New mass bound on fermionic dark matter from a combined analysis of classical dSphs

Abstract

Dwarf spheroidal galaxies (dSphs) are the most compact dark matter-dominated objects observed so far. The Pauli exclusion principle limits the number of fermionic dark matter particles that can compose a dSph halo. This results in a well-known lower bound on their particle mass. So far, such bounds were obtained from the analysis of individual dSphs. In this paper, we model dark matter halo density profiles via the semi-analytical approach and analyse the data from eight `classical' dSphs assuming the same mass of dark matter fermion in each object. First, we find out that modelling of Carina dSph results in a much worse fitting quality compared to the other seven objects. From the combined analysis of the kinematic data of the remaining seven `classical' dSphs, we obtain a new $2\sigma$ lower bound of $m\gtrsim 190$ eV on the dark matter fermion mass. In addition, by combining a sub-sample of four dSphs -- Draco, Fornax, Leo I and Sculptor -- we conclude that 220 eV fermionic dark matter appears to be preferred over the standard CDM at about 2$\sigma$ level. However, this result becomes insignificant if all seven objects are included in the analysis. Future improvement of the obtained bound requires more detailed data, both from `classical' and ultra-faint dSphs.

arXiv comment10 pages, 7 figures

References in corpus (66)

• A Universal Density Profile from Hierarchical Clustering
• The Structure of Cold Dark Matter Halos
• The observed properties of dwarf galaxies in and around the Local Group
• Cold and Fuzzy Dark Matter
• Ultralight scalars as cosmological dark matter
• Small-Scale Challenges to the $\Lambda$CDM Paradigm
• The Structure of Dark Matter Haloes in Dwarf Galaxies
• Halo Formation in Warm Dark Matter Models
• The Waning of the WIMP? A Review of Models, Searches, and Constraints
• How supernova feedback turns dark matter cusps into cores
• Accurate masses for dispersion-supported galaxies
• A Method for Measuring (Slopes of) the Mass Profiles of Dwarf Spheroidal Galaxies
• The Cores of Dwarf Galaxy Halos
• WIMP dark matter candidates and searches - current status and future prospects
• Superheavy dark matter
• Cusp-core transformations in dwarf galaxies: observational predictions
• Forged in FIRE: cusps, cores, and baryons in low-mass dwarf galaxies
• The Impact of Baryonic Physics on the Structure of Dark Matter Halos: the View from the FIRE Cosmological Simulations
• Baryons Matter: Why Luminous Satellite Galaxies Have Reduced Central Masses
• The kinematic status and mass content of the Sculptor dwarf spheroidal galaxy
• The central slope of dark matter cores in dwarf galaxies: Simulations vs. THINGS
• A lower bound on the mass of Dark Matter particles
• Gaia DR2 Proper Motions of Dwarf Galaxies within 420 kpc: Orbits, Milky Way Mass, Tidal Influences, Planar Alignments, and Group Infall
• Sterile neutrino dark matter bounds from galaxies of the Local Group
• Flat-Cored Dark Matter in Cuspy Clusters of Galaxies
• Halo Cores and Phase Space Densities: Observational Constraints on Dark Matter Physics and Structure Formation
• Erasing Dark Matter Cusps in Cosmological Galactic Halos with Baryons
• Exploring Halo Substructure with Giant Stars XI: The Tidal Tails of the Carina Dwarf Spheroidal and the Discovery of Magellanic Cloud Stars in the Carina Foreground
• Dark matter annihilation and decay in dwarf spheroidal galaxies: The classical and ultrafaint dSphs
• Gaia Proper Motions and Orbits of the Ultra-Faint Milky Way Satellites
• An extensive study of dynamical friction in dwarf galaxies: the role of stars, dark matter, halo profiles and MOND
• Modeling The Structure And Dynamics of Dwarf Spheroidal Galaxies with Dark Matter And Tides
• A Virial Core in the Sculptor Dwarf Spheroidal Galaxy
• On the core-halo distribution of dark matter in galaxies
• Internal kinematics and dynamical models of dwarf spheroidal galaxies around the Milky Way
• The core size of the Fornax dwarf Spheroidal
• The inner structure of haloes in Cold+Warm dark matter models
• Constraining sterile neutrino dark matter by phase-space density observations
• The phase space density of fermionic dark matter haloes
• The core-cusp problem: a matter of perspective
• Observational rotation curves and density profiles vs. the Thomas-Fermi galaxy structure theory
• On the dark matter profile in Sculptor: Breaking the $\beta$ degeneracy with Virial shape parameters
• Dark Matter in Dwarf Spheroidal Galaxies and Indirect Detection: A Review
• Brief History of Ultra-light Scalar Dark Matter Models
• Models of dark matter halos based on statistical mechanics: II. The fermionic King model
• 3D motions in the Sculptor dwarf galaxy as a glimpse of a new era
• Knowing the unknowns: uncertainties in simple estimators of galactic dynamical masses
• Gravitational Phase Transition of Heavy Neutrino Matter
• Dwarf spheroidal galaxies as degenerate gas of free fermions
• Phase space mass bound for fermionic dark matter from dwarf spheroidal galaxies
• The extensive age gradient of the Carina dwarf galaxy
• Novel constraints on fermionic dark matter from galactic observables I: The Milky Way
• The Cusp/Core problem: supernovae feedback versus the baryonic clumps and dynamical friction model
• Sailing under the Magellanic Clouds: A DECam View of the Carina Dwarf
• Cores in Dwarf Galaxies from Fermi Repulsion
• The Carina Project. X. On the kinematics of old and intermediate-age stellar populations
• Can we measure the slopes of density profiles in dwarf spheroidal galaxies?
• Schwarzschild dynamical model of the Fornax dwarf spheroidal galaxy
• Dark halo structure in the Carina dwarf spheroidal galaxy: joint analysis of multiple stellar components
• A lower limit on the dark particle mass from dSphs
• The Dark Matter distribution function and Halo Thermalization from the Eddington equation in Galaxies
• Profile of a Galactic Spherical Cloud of Self-Gravitating Fermions
• Self-gravitating Newtonian models of fermions with anisotropy and cutoff energy in their distribution function
• Constraining ultra light fermionic dark matter with Milky-Way observations
• Bounds on Resonantly-Produced Sterile Neutrinos from Phase Space Densities of Milky Way Dwarf Galaxies
• New model of density distribution for fermionic dark matter halos

