Zobrazeno 11 - 20
of 191
pro vyhledávání: '"Cai, Yan-Chuan"'
Autor:
Hang, Qianjun, Peacock, John A., Alam, Shadab, Cai, Yan-Chuan, Kraljic, Katarina, van Daalen, Marcel, Bilicki, M., Holwerda, B. W., Loveday, J.
We have studied the galaxy-group cross-correlations in redshift space for the Galaxy And Mass Assembly (GAMA) Survey. We use a set of mock GAMA galaxy and group catalogues to develop and test a novel 'halo streaming' model for redshift-space distorti
Externí odkaz:
http://arxiv.org/abs/2206.05065
The relation between the integrated thermal Sunyaev-Zeldovich (tSZ) $y$-decrement versus halo mass ($Y$--$M$) can potentially constrain galaxy formation models, if theoretical and observational systematics can be properly assessed. We investigate the
Externí odkaz:
http://arxiv.org/abs/2202.11430
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
FORGE -- the f(R) gravity cosmic emulator project I: Introduction and matter power spectrum emulator
We present a large suite of cosmological simulations, the FORGE (F-of-R Gravity Emulator) simulation suite, which is designed to build accurate emulators for cosmological observables in galaxy clustering, weak gravitational lensing and galaxy cluster
Externí odkaz:
http://arxiv.org/abs/2109.04984
Publikováno v:
MNRAS, 510, 3589 (2022)
General relativity predicts that the rotational momentum flux of matter twists the spacetime via a vector gravitomagnetic (frame-dragging) field, which remains undetected in cosmology. This vector field induces an additional gravitational lensing eff
Externí odkaz:
http://arxiv.org/abs/2109.02632
The imprints of large-scale structures on the Cosmic Microwave Background can be studied via the CMB lensing and Integrated Sachs-Wolfe (ISW) signals. In particular, the stacked ISW signal around supervoids has been claimed in several works to be ano
Externí odkaz:
http://arxiv.org/abs/2105.11936
Accurate modelling of redshift-space distortions (RSD) is challenging in the non-linear regime for two-point statistics e.g. the two-point correlation function (2PCF). We take a different perspective to split the galaxy density field according to the
Externí odkaz:
http://arxiv.org/abs/2101.09854
Autor:
Alam, Shadab, Arnold, Christian, Aviles, Alejandro, Bean, Rachel, Cai, Yan-Chuan, Cautun, Marius, Cervantes-Cota, Jorge L., Cuesta-Lazaro, Carolina, Devi, N. Chandrachani, Eggemeier, Alexander, Fromenteau, Sebastien, Gonzalez-Morales, Alma X., Halenka, Vitali, He, Jian-hua, Hellwing, Wojciech A., Hernandez-Aguayo, Cesar, Ishak, Mustapha, Koyama, Kazuya, Li, Baojiu, de la Macorra, Axel, Rizo, Jennifer Menesses, Miller, Christopher, Mueller, Eva-Maria, Niz, Gustavo, Ntelis, Pierros, Otero, Matias Rodriguez, Sabiu, Cristiano G., Slepian, Zachary, Stark, Alejo, Valenzuela, Octavio, Valogiannis, Georgios, Vargas-Magana, Mariana, Winther, Hans A., Zarrouk, Pauline, Zhao, Gong-Bo, Zheng, Yi
Shortly after its discovery, General Relativity (GR) was applied to predict the behavior of our Universe on the largest scales, and later became the foundation of modern cosmology. Its validity has been verified on a range of scales and environments
Externí odkaz:
http://arxiv.org/abs/2011.05771
Autor:
Davies, Christopher T., Cautun, Marius, Giblin, Benjamin, Li, Baojiu, Harnois-Déraps, Joachim, Cai, Yan-Chuan
Upcoming surveys such as \LSST{} and \Euclid{} will significantly improve the power of weak lensing as a cosmological probe. To maximise the information that can be extracted from these surveys, it is important to explore novel statistics that comple
Externí odkaz:
http://arxiv.org/abs/2010.11954
We use data from the DESI Legacy Survey imaging to probe the galaxy density field in tomographic slices covering the redshift range $0
Externí odkaz:
http://arxiv.org/abs/2010.00466