All Outputs (84)

Euclid: I. Overview of the Euclid mission (2025)
Journal Article
Euclid Collaboration, Mellier, Y., Abdurro’uf, Acevedo Barroso, J. A., Achúcarro, A., Adamek, J., Adam, R., Addison, G. E., Aghanim, N., Aguena, M., Ajani, V., Akrami, Y., Al-Bahlawan, A., Alavi, A., Albuquerque, I. S., Alestas, G., Alguero, G., Allaoui, A., Allen, S. W., Allevato, V., …Zumalacarregui, M. (2025). Euclid: I. Overview of the Euclid mission. Astronomy & Astrophysics, 697, Article A1. https://doi.org/10.1051/0004-6361/202450810

The current standard model of cosmology successfully describes a variety of measurements, but the nature of its main ingredients,
dark matter and dark energy, remains unknown. Euclid is a medium-class mission in the Cosmic Vision 2015–2025 programme... Read More about Euclid: I. Overview of the Euclid mission.

Mass and light in galaxy clusters: The case of Abell 370 (2024)
Journal Article
Limousin, M., Beauchesne, B., Niemiec, A., Diego, J. M., Jauzac, M., Koekemoer, A., Sharon, K., Acebron, A., Lagattuta, D., Mahler, G., Williams, L. L. R., Richard, J., Jullo, E., Furtak, L. J., Faisst, A. L., Frye, B. L., Hibon, P., Natarajan, P., & Rich, M. (2025). Mass and light in galaxy clusters: The case of Abell 370. Astronomy & Astrophysics, 693, Article A33. https://doi.org/10.1051/0004-6361/202451969

In the cold dark matter (CDM) paradigm, an association between the hypothetic dark matter (DM) and its stellar counterpart is expected. However, parametric strong-lensing studies of galaxy clusters often display misleading features: DM components on... Read More about Mass and light in galaxy clusters: The case of Abell 370.

BUFFALO wild wings: a high-precision free-form lens model of MACSJ0416 with constraints on dark matter from substructure and highly magnified arcs (2024)
Journal Article
Perera, D., Williams, L. L., Liesenborgs, J., Kelly, P. L., Taft, S. H., Li, S. K., Jauzac, M., Diego, J. M., Natarajan, P., Steinhardt, C. L., Faisst, A. L., Rich, R. M., & Limousin, M. (2025). BUFFALO wild wings: a high-precision free-form lens model of MACSJ0416 with constraints on dark matter from substructure and highly magnified arcs. Monthly Notices of the Royal Astronomical Society, 536(3), 2690-2713. https://doi.org/10.1093/mnras/stae2753

We present new free-form and hybrid mass reconstructions of the galaxy cluster lens MACS J0416.1-2403 at z = 0.396 using the lens inversion method GRALE. The reconstructions use 237 spectroscopically confirmed multiple images from Bergamini et al. (2... Read More about BUFFALO wild wings: a high-precision free-form lens model of MACSJ0416 with constraints on dark matter from substructure and highly magnified arcs.

ALMA Lensing Cluster Survey: Deep 1.2 mm Number Counts and Infrared Luminosity Functions at z ≃ 1–8 (2024)
Journal Article
Fujimoto, S., Kohno, K., Ouchi, M., Oguri, M., Kokorev, V., Brammer, G., Sun, F., González-López, J., Bauer, F. E., Caminha, G. B., Hatsukade, B., Richard, J., Smail, I., Tsujita, A., Ueda, Y., Uematsu, R., Zitrin, A., Coe, D., Kneib, J.-P., Postman, M., …Wang, W.-H. (2024). ALMA Lensing Cluster Survey: Deep 1.2 mm Number Counts and Infrared Luminosity Functions at z ≃ 1–8. Astrophysical Journal Supplement, 275(2), Article 36. https://doi.org/10.3847/1538-4365/ad5ae2

We present a statistical study of 180 dust continuum sources identified in 33 massive cluster fields by the Atacama Large Millimeter/submillimeter Array Lensing Cluster Survey (ALCS) over a total of 133 arcmin2 area, homogeneously observed at 1.2 mm.... Read More about ALMA Lensing Cluster Survey: Deep 1.2 mm Number Counts and Infrared Luminosity Functions at z ≃ 1–8.

