Probing compact dark matter objects with microlensing in gravitationally lensed quasars
arXiv:2304.01320 · doi:10.1051/0004-6361/202245615
Abstract
The microlensing signal in the light curves of gravitationally lensed quasars can shed light on the dark matter (DM) composition in their lensing galaxies. Here, we investigate a sample of six lensed quasars from the most recent and best COSMOGRAIL observations: HE~11041805, HE~04351223, RX~J11311231, WFI~20334723, PG~1115080, and J12064332, yielding a total of eight microlensing light curves, when combining independent image pairs and typically spanning ten years. We explore the microlensing signals to determine whether the standard assumptions on the stellar populations are sufficient to account for the amplitudes of the measured signals. We use the most detailed lens models to date from the H0LiCOW/TDCOSMO collaboration to generate simulated microlensing light curves. Finally, we propose a methodology based on the Kolmogorov-Smirnov test to verify whether the observed microlensing amplitudes in our data are compatible with the most standard scenario, whereby galaxies are composed of stars as compact bodies and smoothly distributed DM. Given our current sample, we show that the standard scenario cannot be rejected, in contrast with previous results by Hawkins (2020a), claiming that a population of stellar mass primordial black holes (PBHs) is necessary to explain the amplitude of the microlensing signals in lensed quasar light curves. We further estimate the number of microlensing light curves needed to distinguish between the standard scenario with stellar microlensing and a scenario that describes all the DM contained in galaxies in the form of compact objects such as PBHs, with a mean mass of . We find that about 900 microlensing curves from the Rubin Observatory will be sufficient to discriminate between the two extreme scenarios at a 95\% confidence level.
References in corpus (46)
- Observation of Gravitational Waves from a Binary Black Hole Merger
- The Structure of Cold Dark Matter Halos
- LSST: from Science Drivers to Reference Design and Anticipated Data Products
- Did LIGO detect dark matter?
- H0LiCOW XIII. A 2.4% measurement of from lensed quasars: tension between early and late-Universe probes
- Limits on the Macho Content of the Galactic Halo from the EROS-2 Survey of the Magellanic Clouds
- Primordial Black Hole Scenario for the Gravitational-Wave Event GW150914
- Black Hole Masses and Eddington Ratios at 0.3<z<4
- Sterile Neutrino Dark Matter
- H0LiCOW - IX. Cosmographic analysis of the doubly imaged quasar SDSS 1206+4332 and a new measurement of the Hubble constant
- The Quasar Accretion Disk Size - Black Hole Mass Relation
- The Quasar Accretion Disk Size -- Black Hole Mass Relation
- H0LiCOW I. Lenses in COSMOGRAIL's Wellspring: Program Overview
- MACHO Project Limits on Black Hole Dark Matter in the 1-30 Solar Mass Range
- Lenstronomy: multi-purpose gravitational lens modelling software package
- The Sloan Lens ACS Survey. IX. Colors, Lensing and Stellar Masses of Early-type Galaxies
- A SHARP view of H0LiCOW: from three time-delay gravitational lens systems with adaptive optics imaging
- Cosmology from gravitational lens time delays and Planck data
- TDCOSMO. I. An exploration of systematic uncertainties in the inference of from time-delay cosmography
- Primordial black holes with an accurate QCD equation of state
- The OGLE View of Microlensing towards the Magellanic Clouds. IV. OGLE-III SMC Data and Final Conclusions on MACHOs
- Quasars Are Not Light-Bulbs: Testing Models of Quasar Lifetimes with the Observed Eddington Ratio Distribution
- Size is Everything: Universal Features of Quasar Microlensing with Extended Sources
- Microlensing-Based Estimate of the Mass Fraction in Compact Objects in Lens
- The Microlensing Properties of a Sample of 87 Lensed Quasars
- Low redshift AGN in the Hamburg/ESO Survey: II. The active black hole mass function and the distribution function of Eddington ratios
- COSMOGRAIL: the COSmological MOnitoring of GRAvItational Lenses XI. Techniques for time delay measurement in presence of microlensing
- Microlensing variability in the gravitationally lensed quasar QSO 2237+0305 = the Einstein Cross. II. Energy profile of the accretion disk
- H0LiCOW XII. Lens mass model of WFI2033-4723 and blind measurement of its time-delay distance and
- COSMOGRAIL XIX: Time delays in 18 strongly lensed quasars from 15 years of optical monitoring
- Quasar Accretion Disk Sizes From Continuum Reverberation Mapping From the Dark Energy Survey
- The Average Size and Temperature Profile of Quasar Accretion Disks
- Dark Matter Fraction in Lens Galaxies: New Estimates from Microlensing
- Microlensing variability in the gravitationally lensed quasar Q2237+0305 = the Einstein Cross, I. Spectrophotometric monitoring with the VLT
- X-Ray And Optical Flux Ratio Anomalies In Quadruply Lensed Quasars. II. Mapping the Dark Matter Content in Elliptical Galaxies
- The signature of primordial black holes in the dark matter halos of galaxies
- Simultaneous Estimation of Time Delays and Quasar Structure
- Accretion Disk Size Measurement and Time Delays in the Lensed Quasar WFI 2033-4723
- A new parameter space study of cosmological microlensing
- A Microlensing Accretion Disk Size Measurement in the Lensed Quasar WFI 2026-4536
- Measuring accretion disk sizes of lensed quasars with microlensing time delay in multi-band light curves
- SDSS J1004+4112: the case for a galaxy cluster dominated by primordial black holes
- A Quasar Microlensing Light Curve Generator for LSST
- The Initial Mass Function of Lens Galaxies from Quasar Microlensing
- Interpretation of the OGLE Q2237+0305 microlensing light-curve
- Limiting the Abundance of LIGO/Virgo Black Holes with Microlensing Observations of Quasars of Finite Size