Professor Richard Massey's Outputs (190)

A gravitationally boosted MUSE survey for emission-line galaxies at z ≳ 5 behind the massive cluster RCS 0224 (2017)
Journal Article
Smit, R., Swinbank, A., Massey, R., Richard, J., Smail, I., & Kneib, J. (2017). A gravitationally boosted MUSE survey for emission-line galaxies at z ≳ 5 behind the massive cluster RCS 0224. Monthly Notices of the Royal Astronomical Society, 476(3), 3306-3323. https://doi.org/10.1093/mnras/stx245

We present a Very Large Telescope/Multi Unit Spectroscopic Explorer (MUSE) survey of lensed high-redshift galaxies behind the z = 0.77 cluster RCS 0224−0002. We study the detailed internal properties of a highly magnified (μ ∼ 29) z = 4.88 galaxy see... Read More about A gravitationally boosted MUSE survey for emission-line galaxies at z ≳ 5 behind the massive cluster RCS 0224.

Cosmic particle colliders: simulations of self-interacting dark matter with anisotropic scattering (2017)
Journal Article
Robertson, A., Massey, R., & Eke, V. (2017). Cosmic particle colliders: simulations of self-interacting dark matter with anisotropic scattering. Monthly Notices of the Royal Astronomical Society, 467(4), 4719-4730. https://doi.org/10.1093/mnras/stx463

We investigate how self-interacting dark matter (SIDM) with anisotropic scattering affects the evolution of isolated dark matter haloes as well as systems with two colliding haloes. For isolated haloes, we find that the evolution can be adequately ca... Read More about Cosmic particle colliders: simulations of self-interacting dark matter with anisotropic scattering.

Abell 2744: too much substructure for ΛCDM? (2017)
Journal Article
Schwinn, J., Jauzac, M., Baugh, C., Bartelmann, M., Eckert, D., Harvey, D., …Massey, R. (2017). Abell 2744: too much substructure for ΛCDM?. Monthly Notices of the Royal Astronomical Society, 467(3), 2913-2923. https://doi.org/10.1093/mnras/stx277

The massive substructures found in Abell 2744 by Jauzac et al. present a challenge to the cold dark matter paradigm due to their number and proximity to the cluster centre. We use one of the biggest N-body simulations, the Millennium XXL, to investig... Read More about Abell 2744: too much substructure for ΛCDM?.

Problems using ratios of galaxy shape moments in requirements for weak lensing surveys (2017)
Journal Article
Israel, H., Kitching, T., Massey, R., & Cropper, M. (2017). Problems using ratios of galaxy shape moments in requirements for weak lensing surveys. Astronomy & Astrophysics, 598, Article A46. https://doi.org/10.1051/0004-6361/201628394

Context. The shapes of galaxies are typically quantified by ratios of their quadrupole moments. Knowledge of these ratios (i.e. their measured standard deviation) is commonly used to assess the efficiency of weak gravitational lensing surveys. For fa... Read More about Problems using ratios of galaxy shape moments in requirements for weak lensing surveys.

Thermal, Structural, and Optical Analysis of a Balloon-Based Imaging System (2017)
Journal Article
Borden, M., Lewis, D., Ochoa, H., Jones-Wilson, L., Susca, S., Porter, M., …Netterfield, B. (2017). Thermal, Structural, and Optical Analysis of a Balloon-Based Imaging System. Publications of the Astronomical Society of the Pacific, 129, Article 035001. https://doi.org/10.1088/1538-3873/129/973/035001

The Subarcsecond Telescope And BaLloon Experiment, STABLE, is the fine stage of a guidance system for a high-altitude ballooning platform designed to demonstrate subarcsecond pointing stability over one minute using relatively dim guide stars in the... Read More about Thermal, Structural, and Optical Analysis of a Balloon-Based Imaging System.

Looking for dark matter trails in colliding galaxy clusters (2016)
Journal Article
Harvey, D., Robertson, A., Massey, R., & Kneib, J. (2017). Looking for dark matter trails in colliding galaxy clusters. Monthly Notices of the Royal Astronomical Society, 464(4), 3991-3997. https://doi.org/10.1093/mnras/stw2671

If dark matter interacts, even weakly, via non-gravitational forces, simulations predict that it will be preferentially scattered towards the trailing edge of the halo during collisions between galaxy clusters. This will temporarily create a non-symm... Read More about Looking for dark matter trails in colliding galaxy clusters.

What does the Bullet Cluster tell us about self-interacting dark matter? (2016)
Journal Article
Robertson, A., Massey, R., & Eke, V. (2017). What does the Bullet Cluster tell us about self-interacting dark matter?. Monthly Notices of the Royal Astronomical Society, 465(1), 569-587. https://doi.org/10.1093/mnras/stw2670

We perform numerical simulations of the merging galaxy cluster 1E 0657−56 (the Bullet Cluster), including the effects of elastic dark matter scattering. In a similar manner to the stripping of gas by ram pressure, dark matter self-interactions would... Read More about What does the Bullet Cluster tell us about self-interacting dark matter?.

