarius A*
• Dark Matter Spike surrounding Supermassive Black Holes Binary and the Nanohertz Stochastic Gravitational Wave Background
• Exploring millicharged dark matter components from the shadows
• Linear analysis of the gravitational beam-plasma instability
• Dark Matter reconstruction from stellar orbits in the Galactic Centre
• 3D Kinematics of Stellar SiO Masers in the Galactic Center
• Axion-Photon Conversion in Neutron Star Magnetospheres: The Role of the Plasma in the Goldreich-Julian Model
• WIMP constraints from black hole low-mass X-ray binaries
• The Dark Matter Diffused Supernova Neutrino Background
• Extended mass and spheroidal deformation effects on epicyclic frequencies and periapsis shift in quasi-circular orbits
• Noble gravitational atoms: Self-gravitating black hole scalar wigs with angular momentum number
• Neutrino production in the central dark-matter spikes of active galaxies
• The potential of diffuse Galactic Ridge neutrino measurements to constrain dark matter
• Detectability of compact intermediate-mass black hole binaries as low-frequency gravitational wave sources: the influence of dynamical friction of dark matter
• Fermionic Dark Matter spikes: origin and growth of Black Hole seeds