Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Galan, Aymeric"'
Autor:
Wong, Kenneth C., Dux, Frédéric, Shajib, Anowar J., Suyu, Sherry H., Millon, Martin, Mozumdar, Pritom, Wells, Patrick R., Agnello, Adriano, Birrer, Simon, Buckley-Geer, Elizabeth J., Courbin, Frédéric, Fassnacht, Christopher D., Frieman, Joshua, Galan, Aymeric, Lin, Huan, Marshall, Philip J., Poh, Jason, Schuldt, Stefan, Sluse, Dominique, Treu, Tommaso
Publikováno v:
A&A 689, A168 (2024)
Time-delay cosmography is a powerful technique to constrain cosmological parameters, particularly the Hubble constant ($H_{0}$). The TDCOSMO collaboration is performing an ongoing analysis of lensed quasars to constrain cosmology using this method. I
Externí odkaz:
http://arxiv.org/abs/2406.02683
Nine lensed quasars and quasar pairs discovered through spatially-extended variability in Pan-STARRS
Autor:
Dux, Frédéric, Lemon, Cameron, Courbin, Frédéric, Neira, Favio, Anguita, Timo, Galan, Aymeric, Kim, Sam, Hempel, Maren, Hempel, Angela, Lachaume, Régis
We present the proof-of-concept of a method to find strongly lensed quasars using their spatially-extended photometric variability through difference imaging in cadenced imaging survey data. We apply the method to Pan-STARRS, starting with an initial
Externí odkaz:
http://arxiv.org/abs/2307.13729
Autor:
Gomer, Matthew R., Ertl, Sebastian, Biggio, Luca, Wang, Han, Galan, Aymeric, Van de Vyvere, Lyne, Sluse, Dominique, Vernardos, Georgios, Suyu, Sherry H.
Strong gravitational lensing is a powerful tool to provide constraints on galaxy mass distributions and cosmological parameters, such as the Hubble constant, $H_0$. Nevertheless, inference of such parameters from images of lensing systems is not triv
Externí odkaz:
http://arxiv.org/abs/2307.10381
Strong gravitational lensing by AGNs as a probe of the quasar-host relations in the distant Universe
Autor:
Millon, Martin, Courbin, Frédéric, Galan, Aymeric, Sluse, Dominique, Ding, Xuheng, Tewes, Malte, Djorgovski, S. G.
Publikováno v:
Nature Astronomy, Volume 7, p. 959-966, August 2023
The tight correlations found between masses of supermassive black holes (SMBHs) and the luminosities, total stellar masses, and velocity dispersions of their host galaxies are often interpreted as a sign of their co-evolution. Studying these correlat
Externí odkaz:
http://arxiv.org/abs/2306.01042
Strong gravitational lensing is a unique observational tool for studying the dark and luminous mass distribution both within and between galaxies. Given the presence of substructures, current strong lensing observations demand more complex mass model
Externí odkaz:
http://arxiv.org/abs/2210.09169
Publikováno v:
A&A 668, A155 (2022)
Modeling the mass distribution of galaxy-scale strong gravitational lenses is a task of increasing difficulty. The high-resolution and depth of imaging data now available render simple analytical forms ineffective at capturing lens structures spannin
Externí odkaz:
http://arxiv.org/abs/2207.05763
Autor:
Tolley, Emma, Korber, Damien, Galan, Aymeric, Peel, Austin, Sargent, Mark T., Kneib, Jean-Paul, Courbin, Frederic, Starck, Jean-Luc
Future deep HI surveys will be essential for understanding the nature of galaxies and the content of the Universe. However, the large volume of these data will require distributed and automated processing techniques. We introduce LiSA, a set of pytho
Externí odkaz:
http://arxiv.org/abs/2204.09288
Autor:
Van de Vyvere, Lyne, Gomer, Matthew R., Sluse, Dominique, Xu, Dandan, Birrer, Simon, Galan, Aymeric, Vernardos, Georgios
Publikováno v:
A&A 659, A127 (2022)
In the context of gravitational lensing, the density profile of lensing galaxies is often considered to be perfectly elliptical. Potential angular structures are generally ignored, except to explain flux ratios anomalies. Surprisingly, the impact of
Externí odkaz:
http://arxiv.org/abs/2112.03932
Autor:
Birrer, Simon, Shajib, Anowar J., Gilman, Daniel, Galan, Aymeric, Aalbers, Jelle, Millon, Martin, Morgan, Robert, Pagano, Giulia, Park, Ji Won, Teodori, Luca, Tessore, Nicolas, Ueland, Madison, Van de Vyvere, Lyne, Wagner-Carena, Sebastian, Wempe, Ewoud, Yang, Lilan, Ding, Xuheng, Schmidt, Thomas, Sluse, Dominique, Zhang, Ming, Amara, Adam
Publikováno v:
Journal of Open Source Software, 6(62), 3283 (2021)
lenstronomy is an Astropy-affiliated Python package for gravitational lensing simulations and analyses. lenstronomy was introduced by Birrer and Amara (2018) and is based on the linear basis set approach by Birrer et a. (2015). The user and developer
Externí odkaz:
http://arxiv.org/abs/2106.05976
Autor:
Ding, Xuheng, Treu, Tommaso, Birrer, Simon, Agnello, Adriano, Sluse, Dominique, Fassnacht, Chris, Auger, Matthew W., Wong, Kenneth C., Suyu, Sherry H., Morishita, Takahiro, Rusu, Cristian E., Galan, Aymeric
Publikováno v:
MNRAS, (2021), 501, 269
One of the main challenges in using high redshift active galactic nuclei to study the correlations between the mass of the supermassive Black Hole (MBH) and the properties of their active host galaxies is instrumental resolution. Strong lensing magni
Externí odkaz:
http://arxiv.org/abs/2005.13550