Outputs (8)

Halo concentration strengthens dark matter constraints in galaxy-galaxy strong lensing analyses (2021)
Journal Article
Amorisco, N. C., Nightingale, J., He, Q., Amvrosiadis, A., Cao, X., Cole, S., Etherington, A., Frenk, C. S., Li, R., Massey, R., & Robertson, A. (2022). Halo concentration strengthens dark matter constraints in galaxy-galaxy strong lensing analyses. Monthly Notices of the Royal Astronomical Society, 510, 2464-2479. https://doi.org/10.1093/mnras/stab3527

A defining prediction of the cold dark matter cosmological model is the existence of a very large population of low-mass haloes. This population is absent in models in which the dark matter particle is warm (WDM). These alternatives can, in principle... Read More about Halo concentration strengthens dark matter constraints in galaxy-galaxy strong lensing analyses.

Euclid preparation: XII. Optimizing the photometric sample of the Euclid survey for galaxy clustering and galaxy-galaxy lensing analyses (2021)
Journal Article
Pocino, A., Tutusaus, I., Castander, F., Fosalba, P., Crocce, M., Porredon, A., …Zucca, E. (2021). Euclid preparation: XII. Optimizing the photometric sample of the Euclid survey for galaxy clustering and galaxy-galaxy lensing analyses. Astronomy & Astrophysics, 655, Article A44. https://doi.org/10.1051/0004-6361/202141061

Photometric redshifts (photo-zs) are one of the main ingredients in the analysis of cosmological probes. Their accuracy particularly affects the results of the analyses of galaxy clustering with photometrically selected galaxies (GCph) and weak lensi... Read More about Euclid preparation: XII. Optimizing the photometric sample of the Euclid survey for galaxy clustering and galaxy-galaxy lensing analyses.

Euclid: Constraining dark energy coupled to electromagnetism using astrophysical and laboratory data (2021)
Journal Article
Martinelli, M., Martins, C., Nesseris, S., Tutusaus, I., Blanchard, A., Camera, S., …Vassallo, T. (2021). Euclid: Constraining dark energy coupled to electromagnetism using astrophysical and laboratory data. Astronomy & Astrophysics, 654, Article A148. https://doi.org/10.1051/0004-6361/202141353

In physically realistic, scalar-field-based dynamical dark energy models (including, e.g., quintessence), one naturally expects the scalar field to couple to the rest of the model’s degrees of freedom. In particular, a coupling to the electromagnetic... Read More about Euclid: Constraining dark energy coupled to electromagnetism using astrophysical and laboratory data.

Euclid Preparation. XIV. The Complete Calibration of the Color-Redshift Relation (C3R2) Survey: Data Release 3 (2021)
Journal Article
Stanford, S., Masters, D., Darvish, B., Stern, D., Cohen, J., Capak, P., …Zucca, E. (2021). Euclid Preparation. XIV. The Complete Calibration of the Color-Redshift Relation (C3R2) Survey: Data Release 3. Astrophysical Journal Supplement, 256(1), Article 9. https://doi.org/10.3847/1538-4365/ac0833

The Complete Calibration of the Color–Redshift Relation (C3R2) survey is obtaining spectroscopic redshifts in order to map the relation between galaxy color and redshift to a depth of i ∼ 24.5 (AB). The primary goal is to enable sufficiently accurate... Read More about Euclid Preparation. XIV. The Complete Calibration of the Color-Redshift Relation (C3R2) Survey: Data Release 3.

Euclid : Effects of sample covariance on the number counts of galaxy clusters (2021)
Journal Article
Fumagalli, A., Saro, A., Borgani, S., Castro, T., Costanzi, M., Monaco, P., …Vassallo, T. (2021). Euclid : Effects of sample covariance on the number counts of galaxy clusters. Astronomy & Astrophysics, 652, Article A21. https://doi.org/10.1051/0004-6361/202140592

Aims. We investigate the contribution of shot-noise and sample variance to uncertainties in the cosmological parameter constraints inferred from cluster number counts, in the context of the Euclid survey. Methods. By analysing 1000 Euclid-like light... Read More about Euclid : Effects of sample covariance on the number counts of galaxy clusters.

Assessing the sources of reionization: a spectroscopic case study of a 30× lensed galaxy at z ∼ 5 with Lyα, C IV, Mg II, and [Ne III] (2021)
Journal Article
Witstok, J., Smit, R., Maiolino, R., Curti, M., Laporte, N., Massey, R., …Swinbank, M. (2021). Assessing the sources of reionization: a spectroscopic case study of a 30× lensed galaxy at z ∼ 5 with Lyα, C IV, Mg II, and [Ne III]. Monthly Notices of the Royal Astronomical Society, 508(2), 1686-1700. https://doi.org/10.1093/mnras/stab2591

We present a detailed spectroscopic analysis of a galaxy at z ≃ 4.88 that is, by chance, magnified ∼30× by gravitational lensing. Only three sources at z ≳ 5 are known with such high magnification. This particular source has been shown to exhibit wid... Read More about Assessing the sources of reionization: a spectroscopic case study of a 30× lensed galaxy at z ∼ 5 with Lyα, C IV, Mg II, and [Ne III].

Euclid preparation: IX. EuclidEmulator2 - power spectrum emulation with massive neutrinos and self-consistent dark energy perturbations (2021)
Journal Article
Collaboration, E., Knabenhans, M., Stadel, J., Potter, D., Dakin, J., Hannestad, S., …Zucca, E. (2021). Euclid preparation: IX. EuclidEmulator2 - power spectrum emulation with massive neutrinos and self-consistent dark energy perturbations. Monthly Notices of the Royal Astronomical Society, 505(2), 2840-2869. https://doi.org/10.1093/mnras/stab1366

We present a new, updated version of the EuclidEmulator (called EuclidEmulator2), a fast and accurate predictor for the nonlinear correction of the matter power spectrum. 2 per cent level accurate emulation is now supported in the eight-dimensional p... Read More about Euclid preparation: IX. EuclidEmulator2 - power spectrum emulation with massive neutrinos and self-consistent dark energy perturbations.

PyAutoLens: Open-Source Strong Gravitational Lensing (2021)
Journal Article
Nightingale, J., Hayes, R., Kelly, A., Amvrosiadis, A., Etherington, A., He, Q., …Robertson, A. (2021). PyAutoLens: Open-Source Strong Gravitational Lensing. The Journal of Open Source Software, 6(58), Article 2825. https://doi.org/10.21105/joss.02825

Strong gravitational lensing, which can make a background source galaxy appears multiple times due to its light rays being deflected by the mass of one or more foreground lens galaxies, provides astronomers with a powerful tool to study dark matter,... Read More about PyAutoLens: Open-Source Strong Gravitational Lensing.