The KALEIDOSCOPE survey : A new strong and weak gravitational lensing view of the massive galaxy cluster MACS J1423.8+2404 (2024)
Journal Article
Patel, N. R., Jauzac, M., Niemiec, A., Lagattuta, D., Mahler, G., Beauchesne, B., Edge, A., Ebeling, H., & Limousin, M. (2024). The KALEIDOSCOPE survey : A new strong and weak gravitational lensing view of the massive galaxy cluster MACS J1423.8+2404. Monthly Notices of the Royal Astronomical Society, 533(4), 4500-4514. https://doi.org/10.1093/mnras/stae2069

We present a combined strong and weak gravitational-lensing analysis of the massive galaxy cluster MACS J1423.8+2404 (z = 0.545, MACS J1423 hereafter), one of the most dynamically relaxed and massive cool-core clusters discovered in the MAssive Clust... Read More about The KALEIDOSCOPE survey : A new strong and weak gravitational lensing view of the massive galaxy cluster MACS J1423.8+2404.

A complex node of the cosmic web associated with the massive galaxy cluster MACS J0600.1-2008 (2024)
Journal Article
Furtak, L. J., Zitrin, A., Richard, J., Eckert, D., Sayers, J., Ebeling, H., Fujimoto, S., Laporte, N., Lagattuta, D., Limousin, M., Mahler, G., Meena, A. K., Andrade-Santos, F., Frye, B. L., Jauzac, M., Koekemoer, A. M., Kohno, K., Espada, D., Lu, H., Massey, R., & Niemiec, A. (2024). A complex node of the cosmic web associated with the massive galaxy cluster MACS J0600.1-2008. Monthly Notices of the Royal Astronomical Society, 533(2), 2242-2261. https://doi.org/10.1093/mnras/stae1943

The Galaxy–Galaxy Strong Lensing Cross Section and the Internal Distribution of Matter in ΛCDM Substructure (2024)
Journal Article
Tokayer, Y. M., Dutra, I., Natarajan, P., Mahler, G., Jauzac, M., & Meneghetti, M. (2024). The Galaxy–Galaxy Strong Lensing Cross Section and the Internal Distribution of Matter in ΛCDM Substructure. The Astrophysical Journal, 970(2), Article 143. https://doi.org/10.3847/1538-4357/ad51fd

Strong gravitational lensing offers a powerful probe of the detailed distribution of matter in lenses, while magnifying and bringing faint background sources into view. Observed strong lensing by massive galaxy clusters, which are often in complex dy... Read More about The Galaxy–Galaxy Strong Lensing Cross Section and the Internal Distribution of Matter in ΛCDM Substructure.

SuperBIT Superpressure Flight Instrument Overview and Performance: Near-diffraction-limited Astronomical Imaging from the Stratosphere (2024)
Journal Article
Gill, A. S., Benton, S. J., Damaren, C. J., Everett, S. W., Fraisse, A. A., Hartley, J. W., Harvey, D., Holder, B., Huff, E. M., Jones, W. C., Lagattuta, D., Leung, J. S.-Y., Jauzac, M., Li, L., Luu, T. V. T., Massey, R., McCleary, J. E., Nagy, J. M., Netterfield, C. B., Paracha, E., …Vitorelli, A. Z. (2024). SuperBIT Superpressure Flight Instrument Overview and Performance: Near-diffraction-limited Astronomical Imaging from the Stratosphere. Astronomical Journal, 168(2), Article 85. https://doi.org/10.3847/1538-3881/ad5840

SuperBIT was a 0.5 m near-UV to near-infrared wide-field telescope that launched on a NASA superpressure balloon into the stratosphere from New Zealand for a 45-night flight. SuperBIT acquired multiband images of galaxy clusters to study the properti... Read More about SuperBIT Superpressure Flight Instrument Overview and Performance: Near-diffraction-limited Astronomical Imaging from the Stratosphere.