The Extraordinary Amount of Substructure in the Hubble Frontier Fields Cluster Abell 2744 (2016)
Journal Article
Jauzac, M., Eckert, D., Schwinn, J., Harvey, D., Baugh, C., Robertson, A., …Tchernin, C. (2016). The Extraordinary Amount of Substructure in the Hubble Frontier Fields Cluster Abell 2744. Monthly Notices of the Royal Astronomical Society, 463(4), 3876-3893. https://doi.org/10.1093/mnras/stw2251

We present a joint optical/X-ray analysis of the massive galaxy cluster Abell 2744 (z=0.308). Our strong- and weak-lensing analysis within the central region of the cluster, i.e., at R < 1 Mpc from the brightest cluster galaxy, reveals eight substruc... Read More about The Extraordinary Amount of Substructure in the Hubble Frontier Fields Cluster Abell 2744.

VIS: the visible imager for Euclid (2016)
Presentation / Conference Contribution
Cropper, M., Pottinger, S., Niemi, S., Azzollini, R., Denniston, J., Szafraniec, M., Awan, S., Mellier, Y., Berthe, M., Martignac, J., Cara, C., Di Giorgio, A.-M., Sciortino, A., Bozzo, E., Genolet, L., Cole, R., Philippon, A., Hailey, M., Hunt, T., Swindells, I., …Tong, E. C. (2016, September). VIS: the visible imager for Euclid. Presented at Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave, Edinburgh

Euclid-VIS is the large format visible imager for the ESA Euclid space mission in their Cosmic Vision program, scheduled for launch in 2020. Together with the near infrared imaging within the NISP instrument, it forms the basis of the weak lensing me... Read More about VIS: the visible imager for Euclid.

IDCS J1426.5+3508: Weak Lensing Analysis of a Massive Galaxy Cluster at z = 1.75 (2016)
Journal Article
Mo, W., Gonzalez, A., Jee, M., Massey, R., Rhodes, J., Brodwin, M., …Zeimann, G. (2016). IDCS J1426.5+3508: Weak Lensing Analysis of a Massive Galaxy Cluster at z = 1.75. Astrophysical Journal, 818(2), Article L25. https://doi.org/10.3847/2041-8205/818/2/l25

We present a weak lensing study of the galaxy cluster IDCS J1426.5+3508 at z = 1.75, which is the highest-redshift strong lensing cluster known and the most distant cluster for which a weak lensing analysis has been undertaken. Using F160W, F814W, an... Read More about IDCS J1426.5+3508: Weak Lensing Analysis of a Massive Galaxy Cluster at z = 1.75.

Hubble Frontier Fields: predictions for the return of SN Refsdal with the MUSE and GMOS spectrographs (2016)
Journal Article
Jauzac, M., Richard, J., Limousin, M., Knowles, K., Mahler, G., Smith, G., …Rexroth, M. (2016). Hubble Frontier Fields: predictions for the return of SN Refsdal with the MUSE and GMOS spectrographs. Monthly Notices of the Royal Astronomical Society, 457(2), 2029-2042. https://doi.org/10.1093/mnras/stw069

We present a high-precision mass model of the galaxy cluster MACS J1149.6+ 2223, based on a strong gravitational lensing analysis of Hubble Space Telescope Frontier Fields (HFF) imaging data and spectroscopic follow-up with Gemini/Gemini Multi-Object... Read More about Hubble Frontier Fields: predictions for the return of SN Refsdal with the MUSE and GMOS spectrographs.

Frontier Fields: Subaru Weak-Lensing Analysis of the Merging Galaxy Cluster A2744 (2016)
Journal Article
Medezinski, E., Umetsu, K., Okabe, N., Nonino, M., Molnar, S., Massey, R., …Merten, J. (2016). Frontier Fields: Subaru Weak-Lensing Analysis of the Merging Galaxy Cluster A2744. Astrophysical Journal, 817(1), Article 24. https://doi.org/10.3847/0004-637x/817/1/24

We present a weak-lensing analysis of the merging Frontier Fields (FF) cluster Abell 2744 using new Subaru/Suprime-Cam imaging. The wide-field lensing mass distribution reveals this cluster is comprised of four distinct substructures. Simultaneously... Read More about Frontier Fields: Subaru Weak-Lensing Analysis of the Merging Galaxy Cluster A2744.

Warm-hot baryons comprise 5-10 per cent of filaments in the cosmic web (2015)
Journal Article
Eckert, D., Jauzac, M., Shan, H., Kneib, J., Erben, T., Israel, H., …Tchernin, C. (2015). Warm-hot baryons comprise 5-10 per cent of filaments in the cosmic web. Nature, 528, 105-107. https://doi.org/10.1038/nature16058

Observations of the cosmic microwave background indicate that baryons account for 5 per cent of the Universe’s total energy content1. In the local Universe, the census of all observed baryons falls short of this estimate by a factor of two2, 3. Cosmo... Read More about Warm-hot baryons comprise 5-10 per cent of filaments in the cosmic web.

