Zobrazeno 1 - 10
of 60
pro vyhledávání: '"Davies, Christopher T"'
Publikováno v:
A&A 690, A322 (2024)
Galaxy clusters are useful cosmological probes and interesting astrophysical laboratories. With growing cluster samples, a deeper understanding of the sample characteristics and improved control of systematics becomes more crucial. In this analysis w
Externí odkaz:
http://arxiv.org/abs/2406.14754
Autor:
Davies, Christopher T., Harnois-Déraps, Joachim, Li, Baojiu, Giblin, Benjamin, Hernández-Aguayo, César, Paillas, Enrique
It is well established that maximizing the information extracted from upcoming and ongoing stage-IV weak-lensing surveys requires higher-order summary statistics that complement the standard two-point statistics. In this work, we focus on weak-lensin
Externí odkaz:
http://arxiv.org/abs/2406.11958
Ray-tracing vs. Born approximation in full-sky weak lensing simulations of the MillenniumTNG project
Autor:
Ferlito, Fulvio, Davies, Christopher T., Springel, Volker, Reinecke, Martin, Greco, Alessandro, Delgado, Ana Maria, White, Simon D. M., Hernández-Aguayo, César, Bose, Sownak, Hernquist, Lars
Weak gravitational lensing is a powerful tool for precision tests of cosmology. As the expected deflection angles are small, predictions based on non-linear N-body simulations are commonly computed with the Born approximation. Here we examine this as
Externí odkaz:
http://arxiv.org/abs/2406.08540
Autor:
Demirbozan, Umut, Nadathur, Seshadri, Ferrero, Ismael, Fosalba, Pablo, Kovacs, Andras, Miquel, Ramon, Davies, Christopher T., Pandey, Shivam, Adamow, Monika, Bechtol, Keith, Drlica-Wagner, Alex, Gruendl, Robert, Hartley, Will, Pieres, Adriano, Ross, Ashley, Rykoff, Eli, Sheldon, Erin, Yanny, Brian, Abbott, Tim, Aguena, Michel, Allam, Sahar, Alves, Otavio, Bacon, David, Bertin, Emmanuel, Bocquet, Sebastian, Brooks, David, Rosell, Aurelio Carnero, Carretero, Jorge, Cawthon, Ross, da Costa, Luiz, Pereira, Maria Elidaiana da Silva, De Vicente, Juan, Desai, Shantanu, Doel, Peter, Everett, Spencer, Flaugher, Brenna, Friedel, Douglas, Frieman, Josh, Gatti, Marco, Gaztanaga, Enrique, Giannini, Giulia, Gutierrez, Gaston, Hinton, Samuel, Hollowood, Devon L., James, David, Jeffrey, Niall, Kuehn, Kyler, Lahav, Ofer, Lee, Sujeong, Marshall, Jennifer, Mena-Fernández, Juan, Mohr, Joe, Myles, Justin, Ogando, Ricardo, Malagón, Andrés Plazas, Roodman, Aaron, Sanchez, Eusebio, Sevilla, Ignacio, Smith, Mathew, Soares-Santos, Marcelle, Suchyta, Eric, Swanson, Molly, Tarle, Gregory, Weaverdyck, Noah, Weller, Jochen, Wiseman, Philip
$ $Low density cosmic voids gravitationally lens the cosmic microwave background (CMB), leaving a negative imprint on the CMB convergence $\kappa$. This effect provides insight into the distribution of matter within voids, and can also be used to stu
Externí odkaz:
http://arxiv.org/abs/2404.18278
Autor:
Vogt, Sophie M. L., Bocquet, Sebastian, Davies, Christopher T., Mohr, Joseph J., Schmidt, Fabian
We present forecasts for constraints on the Hu \& Sawicki $f(R)$ modified gravity model using realistic mock data representative of future cluster and weak lensing surveys. We create mock thermal Sunyaev-Zel'dovich effect selected cluster samples for
Externí odkaz:
http://arxiv.org/abs/2401.09959
Autor:
Ferlito, Fulvio, Springel, Volker, Davies, Christopher T., Hernández-Aguayo, César, Pakmor, Rüdiger, Barrera, Monica, White, Simon D. M., Delgado, Ana Maria, Hadzhiyska, Boryana, Hernquist, Lars, Kannan, Rahul, Bose, Sownak, Frenk, Carlos
We study weak gravitational lensing convergence maps produced from the MillenniumTNG (MTNG) simulations by direct projection of the mass distribution on the past backwards lightcone of a fiducial observer. We explore the lensing maps over a large dyn
Externí odkaz:
http://arxiv.org/abs/2304.12338
Autor:
Ruan, Cheng-Zong, Cuesta-Lazaro, Carolina, Eggemeier, Alexander, Li, Baojiu, Baugh, Carlton M., Arnold, Christian, Bose, Sownak, Hernández-Aguayo, César, Zarrouk, Pauline, Davies, Christopher T.
In this series of papers we present an emulator-based halo model for the non-linear clustering of galaxies in modified gravity cosmologies. In the first paper, we present emulators for the following halo properties: the halo mass function, concentrat
Externí odkaz:
http://arxiv.org/abs/2301.02970
Autor:
Harnois-Déraps, Joachim, Hernandez-Aguayo, Cesar, Cuesta-Lazaro, Carolina, Arnold, Christian, Li, Baojiu, Davies, Christopher T., Cai, Yan-Chuan
We present MGLenS, a large series of modified gravity lensing simulations tailored for cosmic shear data analyses and forecasts in which cosmological and modified gravity parameters are varied simultaneously. Based on the FORGE and BRIDGE $N$-body si
Externí odkaz:
http://arxiv.org/abs/2211.05779
Autor:
Davies, Christopher T., Cautun, Marius, Giblin, Benjamin, Li, Baojiu, Harnois-Déraps, Joachim, Cai, Yan-Chuan
Maximising the information that can be extracted from weak lensing measurements is a key goal for upcoming surveys such as LSST and Euclid. This is typically achieved through statistics that are complementary to the cosmic shear two-point correlation
Externí odkaz:
http://arxiv.org/abs/2110.10164
The generalised Proca (GP) theory is a modified gravity model in which the acceleration of the cosmic expansion rate can be explained by self interactions of a cosmological vector field. In this paper we study a particular sub-class of the GP theory,
Externí odkaz:
http://arxiv.org/abs/2011.01719