The Blue Multi Unit Spectroscopic Explorer (BlueMUSE) on the VLT: science drivers and overview of instrument design (2024)
Presentation / Conference Contribution
Richard, J., Giroud, R., Laurent, F., Krajnovic, D., Jeanneau, A., Bacon, R., Abreu, M., Adamo, A., Araujo, R., Bouché, N., Brinchmann, J., Cai, Z., Castro Rodriguez, N., Calcines, A., Chapuis, D., Claeyssens, A., Cortese, L., Daddi, E., Davison, C., Goodwin, M., …Zheng, J. (2024, June). The Blue Multi Unit Spectroscopic Explorer (BlueMUSE) on the VLT: science drivers and overview of instrument design. Presented at Ground-based and Airborne Instrumentation for Astronomy X, Yokohama, Japan

Self-consistent Combined HST, K -band, and Spitzer Photometric Catalogs of the BUFFALO Survey Fields (2024)
Journal Article
Pagul, A., Sánchez, F. J., Davidzon, I., Koekemoer, A. M., Mobasher, B., Jauzac, M., Steinhardt, C. L., Atek, H., Cen, R., Chemerynska, I., Furtak, L. J., Lagattuta, D. J., Mahler, G., Montes, M., Nonino, M., Sharon, K., & Weaver, J. R. (2024). Self-consistent Combined HST, K -band, and Spitzer Photometric Catalogs of the BUFFALO Survey Fields. Astrophysical Journal Supplement, 273(1), Article 10. https://doi.org/10.3847/1538-4365/ad40a1

This article presents new astronomical source catalogs using data from the BUFFALO Survey. These catalogs contain detailed information for over 100,000 astronomical sources in the six BUFFALO clusters: A370, A2744, AS1063, MACS 0416, MACS 0717, and M... Read More about Self-consistent Combined HST, K -band, and Spitzer Photometric Catalogs of the BUFFALO Survey Fields.

Strong gravitational lensing’s ‘external shear’ is not shear (2024)
Journal Article
Etherington, A., Nightingale, J., Massey, R., Tam, S.-I., Cao, X., Niemiec, A., He, Q., Robertson, A., Li, R., Amvrosiadis, A., Cole, S., Diego, J., Frenk, C., Frye, B., Harvey, D., Jauzac, M., Koekemoer, A., Lagattuta, D., Lange, S., Limousin, M., …Steinhardt, C. (2024). Strong gravitational lensing’s ‘external shear’ is not shear. Monthly Notices of the Royal Astronomical Society, 531(3), 3684-3697. https://doi.org/10.1093/mnras/stae1375

The distribution of mass in galaxy-scale strong gravitational lenses is often modelled as an elliptical power-law plus ‘external shear’, which notionally accounts for neighbouring galaxies and cosmic shear along our line of sight. A small amount of e... Read More about Strong gravitational lensing’s ‘external shear’ is not shear.

BUFFALO/Flashlights: Constraints on the abundance of lensed supergiant stars in the Spock galaxy at redshift 1 (2024)
Journal Article
Diego, J. M., Li, S. K., Meena, A. K., Niemiec, A., Acebron, A., Jauzac, M., …Pascale, M. (2024). BUFFALO/Flashlights: Constraints on the abundance of lensed supergiant stars in the Spock galaxy at redshift 1. Astronomy & Astrophysics, 681, Article A124. https://doi.org/10.1051/0004-6361/202346761

In this work, we present a constraint on the abundance of supergiant (SG) stars at redshift z ≈ 1, based on recent observations of a
strongly lensed arc at this redshift. First we derived a free-form model of MACS J0416.1-2403 using data from the Be... Read More about BUFFALO/Flashlights: Constraints on the abundance of lensed supergiant stars in the Spock galaxy at redshift 1.