On scale-dependent cosmic shear systematic effects (2015)
Journal Article
Kitching, T., Taylor, A., Cropper, M., Hoekstra, H., Hood, R., Massey, R., & Niemi, S. (2016). On scale-dependent cosmic shear systematic effects. Monthly Notices of the Royal Astronomical Society, 455(3), 3319-3332. https://doi.org/10.1093/mnras/stv2523

In this paper, we investigate the impact that realistic scale-dependent systematic effects may have on cosmic shear tomography. We model spatially varying residual galaxy ellipticity and galaxy size variations in weak lensing measurements and propaga... Read More about On scale-dependent cosmic shear systematic effects.

Self-interacting dark matter scattering rates through cosmic time (2015)
Journal Article
Robertson, A., Massey, R., Eke, V., & Bower, R. (2015). Self-interacting dark matter scattering rates through cosmic time. Monthly Notices of the Royal Astronomical Society, 453(3), 2267-2276. https://doi.org/10.1093/mnras/stv1805

We estimate the rate of dark matter scattering in collapsed structures throughout the history of the Universe. If the scattering cross-section is velocity independent, then the canonical picture is correct that scatterings occur mainly at late times.... Read More about Self-interacting dark matter scattering rates through cosmic time.

How well can charge transfer inefficiency be corrected? A parameter sensitivity study for iterative correction (2015)
Journal Article
Israel, H., Massey, R., Prod'homme, T., Cropper, M., Cordes, O., Gow, J., …Verhoeve, P. (2015). How well can charge transfer inefficiency be corrected? A parameter sensitivity study for iterative correction. Monthly Notices of the Royal Astronomical Society, 453(1), 561-580. https://doi.org/10.1093/mnras/stv1660

Radiation damage to space-based charge-coupled device detectors creates defects which result in an increasing charge transfer inefficiency (CTI) that causes spurious image trailing. Most of the trailing can be corrected during post-processing, by mod... Read More about How well can charge transfer inefficiency be corrected? A parameter sensitivity study for iterative correction.

The offsets between galaxies and their dark matter in Λ cold dark matter (2015)
Journal Article
Schaller, M., Robertson, A., Massey, R., Bower, R. G., & Eke, V. R. (2015). The offsets between galaxies and their dark matter in Λ cold dark matter. Monthly Notices of the Royal Astronomical Society: Letters, 453(1), L58-L62. https://doi.org/10.1093/mnrasl/slv104

We use the ‘Evolution and Assembly of GaLaxies and their Environments’ (EAGLE) suite of hydrodynamical cosmological simulations to measure offsets between the centres of stellar and dark matter components of galaxies. We find that the vast majority (... Read More about The offsets between galaxies and their dark matter in Λ cold dark matter.

Hubble Frontier Fields: a high-precision strong-lensing analysis of the massive galaxy cluster Abell 2744 using ∼180 multiple images (2015)
Journal Article
Jauzac, M., Richard, J., Jullo, E., Clément, B., Limousin, M., Kneib, J., …Rexroth, M. (2015). Hubble Frontier Fields: a high-precision strong-lensing analysis of the massive galaxy cluster Abell 2744 using ∼180 multiple images. Monthly Notices of the Royal Astronomical Society, 452(2), 1437-1446. https://doi.org/10.1093/mnras/stv1402

We present a high-precision mass model of galaxy cluster Abell 2744, based on a strong gravitational-lensing analysis of the Hubble Space Telescope Frontier Fields (HFF) imaging data, which now include both Advanced Camera for Surveys and Wide Field... Read More about Hubble Frontier Fields: a high-precision strong-lensing analysis of the massive galaxy cluster Abell 2744 using ∼180 multiple images.

CLASH: The Concentration-Mass Relation of Galaxy Clusters (2015)
Journal Article
Merten, J., Meneghetti, M., Postman, M., Umetsu, K., Zitrin, A., Medezinski, E., …Zheng, W. (2015). CLASH: The Concentration-Mass Relation of Galaxy Clusters. Astrophysical Journal, 806(1), Article 4. https://doi.org/10.1088/0004-637x/806/1/4

We present a new determination of the concentration–mass (c–M) relation for galaxy clusters based on our comprehensive lensing analysis of 19 X-ray selected galaxy clusters from the Cluster Lensing and Supernova Survey with Hubble (CLASH). Our sample... Read More about CLASH: The Concentration-Mass Relation of Galaxy Clusters.

The behaviour of dark matter associated with four bright cluster galaxies in the 10 kpc core of Abell 3827 (2015)
Journal Article
Massey, R., Williams, L., Smit, R., Swinbank, M., Kitching, D., Harvey, D., …Tittley, E. (2015). The behaviour of dark matter associated with four bright cluster galaxies in the 10 kpc core of Abell 3827. Monthly Notices of the Royal Astronomical Society, 449(4), 3393-3406. https://doi.org/10.1093/mnras/stv467

Galaxy cluster Abell 3827 hosts the stellar remnants of four almost equally bright elliptical galaxies within a core of radius 10 kpc. Such corrugation of the stellar distribution is very rare, and suggests recent formation by several simultaneous me... Read More about The behaviour of dark matter associated with four bright cluster galaxies in the 10 kpc core of Abell 3827.