Pre-launch estimates for GLAST sensitivity to Dark Matter annihilation signals

Abstract

We investigate the sensitivity of the Gamma-ray Large Area Space Telescope (GLAST) to indirectly detect weakly interacting massive particles (WIMPs) through the $\gamma$-ray signal that their pair annihilation produces. WIMPs are among the favorite candidates to explain the compelling evidence that about 80% of the mass in the Universe is non-baryonic dark matter (DM). They are serendipitously motivated by various extensions of the standard model of particle physics such as Supersymmetry and Universal Extra Dimensions (UED). With its unprecedented sensitivity and its very large energy range (20 MeV to more than 300 GeV) the main instrument on board the GLAST satellite, the Large Area Telescope (LAT), will open a new window of discovery. As our estimates show, the LAT will be able to detect an indirect DM signature for a large class of WIMP models given a cuspy profile for the DM distribution. Using the current state of the art Monte Carlo and event reconstruction software developed within the LAT collaboration, we present preliminary sensitivity studies for several possible sources inside and outside the Galaxy. We also discuss the potential of the LAT to detect UED via the electron/positron channel. Diffuse background modeling and other background issues that will be important in setting limits or seeing a signal are presented.

49 pages, 29 figures, JCAP in press

References in corpus (68)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Measurements of Omega and Lambda from 42 High-Redshift Supernovae
• The Structure of Cold Dark Matter Halos
• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• Particle Dark Matter: Evidence, Candidates and Constraints
• Supersymmetric Dark Matter
• Big-Bang nucleosynthesis (Particle Data Group mini-review)
• The Cosmological Parameters 2006
• Profiles of dark haloes: evolution, scatter, and environment
• Cosmological Constraints from the SDSS Luminous Red Galaxies
• Cold collapse and the core catastrophe
• Bounds on Universal Extra Dimensions
• Cosmic-ray propagation and interactions in the Galaxy
• Propagation of cosmic-ray nucleons in the Galaxy
• Non-Baryonic Dark Matter - Observational Evidence and Detection Methods
• DarkSUSY: Computing Supersymmetric Dark Matter Properties Numerically
• EGRET Observations of the Extragalactic Gamma Ray Emission
• Diffuse continuum gamma rays from the Galaxy
• Formation and evolution of galaxy dark matter halos and their substructure
• Observability of Gamma Rays from Dark Matter Neutralino Annihilations in the Milky Way Halo
• Diffuse Galactic continuum gamma rays. A model compatible with EGRET data and cosmic-ray measurements
• The Power Spectrum Dependence of Dark Matter Halo Concentrations
• Secondary antiprotons and propagation of cosmic rays in the Galaxy and heliosphere
• Dark matter substructure and gamma-ray annihilation in the Milky Way halo
• Earth-mass dark-matter haloes as the first structures in the early Universe
• The Structural Evolution of Substructure
• Very high energy gamma rays from the direction of Sagittarius A*
• Dark Matter and Collider Phenomenology of Universal Extra Dimensions
• The Kinematics, Orbit, and Survival of the Sagittarius Dwarf Spheroidal Galaxy
• Microwave ISM Emission Observed by WMAP
• Cosmological dark matter annihilations into gamma-rays - a closer look
• A new determination of the extragalactic diffuse gamma-ray background from EGRET data
• Strong and weak lensing united III: Measuring the mass distribution of the merging galaxy cluster 1E0657-56
• Precision Measurement of Cosmic-Ray Antiproton Spectrum
• Significant Gamma Lines from Inert Higgs Dark Matter
• What mass are the smallest protohalos?
• Neutrino masses and the number of neutrino species from WMAP and 2dFGRS
• A "Baedecker" for the Dark Matter Annihilation Signal
• Dark matter annihilation in the halo of the Milky Way
• Gamma Rays from Kaluza-Klein Dark Matter
• Cosmological parameters from CMB measurements and the final 2dFGRS power spectrum
• Detection of Sub-TeV Gamma-Rays from the Galactic Center Direction by CANGAROO-II
• TeV Gamma-Ray Observations of the Galactic Center
• A New Signature of Dark Matter Annihilations: Gamma-Rays from Intermediate-Mass Black Holes
• Observation of Gamma Rays from the Galactic Center with the MAGIC Telescope
• The Clumpiness of Cold Dark Matter: Implications for the Annihilation Signal
• The Galactic Center as a Dark Matter Gamma-Ray Source
• TeV gamma-rays and the largest masses and annihilation cross sections of neutralino dark matter
• Challenging cosmic ray propagation with antiprotons. Evidence for a "fresh" nuclei component?