A full reconstruction of two galaxy clusters intra-cluster medium with strong gravitational lensing (2024)
Journal Article
Allingham, J. F. V., Bœhm, C., Eckert, D., Jauzac, M., Lagattuta, D., Mahler, G., …Ettori, S. (2024). A full reconstruction of two galaxy clusters intra-cluster medium with strong gravitational lensing. Monthly Notices of the Royal Astronomical Society, 528(2), 1711-1736. https://doi.org/10.1093/mnras/stae107

Whilst X-rays and Sunyaev–Zel’dovich observations allow to study the properties of the intra-cluster medium (ICM) of galaxy clusters, their gravitational potential may be constrained using strong gravitational lensing. Although being physically relat... Read More about A full reconstruction of two galaxy clusters intra-cluster medium with strong gravitational lensing.

Exploring the correlation between dark matter, intracluster light, and globular cluster distribution in SMACS0723 (2023)
Journal Article
Diego, J. M., Pascale, M., Frye, B., Zitrin, A., Broadhurst, T., Mahler, G., …Montes, M. (2023). Exploring the correlation between dark matter, intracluster light, and globular cluster distribution in SMACS0723. Astronomy & Astrophysics, 679, Article A159. https://doi.org/10.1051/0004-6361/202345868

We present a free-form model of SMACS0723, the first cluster observed with JWST. This model does not make any strong assumptions on the distribution of mass (mostly made up of dark matter) in the cluster and we use it to study the possible correlatio... Read More about Exploring the correlation between dark matter, intracluster light, and globular cluster distribution in SMACS0723.

Data Downloaded via Parachute from a NASA Super-Pressure Balloon (2023)
Journal Article
Sirks, E. L., Massey, R., Gill, A. S., Anderson, J., Benton, S. J., Brown, A. M., Clark, P., English, J., Everett, S. W., Fraisse, A. A., Franco, H., Hartley, J. W., Harvey, D., Holder, B., Hunter, A., Huff, E. M., Hynous, A., Jauzac, M., Jones, W. C., Joyce, N., …Vassilakis, G. N. (2023). Data Downloaded via Parachute from a NASA Super-Pressure Balloon. Aerospace, 10(11), Article 960. https://doi.org/10.3390/aerospace10110960

In April 2023, the superBIT telescope was lifted to the Earth’s stratosphere by a helium-filled super-pressure balloon to acquire astronomical imaging from above (99.5% of) the Earth’s atmosphere. It was launched from New Zealand and then, for 40 day... Read More about Data Downloaded via Parachute from a NASA Super-Pressure Balloon.

A new step forward in realistic cluster lens mass modelling: analysis of Hubble Frontier Field Cluster Abell S1063 from joint lensing, X-ray, and galaxy kinematics data (2023)
Journal Article
Beauchesne, B., Clément, B., Hibon, P., Limousin, M., Eckert, D., Kneib, J., …Sánchez, J. (2024). A new step forward in realistic cluster lens mass modelling: analysis of Hubble Frontier Field Cluster Abell S1063 from joint lensing, X-ray, and galaxy kinematics data. Monthly Notices of the Royal Astronomical Society, 527(2), 3246–3275. https://doi.org/10.1093/mnras/stad3308

We present a new method to simultaneously and self-consistently model the mass distribution of galaxy clusters that combines constraints from strong lensing features, X-ray emission, and galaxy kinematics measurements. We are able to successfully dec... Read More about A new step forward in realistic cluster lens mass modelling: analysis of Hubble Frontier Field Cluster Abell S1063 from joint lensing, X-ray, and galaxy kinematics data.

