ALMA Measurement of 10 kpc-scale Lensing Power Spectra towards the Lensed Quasar MG J0414+0534

Abstract

The lensing power spectra for gravitational potential, astrometric shift, and convergence perturbations are powerful probes to investigate dark matter structures on small scales. We report the first lower and upper bounds of these lensing power spectra on angular scale $\sim 1$arcsec towards the anomalous quadruply lensed quasar MGJ0414+0534 at a redshift $z=2.639$. To obtain the spectra, we conducted observations of MGJ0414+0534 using the Atacama Large Millimeter/submillimeter Array (ALMA) with high angular resolution (0.02 arcsec to 0.05 arcsec). We developed a new partially non-parametric method in which Fourier coefficients of potential perturbation are adjusted to minimize the difference between linear combinations of weighted mean de-lensed images. Using positions of radio jet components, extended dust emission on scales $>1$kpc, and mid-infrared flux ratios, the range of measured convergence, astrometric shift, and potential powers at an angular scale of $\sim 1.1$arcsec (corresponding to an angular wave number of $l=1.2\times 10^6$ or $\sim 9$kpc in the primary lens plane) within $1\sigma$ are ${\Delta }_{\kappa }=0.021-0.028$, ${\Delta }_{\alpha }=7-9$mas, and ${\Delta }_{\psi }=1.2-1.6$${\text{mas}}^2$, respectively. Our result is consistent with the predicted abundance of halos in the line of sight and subhalos in cold dark matter models. Our partially non-parametric lens models suggest a presence of a clump in the vicinity of object Y, a possible dusty dwarf galaxy and some small clumps in the vicinity of other lensed quadruple images. Although much fainter than the previous report, we detected weak continuum emission possibly from object Y with a peak flux of $\sim 100\mu \text{Jy}{\text{beam}}^{-1}$ at the $\sim 4\sigma$ level.

arXiv comment54 pages, 35 figures, version accepted in ApJ. Analyses of models with a possible dwarf galaxy, object Y and that of chi^2 fit in the visibility plane were added. A new section 7 about CDM consistency was added. The angular scale of the smallest angular bin in Figure 24 was corrected

References in corpus (63)