• Anisotropic inverse Compton scattering in the Galaxy
• Theoretical uncertainties in sparticle mass predictions from computational tools
• First Clear Signature of an Extended Dark Matter Halo in the Draco Dwarf Spheroidal
• Comparison of SUSY spectrum calculations and impact on the relic density constraints from WMAP
• Supersymmetric Dark Matter and the Extragalactic Gamma Ray Background
• Gamma-rays from halos around stars and the Sun
• The Anti-Coincidence Detector for the GLAST Large Area Telescope
• The Evolution of Substructure in Galaxy, Group and Cluster Haloes II: Global Properties
• Limits on Supersymmetric Dark Matter From EGRET Observations of the Galactic Center Region
• Probing Galaxy Formation with High Energy Gamma-Rays
• Source population synthesis and the Galactic diffuse gamma-ray emission
• The Evolution of Substructure in Galaxy, Group and Cluster Haloes III: Comparison with Simulations
• Kaluza-Klein Dark Matter, Electrons and Gamma Ray Telescopes
• Evidence for Dark Matter Annihilation from Galactic Gamma Rays?
• Inverse Compton scattering on solar photons, heliospheric modulation, and neutrino astrophysics
• Understanding limitations in the determination of the diffuse Galactic gamma-ray emission
• Diffuse gamma-ray emission: lessons and perspectives
• Extended solar emission - an analysis of the EGRET data
• Digging for the Truth: Photon Archeology with GLAST

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• The Aquarius Project: the subhalos of galactic halos
• A Theory of Dark Matter
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• Detection of a Gamma-Ray Source in the Galactic Center Consistent with Extended Emission from Dark Matter Annihilation and Concentrated Astrophysical Emission
• Dark Matter and Pulsar Model Constraints from Galactic Center Fermi-LAT Gamma Ray Observations
• A Tentative Gamma-Ray Line from Dark Matter Annihilation at the Fermi Large Area Telescope
• Fermi LAT Search for Internal Bremsstrahlung Signatures from Dark Matter Annihilation
• Non-Abelian Dark Sectors and Their Collider Signatures
• Observations of Milky Way Dwarf Spheroidal galaxies with the Fermi-LAT detector and constraints on Dark Matter models
• New Positron Spectral Features from Supersymmetric Dark Matter - a Way to Explain the PAMELA Data?
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• Particle Models and the Small-Scale Structure of Dark Matter
• Gamma-ray and radio tests of the e+e- excess from DM annihilations
• Scalar Multiplet Dark Matter
• Diffuse gamma ray constraints on annihilating or decaying Dark Matter after Fermi
• Search for Gamma-Ray Emission from DES Dwarf Spheroidal Galaxy Candidates with Fermi-LAT Data
• Constraints on Cosmological Dark Matter Annihilation from the Fermi-LAT Isotropic Diffuse Gamma-Ray Measurement
• Dark Matter Evidence, Particle Physics Candidates and Detection Methods
• Deducing the nature of dark matter from direct and indirect detection experiments in the absence of collider signatures of new physics
• Stellar Kinematics and Metallicities in the Ultra-Faint Dwarf Galaxy Reticulum II
• Physics at the e+ e- Linear Collider
• Search for Dark Matter Satellites using the FERMI-LAT
• Farthest Neighbor: The Distant Milky Way Satellite Eridanus II
• The Case for a 700+ GeV WIMP: Cosmic Ray Spectra from PAMELA, Fermi and ATIC
• Fitting the Gamma-Ray Spectrum from Dark Matter with DMFIT: GLAST and the Galactic Center Region
• Dark Matter Searches with Astroparticle Data
• High Energy Positrons From Annihilating Dark Matter
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• The nature of the Diffuse Gamma-Ray Background
• (In)visible Z' and dark matter
• Bounds on Cross-sections and Lifetimes for Dark Matter Annihilation and Decay into Charged Leptons from Gamma-ray Observations of Dwarf Galaxies
• Reconciliation of CDM abundance and $\mu \to e\gamma$ in a radiative seesaw model
• Searches for Dark Matter annihilation signatures in the Segue 1 satellite galaxy with the MAGIC-I telescope