Lensing in the Blue. II. Estimating the Sensitivity of Stratospheric Balloons to Weak Gravitational Lensing (2023)
Journal Article
McCleary, J. E., Everett, S. W., Shaaban, M. M., Gill, A. S., Vassilakis, G. N., Huff, E. M., Massey, R. J., Benton, S. J., Brown, A. M., Clark, P., Holder, B., Fraisse, A. A., Jauzac, M., Jones, W. C., Lagattuta, D., Leung, J. S.-Y., Li, L., T. Luu, T. V., Nagy, J. M., Netterfield, C. B., …Tam, S. I. (2023). Lensing in the Blue. II. Estimating the Sensitivity of Stratospheric Balloons to Weak Gravitational Lensing. Astronomical Journal, 166(3), https://doi.org/10.3847/1538-3881/ace7ca

The Superpressure Balloon-borne Imaging Telescope (SuperBIT) is a diffraction-limited, wide-field, 0.5 m, near-infrared to near-ultraviolet observatory designed to exploit the stratosphere's space-like conditions. SuperBIT's 2023 science flight will... Read More about Lensing in the Blue. II. Estimating the Sensitivity of Stratospheric Balloons to Weak Gravitational Lensing.

The Magnificent Five Images of Supernova Refsdal: Time Delay and Magnification Measurements (2023)
Journal Article
Kelly, P. L., Rodney, S., Treu, T., Birrer, S., Bonvin, V., Dessart, L., Foley, R. J., Filippenko, A. V., Gilman, D., Jha, S., Hjorth, J., Mandel, K., Millon, M., Pierel, J., Thorp, S., Zitrin, A., Broadhurst, T., Chen, W., Diego, J. M., Dressler, A., …Wambsganss, J. (2023). The Magnificent Five Images of Supernova Refsdal: Time Delay and Magnification Measurements. Astrophysical Journal, 948(2), Article 93. https://doi.org/10.3847/1538-4357/ac4ccb

In late 2014, four images of supernova (SN) "Refsdal," the first known example of a strongly lensed SN with multiple resolved images, were detected in the MACS J1149 galaxy-cluster field. Following the images' discovery, the SN was predicted to reapp... Read More about The Magnificent Five Images of Supernova Refsdal: Time Delay and Magnification Measurements.

RXJ0437+00: constraining dark matter with exotic gravitational lenses (2023)
Journal Article
Lagattuta, D. J., Richard, J., Ebeling, H., Basto, Q., Cerny, C., Edge, A., Jauzac, M., Mahler, G., & Massey, R. (2023). RXJ0437+00: constraining dark matter with exotic gravitational lenses. Monthly Notices of the Royal Astronomical Society, 522(1), 1091-1107. https://doi.org/10.1093/mnras/stad803

We present the first strong-gravitational-lensing analysis of the galaxy cluster RX J0437.1+0043 (RXJ0437; z = 0.285). Newly obtained, deep MUSE observations, Keck/MOSFIRE near-infrared spectroscopy, and Hubble Space Telescope SNAPshot imaging reveal... Read More about RXJ0437+00: constraining dark matter with exotic gravitational lenses.

Joint HST, VLT/MUSE, and XMM−Newton observations to constrain the mass distribution of the two strong lensing galaxy clusters: MACS J0242.5-2132 and MACS J0949.8+1708 (2023)
Journal Article
Allingham, J. F. V., Jauzac, M., Lagattuta, D. J., Mahler, G., Bœhm, C., Lewis, G. F., …Ettori, S. (2023). Joint HST, VLT/MUSE, and XMM−Newton observations to constrain the mass distribution of the two strong lensing galaxy clusters: MACS J0242.5-2132 and MACS J0949.8+1708. Monthly Notices of the Royal Astronomical Society, 522(1), 1118-1137. https://doi.org/10.1093/mnras/stad917