Cited by in corpus (28)

• The NANOGrav 15-year Data Set: Search for Signals from New Physics
• Lower Mass Bounds on FIMP Dark Matter Produced via Freeze-In
• Absorption of Fermionic Dark Matter by Nuclear Targets
• New Constraints on the Mass of Fermionic Dark Matter from Dwarf Spheroidal Galaxies
• XENON1T Anomaly and its Implication for Decaying Warm Dark Matter
• Absorption of Sub-MeV Fermionic Dark Matter by Electron Targets
• Ultralight Fermionic Dark Matter
• Bounds on boosted dark matter from direct detection: The role of energy-dependent cross sections
• eXTP perspectives for the $\nu$MSM sterile neutrino dark matter model
• THESEUS Insights into ALP, Dark Photon and Sterile Neutrino Dark Matter
• Assessing the Fornax globular cluster timing problem in different models of dark matter
• Degenerate Sub-keV Fermion Dark Matter from a Solution to the Hubble Tension
• Dark matter profiles of SPARC galaxies: a challenge to fuzzy dark matter
• Strongly-Interacting Ultralight Millicharged Particles
• Experimental targets for dark photon dark matter
• Theoretical bounds on dark matter masses
• Probing self-interacting sterile neutrino dark matter with the diffuse supernova neutrino background
• Degenerate Fermion Dark Matter from a Broken $U(1{)}_{\mathrm{B}-\mathrm{L}}$ Gauge Symmetry
• Dark matter produced from neutrinos
• Supermassive black hole seeds from sub-keV dark matter
• Anomaly-free axion dark matter in three Higgs doublet model and its phenomenological implications
• Axion-Sterile-Neutrino Dark Matter
• New Constraints on Decaying Dark Matter from INTEGRAL/SPI
• On the Tremaine-Gunn Limit with Mass-Varying Particles
• A $d=3$ dimensional model with two $U(1)$ gauge fields coupled via matter fields and BF interaction
• Implications of Quantum Gravity for Dark Matter
• Constraining Fundamental Constant Variations from Ultralight Dark Matter with Pulsar Timing Arrays
• Confusing dark matter particle properties with modifications to General Relativity