• Space- and Ground-Based Gamma-Ray Astrophysics
• High-Energy Neutrinos From Dark Matter Particle Self-Capture Within the Sun
• Probing Dark Matter Decay and Annihilation with Fermi LAT Observations of Nearby Galaxy Clusters
• Constraints on Decaying Dark Matter from Fermi Observations of Nearby Galaxies and Clusters
• A Deeper Look at the New Milky Way Satellites: Sagittarius II, Reticulum II, Phoenix II, and Tucana III
• Gamma rays from the annihilation of singlet scalar dark matter
• Indirect Searches for Dark Matter: a status review
• Cosmic Signals from the Hidden Sector
• The Pulsar Contribution to the Gamma-Ray Background
• Fermionic dark matter with pseudo-scalar Yukawa interaction
• A Profile Likelihood Analysis of the Constrained MSSM with Genetic Algorithms
• On the role of electroweak bremsstrahlung for indirect dark matter signatures
• Direct Constraints on Minimal Supersymmetry from Fermi-LAT Observations of the Dwarf Galaxy Segue 1
• Is the PAMELA Positron Excess Winos?
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• Indirect Detection Analysis: Wino Dark Matter Case Study
• Dark matter and pulsar signals for Fermi LAT, PAMELA, ATIC, HESS and WMAP data
• Dark Matter Sees The Light
• Gamma Rays from Clusters and Groups of Galaxies: Cosmic Rays versus Dark Matter
• Strong constraints on decay and annihilation of dark matter from heating of gas-rich dwarf galaxies
• Early Annihilation and Diffuse Backgrounds in 1/v WIMP models
• Gamma-ray background anisotropy from galactic dark matter substructure
• The Extragalactic Gamma-ray Sky in the Fermi era
• Investigating Gamma-Ray Lines from Dark Matter with Future Observatories
• The WIMP Forest: Indirect Detection of a Chiral Square
• An Off-center Density Peak in the Milky Way's Dark Matter Halo?
• Gas-rich dwarf galaxies as a new probe of dark matter interactions with ordinary matter
• Positron/Gamma-Ray Signatures of Dark Matter Annihilation and Big-Bang Nucleosynthesis
• Ships Passing in the Night: Spectroscopic Analysis of Two Ultra-Faint Satellites in the Constellation Carina
• The Gamma-Ray-Flux Probability Distribution Function from Galactic Halo Substructure
• Complementarity of direct dark matter detection and indirect detection through gamma-rays
• A clear Dark Matter gamma ray line generated by the Green-Schwarz mechanism
• WIMP searches with gamma rays in the Fermi era: challenges, methods and results
• The Contribution of Blazars to the Extragalactic Diffuse Gamma-ray Background and Their Future Spatial Resolution
• Conservative Constraints on Dark Matter from the Fermi-LAT Isotropic Diffuse Gamma-Ray Background Spectrum
• Detecting Gamma-Ray Anisotropies from Decaying Dark Matter: Prospects for Fermi LAT
• Substructure Boosts to Dark Matter Annihilation from Sommerfeld Enhancement
• Dark matter subhaloes as gamma-ray sources and candidates in the first Fermi-LAT catalogue
• Models of the Contribution of Blazars to the Anisotropy of the Extragalactic Diffuse Gamma-ray Background
• Current and Future Constraints on Dark Matter from Prompt and Inverse-Compton Photon Emission in the Isotropic Diffuse Gamma-ray Background
• Fermi Gamma-ray Space Telescope: High-Energy Results from the First Year
• The Contribution Of Inverse Compton Scattering To The Diffuse Extragalactic Gamma-Ray Background From Annihilating Dark Matter
• Annihilation vs. Decay: Constraining dark matter properties from a gamma-ray detection
• Gamma-ray Constraints on Dark Matter Annihilation into Charged Particles
• The Mystery of the Cosmic Diffuse Ultraviolet Background Radiation
• Dark Matter Annihilation around Intermediate Mass Black Holes: an update
• The $\text{Fermi}$-LAT gamma-ray excess at the Galactic Center in the singlet-doublet fermion dark matter model
• The Smith Cloud and its dark matter halo: Survival of a Galactic disc passage
• Identifying Dark Matter Annihilation Products In The Diffuse Gamma Ray Background
• The 130 GeV Fingerprint of Right-Handed Neutrino Dark Matter
• Is The Gamma-Ray Source 3FGL J2212.5+0703 A Dark Matter Subhalo?
