Constraint on dark matter annihilation with dark star formation using Fermi extragalactic diffuse gamma-ray background data

Abstract

It has been proposed that during the formation of the first generation stars there might be a "dark star" phase in which the power of the star comes from dark matter annihilation. The adiabatic contraction process to form the dark star would result in a highly concentrated density profile of the host halo at the same time, which may give enhanced indirect detection signals of dark matter. In this work we investigate the extragalactic $\gamma$-ray background from dark matter annihilation with such a dark star formation scenario, and employ the isotropic $\gamma$-ray data from Fermi-LAT to constrain the model parameters of dark matter. The results suffer from large uncertainties of both the formation rate of the first generation stars and the subsequent evolution effects of the host halos of the dark stars. We find, in the most optimistic case for $\gamma$-ray production via dark matter annihilation, the expected extragalactic $\gamma$-ray flux will be enhanced by 1-2 orders of magnitude. In such a case, the annihilation cross section of the supersymmetric dark matter can be constrained to the thermal production level, and the leptonic dark matter model which is proposed to explain the positron/electron excesses can be well excluded. Conversely, if the positron/electron excesses are of a dark matter annihilation origin, then the early Universe environment is such that no dark star can form.

19 pages, 6 figures. References added, published in JCAP

References in corpus (74)

• A Universal Density Profile from Hierarchical Clustering
• PYTHIA 6.4 Physics and Manual
• PYTHIA 6.2 Physics and Manual
• Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Large scale bias and the peak background split
• Profiles of dark haloes: evolution, scatter, and environment
• Observation of an anomalous positron abundance in the cosmic radiation
• On the normalisation of the cosmic star formation history
• A Theory of Dark Matter
• The Nucleosynthetic Signature of Population III
• Three Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Polarization Analysis
• Cold collapse and the core catastrophe
• The Inner Structure of LambdaCDM Halos III: Universality and Asymptotic Slopes
• Halos and galaxies in the standard cosmological model: results from the Bolshoi simulation
• Measurement of the Cosmic Ray e+ plus e- spectrum from 20 GeV to 1 TeV with the Fermi Large Area Telescope
• DarkSUSY: Computing Supersymmetric Dark Matter Properties Numerically
• On the properties of massive Population III stars and metal-free stellar populations
• The Diversity and Similarity of Simulated Cold Dark Matter Halos
• EGRET Observations of the Extragalactic Gamma Ray Emission
• Concentration, Spin and Shape of Dark Matter Haloes as a Function of the Cosmological Model: WMAP1, WMAP3 and WMAP5 results
• The energy spectrum of cosmic-ray electrons at TeV energies
• Simulations of Early Structure Formation: Primordial Gas Clouds
• The transition from Population III to normal galaxies: Ly-a and HeII 1640 emission and the ionising properties of high redshift starburst galaxies
• A new measurement of the antiproton-to-proton flux ratio up to 100 GeV in the cosmic radiation
• Model-independent implications of the e+, e-, anti-proton cosmic ray spectra on properties of Dark Matter
• The Spectrum of the Isotropic Diffuse Gamma-Ray Emission Derived From First-Year Fermi Large Area Telescope Data
• Probing the ATIC peak in the cosmic-ray electron spectrum with H.E.S.S
• Accurate universal models for the mass accretion histories and concentrations of dark matter halos
• Density Profiles of Dark Matter Halo are not Universal
• Particle decays during the cosmic dark ages
• Atomic data for astrophysics. I. Radiative recombination rates for H-like, He-like, Li-like and Na-like ions over a broad range of temperature
• The Formation of Population III Binaries from Cosmological Initial Conditions
• Intergalactic Photon Spectra from the Far IR to the UV Lyman Limit for $0<z<6$ and the Optical Depth of the Universe to High Energy Gamma-Rays
• Cosmological dark matter annihilations into gamma-rays - a closer look
• New Positron Spectral Features from Supersymmetric Dark Matter - a Way to Explain the PAMELA Data?
• Dark matter and the first stars: a new phase of stellar evolution
• Dark Matter Interpretations of the Electron/Positron Excesses after FERMI
• Simulating Cosmic Reionization at Large Scales II: the 21-cm Emission Features and Statistical Signals
• PAMELA data and leptonically decaying dark matter
• The transition from population III to population II-I star formation
• Constraints on Cosmological Dark Matter Annihilation from the Fermi-LAT Isotropic Diffuse Gamma-Ray Measurement
• Two populations of metal-free stars in the early Universe
• Empirical Models for Dark Matter Halos. II. Inner profile slopes, dynamical profiles, and rho/sigma^3
• The Formation Rates of Population III Stars and Chemical Enrichment of Halos during the Reionization Era
• Dark matter interpretation of recent electron and positron data
• The Case for a 700+ GeV WIMP: Cosmic Ray Spectra from PAMELA, Fermi and ATIC
• Axion cold dark matter in non-standard cosmologies
• The Robustness of Dark Matter Density Profiles in Dissipationless Mergers
• $e^{\pm }$ Excesses in the Cosmic Ray Spectrum and Possible Interpretations
• Stellar Structure of Dark Stars: a first phase of Stellar Evolution due to Dark Matter Annihilation
• Dark Matter capture and annihilation on the First Stars: preliminary estimates
• Constraints on leptonically annihilating Dark Matter from reionization and extragalactic gamma background
• Dark Matter Densities during the Formation of the First Stars and in Dark Stars
• Dark matter annihilation effects on the first stars
• Major Mergers of Galaxy Haloes: Cuspy or Cored Inner Density Profile?
• Dark Matter annihilations in Pop III stars
• Supermassive Dark Stars: Detectable in JWST
• Dark Matter Annihilation and Primordial Star Formation
• Extragalactic Inverse Compton Light from Dark Matter Annihilation and the Pamela Positron Excess
• The 21cm Signature of the First Stars
• Dark Matter Capture in the First Stars: a Power Source and Limit on Stellar Mass
• Dark Stars: a new look at the First Stars in the Universe
• Extragalactic gamma-ray background radiation from dark matter annihilation
• First star formation with dark matter annihilation
• Finding high-redshift dark stars with the James Webb Space Telescope
• Leptonic dark matter annihilation in the evolving universe: constraints and implications
• Dark stars: Implications and constraints from cosmic reionization and extragalactic background radiation
• Cold Dark Matter in non-Standard Cosmologies, PAMELA, ATIC and Fermi LAT
• The WIMP capture process for dark stars in the early universe
• Diffuse gamma-ray background and cosmic-ray positrons from annihilating dark matter
• Black Holes in our Galactic Halo: Compatibility with FGST and PAMELA Data and Constraints on the First Stars
• Decaying Dark Matter in Supersymmetric Model and Cosmic-Ray Observations
• Pamela, FGST and Sub-Tev Dark Matter

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