Outputs (5)

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.

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.

Pilot-WINGS: An extended MUSE view of the structure of Abell 370 (2022)
Journal Article
Lagattuta, D. J., Richard, J., Bauer, F. E., Cerny, C., Claeyssens, A., Guaita, L., Jauzac, M., Jeanneau, A., Koekemoer, A. M., Mahler, G., Prieto Lyon, G., Acebron, A., Meneghetti, M., Niemiec, A., Zitrin, A., Bianconi, M., Connor, T., Cen, R., Edge, A., Faisst, A. L., …Weaver, J. R. (2022). Pilot-WINGS: An extended MUSE view of the structure of Abell 370. Monthly Notices of the Royal Astronomical Society, 514(1), 497-517. https://doi.org/10.1093/mnras/stac418

We investigate the strong-lensing cluster Abell 370 (A370) using a wide Integral Field Unit (IFU) spectroscopic mosaic from the Multi-Unit Spectroscopic Explorer (MUSE). IFU spectroscopy provides significant insight into the structure and mass conten... Read More about Pilot-WINGS: An extended MUSE view of the structure of Abell 370.

Core Mass Estimates in Strong Lensing Galaxy Clusters: A Comparison between Masses Obtained from Detailed Lens Models, Single-halo Lens Models, and Einstein Radii (2021)
Journal Article
Remolina González, J., Sharon, K., Mahler, G., Fox, C., Garcia Diaz, C., Napier, K., Bleem, L., Gladders, M., Li, N., & Niemiec, A. (2021). Core Mass Estimates in Strong Lensing Galaxy Clusters: A Comparison between Masses Obtained from Detailed Lens Models, Single-halo Lens Models, and Einstein Radii. Astrophysical Journal, 920(2), Article 98. https://doi.org/10.3847/1538-4357/ac16d8

The core mass of galaxy clusters is both an important anchor of the radial mass distribution profile and a probe of structure formation. With thousands of strong lensing galaxy clusters being discovered by current and upcoming surveys, timely, effici... Read More about Core Mass Estimates in Strong Lensing Galaxy Clusters: A Comparison between Masses Obtained from Detailed Lens Models, Single-halo Lens Models, and Einstein Radii.

Efficient Mass Estimate at the Core of Strong Lensing Galaxy Clusters Using the Einstein Radius (2020)
Journal Article
González, J. R., Sharon, K., Reed, B., Li, N., Mahler, G., Bleem, L., Gladders, M., Niemiec, A., Acebron, A., & Child, H. (2020). Efficient Mass Estimate at the Core of Strong Lensing Galaxy Clusters Using the Einstein Radius. Astrophysical Journal, 902(1), Article 44. https://doi.org/10.3847/1538-4357/abb2a1

In the era of large surveys, yielding thousands of galaxy clusters, efficient mass proxies at all scales are necessary in order to fully utilize clusters as cosmological probes. At the cores of strong lensing clusters, the Einstein radius can be turn... Read More about Efficient Mass Estimate at the Core of Strong Lensing Galaxy Clusters Using the Einstein Radius.