• Constraining the Sommerfeld enhancement with Cherenkov telescope observations of dwarf galaxies
• Could the Fermi-LAT detect gamma-rays from dark matter annihilation in the dwarf galaxies of the Local Group?
• Intermediate Mass Black Holes and Nearby Dark Matter Point Sources: A Critical Reassessment
• Gamma Rays From Dark Matter Subhalos Revisited: Refining the Predictions and Constraints
• Transient Pulses from Exploding Primordial Black Holes as a Signature of an Extra Dimension
• Constraining Dark Matter in Galactic Substructure
• Anisotropies in the Diffuse Gamma-Ray Background from Dark Matter with Fermi LAT: a closer look
• Complementarity of Indirect and Accelerator Dark Matter Searches
• The detectability of dark matter annihilation with Fermi using the anisotropy energy spectrum of the gamma-ray background
• The Morphology of the Galactic Dark Matter Synchrotron Emission with Self-Consistent Cosmic Ray Diffusion Models
• Entering the Era of Dark Matter Astronomy? Near to Long-Term Forecasts in X-Ray and Gamma-Ray Bands
• Diffuse Galactic Gamma Rays at intermediate and high latitudes. I. Constraints on the ISM properties
• Diffuse gamma-ray background and cosmic-ray positrons from annihilating dark matter
• The Abundance of New Kind of Dark Matter Structures
• Galactic-Centre Gamma Rays in CMSSM Dark Matter Scenarios
• GAMMA-LIGHT: High-Energy Astrophysics above 10 MeV
• Spectroscopic analysis of Milky Way outer halo satellites: Aquarius II and Bootes II
• Mass Varying Neutrinos, Quintessence, and the Accelerating Expansion of the Universe
• Evaluating the Gamma-Ray Evidence for Self-Annihilating Dark Matter from the Virgo Cluster
• Searching for Dark Matter Annihilation in the Smith High-Velocity Cloud
• Constraining Dark Matter Properties with Gamma-Rays from the Galactic Center with Fermi-LAT
• A Merger Tree with Microsolar Mass Resolution: Application to $\gamma$-ray Emission from Subhalo Population
• Environmentally Selected WIMP Dark Matter with High-Scale Supersymmetry Breaking
• Gamma rays from Dark Matter Annihilation in the Central Region of the Galaxy
• Exploring SUSY light Higgs boson scenarios via dark matter experiments
• Systematic Effects in Extracting a "Gamma-Ray Haze" from Spatial Templates
• Extragalactic and galactic gamma-rays and neutrinos from annihilating dark matter
• Limits on Threshold and "Sommerfeld" Enhancements in Dark Matter Annihilation
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• A Gaia DR2 search for dwarf galaxies towards Fermi-LAT sources: implications for annihilating dark matter
• Analysis of Fermi-LAT data from Tucana-II: Possible constraints on the Dark Matter models with an intriguing hint of a signal
• Multiwavelength analysis of low surface brightness galaxies to study possible dark matter signature
• Gamma ray lines: what will they tell us about SUSY?
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• Indirect searches for dark matter with the Fermi LAT instrument
• A New Approach to Searching for Dark Matter Signals in Fermi-LAT Gamma Rays
• On the Energy Distribution of the Galactic Center Excess' Sources
• A new probe of dark matter-baryon interactions in compact stellar systems
• Testing astroparticle physics with the Fermi Large Area Telescope
• Search for Dark Matter Annihilation and Decay with H$\alpha$ Line Emission
• 130GeV gamma-ray line through axion conversion
• Perspective of Galactic dark matter subhalo detection on Fermi from the EGRET observation