The surprising accuracy of isothermal Jeans modelling of self-interacting dark matter density profiles (2020)
Journal Article
Robertson, A., Massey, R., Eke, V., Schaye, J., & Theuns, T. (2021). The surprising accuracy of isothermal Jeans modelling of self-interacting dark matter density profiles. Monthly Notices of the Royal Astronomical Society, 501(3), 4610-5634. https://doi.org/10.1093/mnras/staa3954

Recent claims of observational evidence for self-interacting dark matter (SIDM) have relied on a semi-analytic method for predicting the density profiles of galaxies and galaxy clusters containing SIDM. We present a thorough description of this metho... Read More about The surprising accuracy of isothermal Jeans modelling of self-interacting dark matter density profiles.

Reconciling galaxy cluster shapes, measured by theorists vs observers (2020)
Journal Article
Harvey, D., Robertson, A., Tam, S., Jauzac, M., Massey, R., Rhodes, J., & McCarthy, I. G. (2021). Reconciling galaxy cluster shapes, measured by theorists vs observers. Monthly Notices of the Royal Astronomical Society, 500(2), 2627-2644. https://doi.org/10.1093/mnras/staa3193

If properly calibrated, the shapes of galaxy clusters can be used to investigate many physical processes: from feedback and quenching of star formation, to the nature of dark matter. Theorists frequently measure shapes using moments of inertia of sim... Read More about Reconciling galaxy cluster shapes, measured by theorists vs observers.

Mapping dark matter and finding filaments: calibration of lensing analysis techniques on simulated data (2020)
Journal Article
Tam, S., Massey, R., Jauzac, M., & Robertson, A. (2020). Mapping dark matter and finding filaments: calibration of lensing analysis techniques on simulated data. Monthly Notices of the Royal Astronomical Society, 496(3), 3973-3990. https://doi.org/10.1093/mnras/staa1756

We quantify the performance of mass mapping techniques on mock imaging and gravitational lensing data of galaxy clusters. The optimum method depends upon the scientific goal. We assess measurements of clusters’ radial density profiles, departures fro... Read More about Mapping dark matter and finding filaments: calibration of lensing analysis techniques on simulated data.

What does strong gravitational lensing? The mass and redshift distribution of high-magnification lenses (2020)
Journal Article
Robertson, A., Smith, G. P., Massey, R., Eke, V., Jauzac, M., Bianconi, M., & Ryczanowski, D. (2020). What does strong gravitational lensing? The mass and redshift distribution of high-magnification lenses. Monthly Notices of the Royal Astronomical Society, 495(4), 3727-3739. https://doi.org/10.1093/mnras/staa1429

Many distant objects can only be detected, or become more scientifically valuable, if they have been highly magnified by strong gravitational lensing. We use eagle and bahamas, two recent cosmological hydrodynamical simulations, to predict the probab... Read More about What does strong gravitational lensing? The mass and redshift distribution of high-magnification lenses.

On building a cluster watch-list for identifying strongly lensed supernovae, gravitational waves and kilonovae (2020)
Journal Article
Ryczanowski, D., Smith, G. P., Bianconi, M., Massey, R., Robertson, A., & Jauzac, M. (2020). On building a cluster watch-list for identifying strongly lensed supernovae, gravitational waves and kilonovae. Monthly Notices of the Royal Astronomical Society, 495(2), 1666-1671. https://doi.org/10.1093/mnras/staa1274

Motivated by discovering strongly-lensed supernovae, gravitational waves, and kilonovae in the 2020s, we investigate whether to build a watch-list of clusters based on observed cluster properties (i.e. lens-plane selection) or on the detectability of... Read More about On building a cluster watch-list for identifying strongly lensed supernovae, gravitational waves and kilonovae.

Understanding the large inferred Einstein radii of observed low-mass galaxy clusters (2020)
Journal Article
Robertson, A., Massey, R., & Eke, V. (2020). Understanding the large inferred Einstein radii of observed low-mass galaxy clusters. Monthly Notices of the Royal Astronomical Society, 494(4), 4706-4712. https://doi.org/10.1093/mnras/staa1076

We assess a claim that observed galaxy clusters with mass ∼1014M⊙ are more centrally concentrated than predicted in lambda cold dark matter (ΛCDM). We generate mock strong gravitational lensing observations, taking the lenses from a cosmological hydr... Read More about Understanding the large inferred Einstein radii of observed low-mass galaxy clusters.

The BUFFALO HST Survey (2020)
Journal Article
Steinhardt, C. L., Jauzac, M., Acebron, A., Atek, H., Capak, P., Davidzon, I., …Zitrin, A. (2020). The BUFFALO HST Survey. Astrophysical Journal Supplement, 247(2), Article 64. https://doi.org/10.3847/1538-4365/ab75ed

The Beyond Ultra-deep Frontier Fields and Legacy Observations (BUFFALO) is a 101 orbit + 101 parallel Cycle 25 Hubble Space Telescope (HST) Treasury program taking data from 2018 to 2020. BUFFALO will expand existing coverage of the Hubble Frontier F... Read More about The BUFFALO HST Survey.