Gravitational Nanolensing from Subsolar Mass Dark Matter Halos

Abstract

We investigate the feasibility of extracting the gravitational nanolensing signal due to the presence of subsolar mass halos within galaxy-sized dark matter halos. We show that subsolar mass halos in a lensing galaxy can cause strong nanolensing events with shorter durations and smaller amplitudes than microlensing events caused by stars. We develop techniques that can be used in future surveys such as Pan-STARRS, LSST and OMEGA to search for the nanolensing signal from subsolar mass halos.

12 pages, 10 figures. Replaced with version accepted for publication in ApJ. Very minor changes from version 1

References in corpus (75)

• The Sloan Digital Sky Survey: Technical Summary
• A Universal Density Profile from Hierarchical Clustering
• The Seventh Data Release of the Sloan Digital Sky Survey
• Particle Dark Matter: Evidence, Candidates and Constraints
• Supersymmetric Dark Matter
• The 2.5 m Telescope of the Sloan Digital Sky Survey
• The Sloan Digital Sky Survey Photometric Camera
• A photometricity and extinction monitor at the Apache Point Observatory
• Direct Detection of CDM Substructure
• The Sloan Lens ACS Survey. III - The Structure and Formation of Early-type Galaxies and their Evolution since z~1
• Evidence for substructure in lens galaxies?
• A common mass scale for satellite galaxies of the Milky Way
• 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
• Gravitationally lensed quasars and supernovae in future wide-field optical imaging surveys
• Compound gravitational lensing as a probe of dark matter substructure within galaxy halos
• The Quasar Accretion Disk Size - Black Hole Mass Relation
• The Quasar Accretion Disk Size -- Black Hole Mass Relation
• The first WIMPy halos
• Quantitative Interpretation of Quasar Microlensing Light Curves
• Damping scales of neutralino cold dark matter
• Long-term optical variability properties of the Palomar-Green quasars
• Quasar Microlensing at High Magnification and the Role of Dark Matter: Enhanced Fluctuations and Suppressed Saddlepoints
• The Small-Scale Power Spectrum of Cold Dark Matter
• The power spectrum of SUSY-CDM on sub-galactic scales
• The Sizes of the X-ray and Optical Emission Regions of RXJ1131-1231
• What mass are the smallest protohalos?
• Phase-space structure in the local dark matter distribution and its signature in direct detection experiments
• Tests for Substructure in Gravitational Lenses
• Probing Dark Matter Substructure in Lens Galaxies
• Small-scale clumps in the galactic halo and dark matter annihilation
• Flux ratios as a probe of dark substructures in quadruple-image gravitational lenses
• Dark matter annihilation in the halo of the Milky Way
• Precise constraints on the dark matter content of Milky Way dwarf galaxies for gamma-ray experiments
• Clumpy Neutralino Dark Matter
• The Dark Matter Annihilation Signal from Galactic Substructure: Predictions for GLAST
• Size is Everything: Universal Features of Quasar Microlensing with Extended Sources
• Dark matter substructure and dwarf galactic satellites
• Selecting Quasars by their Intrinsic Variability
• Probing interaction and spatial curvature in the holographic dark energy model
• Microlensing-Based Estimate of the Mass Fraction in Compact Objects in Lens
• Early supersymmetric cold dark matter substructure
• Kinematics of Milky Way Satellites in a Lambda Cold Dark Matter Universe
• Amplification of Cosmological Inhomogeneities by the QCD Transition
• X-Ray and Optical Microlensing in the Lensed Quasar PG 1115+080
• The surface brightness of dark matter: unique signatures of neutralino annihilation in the Galactic halo
• Dark Matter Annihilation in Substructures Revised
• Indirect Dark Matter Detection from Dwarf Satellites: Joint Expectations from Astrophysics and Supersymmetry
• The survival and disruption of CDM micro-haloes: implications for direct and indirect detection experiments
• Galactic Substructure and Dark Matter Annihilation in the Milky Way Halo
• Galactic Substructure and Direct Detection of Dark Matter
• Kinetic decoupling of neutralino dark matter
• Time delay and lens redshift for the doubly imaged BAL quasar SBS1520+530
• Gravitational Microlensing
• Exploring Dark Matter with Milky Way substructure
• The Dark-Matter Fraction in the Elliptical Galaxy Lensing the Quasar PG1115+080
• Can Astrophysical Gamma Ray Sources Mimic Dark Matter Annihilation in Galactic Satellites?
• On mini-halo encounters with stars
• The Gamma-Ray-Flux Probability Distribution Function from Galactic Halo Substructure
• Proper motion of gamma-rays from microhalo sources
• Time delay measurement of the lensed quasar HE1104-1805
• Possible Indications of a Clumpy Dark Matter Halo
• A Rapid Microlensing Event in the Q0957+561 A,B Gravitational Lens System
• Difficulty of detecting minihalos via $\gamma$-rays from dark matter annihilation
• Can proper motions of dark-matter subhalos be detected?
• Optical monitoring of the gravitationally lensed quasar Q2237+0305 from APO between June 1995 and January 1998
• Astrophysical limitations to the identification of dark matter: indirect neutrino signals vis-a-vis direct detection recoil rates
• The detection of sub-solar mass dark matter halos
• Galactic Substructure and Energetic Neutrinos from the Sun and the Earth
• Short-timescale Fluctuations in the Difference Light Curves of QSO 0957+561A,B: Microlensing or Noise?
• Quasar Microlensing: when compact masses mimic smooth matter
• Anisotropy of dark matter annihilation with respect to the Galactic plane
• Generalized Space-time Noncommutative Inflation
• Relativistic Mass Ejecta from Phase-transition-induced Collapse of Neutron Stars
• The Observatory for Multi-Epoch Gravitational Lens Astrophysics (OMEGA)

Cited by in corpus (12)

• Reheating Effects in the Matter Power Spectrum and Implications for Substructure
• Small-scale clumps of dark matter
• Thermal decoupling and the smallest subhalo mass in dark matter models with Sommerfeld-enhanced annihilation rates
• Resolving Small-Scale Dark Matter Structures Using Multi-Source Indirect Detection
• Dark Matter Production Mechanisms with a Non-Thermal Cosmological History - A Classification
• The Abundance and Structure of Subhaloes near the Free Streaming Scale and Their Impact on Indirect Dark Matter Searches
• Evolution of dark matter microhalos through stellar encounters
• The Effects of Halo-to-Halo Variation on Substructure Lensing
• Transient Weak-Lensing by Cosmological Dark Matter Microhaloes
• Deep learning the astrometric signature of dark matter substructure
• Probing planetary mass dark matter in galaxies: gravitational nanolensing of multiply imaged quasars
• Dark matter with excitable levels