Constraints on a Non-thermal History from Galactic Dark Matter Spikes
arXiv:1102.2897 · doi:10.1103/PhysRevD.84.023507
Abstract
In this paper we examine whether indirect detection constraints on dark matter associated with a non-thermal history may be significantly improved when accounting for the presence of galactic substructure in the form of dark matter spikes. We find that significant constraints may be derived from the non-observation of an excess of diffuse gamma-rays and from the properties of bright gamma-ray point sources observed by the Fermi Gamma-Ray Space Telescope, but these constraints depend sensitively on the details of the formation of the first stars and their subsequent black hole remnants. However, we also find that, especially if WIMPs annihilate primarily to quarks or gauge bosons, it is possible to extract meaningful and conservative bounds on the annihilation cross section.
8 pages, 3 figures
References in corpus (48)
- PYTHIA 6.4 Physics and Manual
- PYTHIA 6.2 Physics and Manual
- Particle Dark Matter: Evidence, Candidates and Constraints
- Observation of an anomalous positron abundance in the cosmic radiation
- The James Webb Space Telescope
- A Theory of Dark Matter
- Fermi Large Area Telescope First Source Catalog
- Clumps and streams in the local dark matter distribution
- Dark matter annihilation at the galactic center
- Wino Cold Dark Matter from Anomaly-Mediated SUSY Breaking
- The Spectrum of the Isotropic Diffuse Gamma-Ray Emission Derived From First-Year Fermi Large Area Telescope Data
- A Dark-Matter Spike at the Galactic Center?
- Leptophilic Dark Matter
- Dark matter and the first stars: a new phase of stellar evolution
- Multi-Component Dark Matter
- Non-thermal Dark Matter and the Moduli Problem in String Frameworks
- Gamma-Ray Constraint on Galactic Positron Production by MeV Dark Matter
- Dark Matter Spikes and Annihilation Radiation from the Galactic Center
- Constraints on Cosmological Dark Matter Annihilation from the Fermi-LAT Isotropic Diffuse Gamma-Ray Measurement
- PAMELA Positron Excess as a Signal from the Hidden Sector
- Time-Dependent Models for Dark Matter at the Galactic Center
- A New Signature of Dark Matter Annihilations: Gamma-Rays from Intermediate-Mass Black Holes
- A Non-thermal WIMP Miracle
- The Formation Rates of Population III Stars and Chemical Enrichment of Halos during the Reionization Era
- The Case for a 700+ GeV WIMP: Cosmic Ray Spectra from PAMELA, Fermi and ATIC
- Dark Matter Dynamics and Indirect Detection
- An Effective Theory of Dirac Dark Matter
- PAMELA Satellite Data as a Signal of Non-Thermal Wino LSP Dark Matter
- The PAMELA Positron Excess from Annihilations into a Light Boson
- Cosmic rays from Leptonic Dark Matter
- Multicomponent Dark Matter in Supersymmetric Hidden Sector Extensions
- Mini-dark halos with intermediate mass black holes
- Is the PAMELA Positron Excess Winos?
- Supermassive Dark Stars: Detectable in JWST
- Mirage in the Sky: Non-thermal Dark Matter, Gravitino Problem, and Cosmic Ray Anomalies
- The PAMELA and ATIC Signals From Kaluza-Klein Dark Matter
- Finding high-redshift dark stars with the James Webb Space Telescope
- Extended MSSM Neutralinos as the Source of the PAMELA Positron Excess
- Dark Matter as a Guide Toward a Light Gluino at the LHC
- Dark Matter Annihilation around Intermediate Mass Black Holes: an update
- Dark Matter and LHC: What is the Connection?
- Slightly Non-Minimal Dark Matter in PAMELA and ATIC
- Observational constraints on supermassive dark stars
- Direct/indirect detection signatures of nonthermally produced dark matter
- Black Holes in our Galactic Halo: Compatibility with FGST and PAMELA Data and Constraints on the First Stars
- Antiprotons from Dark Matter: Effects of a Position-Dependent Diffusion Coefficient
- Overcoming Gamma Ray Constraints with Annihilating Dark Matter in Milky Way Subhalos
- Dark Stars and Boosted Dark Matter Annihilation Rates
Cited by in corpus (7)
- Improved constraints on the primordial power spectrum at small scales from ultracompact minihalos
- Cosmological Moduli and the Post-Inflationary Universe: A Critical Review
- Hidden On-Shell Mediators for the Galactic Center Gamma-Ray Excess
- Supersymmetry, Nonthermal Dark Matter and Precision Cosmology
- Complementarity of Indirect and Accelerator Dark Matter Searches
- Black Holes, Dark Matter Spikes, and Constraints on Simplified Models with -Channel Mediators
- Gamma-Ray Constraints on the First Stars from Annihilation of Light WIMPs