• Dark Matter Substructure in Galactic Halos
• Where are the missing galactic satellites?
• Reconciling dwarf galaxies with LCDM cosmology: Simulating a realistic population of satellites around a Milky Way-mass galaxy
• Direct Detection of CDM Substructure
• Evidence for substructure in lens galaxies?
• Massive Dark-matter halos and Evolution of Early-type Galaxies to z=1
• Gravitational detection of a low-mass dark satellite at cosmological distance
• Compound gravitational lensing as a probe of dark matter substructure within galaxy halos
• Detection of lensing substructure using ALMA observations of the dusty galaxy SDP.81
• Detection of a Dark Substructure through Gravitational Imaging
• Bayesian Strong Gravitational-Lens Modeling on Adaptive Grids: Objective Detection of Mass Substructure in Galaxies
• Warm dark matter chills out: constraints on the halo mass function and the free-streaming length of dark matter with 8 quadruple-image strong gravitational lenses
• Dust and Extinction Curves in Galaxies with z>0: The Interstellar Medium of Gravitational Lens Galaxies
• There is No Missing Satellites Problem
• Tests for Substructure in Gravitational Lenses
• Probing Dark Matter Substructure in Lens Galaxies
• Inference of the Cold Dark Matter substructure mass function at z=0.2 using strong gravitational lenses
• SHARP -- VII. New constraints on the dark matter free-streaming properties and substructure abundance from gravitationally lensed quasars
• Direct measurement of dark matter halo ellipticity from two-dimensional lensing shear maps of 25 massive clusters
• ALMA Observations of SPT-Discovered, Strongly Lensed, Dusty, Star-Forming Galaxies
• Modelling the line-of-sight contribution in substructure lensing
• Joint constraints on thermal relic dark matter from strong gravitational lensing, the Lyman-$\alpha$ forest, and Milky Way satellites
• Low-mass halo perturbations in strong gravitational lenses at redshift z$\sim$0.5 are consistent with CDM
• Effects of Dark Matter Substructures on Gravitational Lensing: Results from the Aquarius Simulations
• High resolution imaging of the anomalous flux-ratio gravitational lens system CLASS B2045+265: Dark or luminous satellites?
• A New Hybrid Framework to Efficiently Model Lines of Sight to Gravitational Lenses
• Spectroscopic Gravitational Lensing and Limits on the Dark Matter Substructure in Q2237+0305
• Subaru Mid-infrared Imaging of the Quadruple Lenses PG1115+080 and B1422+231: Limits on Substructure Lensing
• Fitting Gravitational Lenses: Truth or Delusion
• The Importance of Intergalactic Structure to Gravitationally Lensed Quasars
• The role of luminous substructure in the gravitational lens system MG 2016+112
• On the Effects of Line-of-Sight Structures on Lensing Flux-ratio Anomalies in a LCDM Universe
• A New Measure for Weak Lensing Flexion
• SHARP - IV. An apparent flux ratio anomaly resolved by the edge-on disc in B0712+472
• Substructure in the lens HE 0435-1223
• Probing the nature of dark matter by forward modeling flux ratios in strong gravitational lenses
• Flux-ratio anomalies from discs and other baryonic structures in the Illustris simulation
• Subaru Mid-infrared Imaging of the Quadruple Lenses. II. Unveiling Lens Structure of MG0414+0534 and Q2237+030
• Detection of Substructure in the Gravitationally Lensed Quasar MG0414+0534 using Mid-Infrared and Radio VLBI Observations
• Strong lensing signatures of luminous structure and substructure in early-type galaxies
• Modelling high resolution ALMA observations of strongly lensed highly star forming galaxies detected by Herschel
• Shapes and alignments of dark matter haloes and their brightest cluster galaxies in 39 strong lensing clusters
• The inner mass power spectrum of galaxies using strong gravitational lensing: beyond linear approximation
• Substructure Lensing: Effects of Galaxies, Globular Clusters & Satellite Streams
• ALMA Imprint of Intergalactic Dark Structures in the Gravitational Lens SDP.81
• First Results on Dark Matter Substructure from Astrometric Weak Lensing
• Extended Source Effects in Substructure Lensing
• Constraints on mixed dark matter from anomalous strong lens systems
• Constraints on warm dark matter from weak lensing in anomalous quadruple lenses
• COSMOGRAIL: the COSmological MOnitoring of GRAvItational Lenses VIII. Deconvolution of high resolution near-IR images and simple mass models for 7 gravitationally lensed quasars
• Quantifying the Line-of-Sight Halo Contribution to the Dark Matter Convergence Power Spectrum from Strong Gravitational Lenses
• Predictably Missing Satellites: Subhalo Abundance in Milky Way-like Halos
• Three-dimensional Mapping of CDM Substructure at Submillimeter Wavelengths
• Direct Mapping of Massive Compact Objects in Extragalactic Dark Halos
• On the Origin of Flux Ratio Anomaly in Quadruple Lens Systems
• A flux-ratio anomaly in the CO spectral line emission from gravitationally-lensed quasar MG J0414+0534
• The Missing Satellite Problem Outside of the Local Group. II. Statistical Properties of Satellites of Milky Way-like Galaxies
• Weak Lensing by Intergalactic Mini-Structures in Quadruple Lens Systems: Simulation and Detection
• Lens Galaxy Environments and Anomalous Flux Ratios in Gravitational Lenses
• Modelling high-resolution ALMA observations of strongly lensed dustystar forming galaxies detected by Herschel
• X-ray microlensing in the quadruply lensed quasar Q2237+0305
• Probing sub-galactic mass structure with the power spectrum of surface-brightness anomalies in high-resolution observations of galaxy-galaxy strong gravitational lenses. I. Power-spectrum measurement and feasibility study
• Evidence for a Dusty Dark Dwarf Galaxy in the Quadruple Lens MG0414+0534