9 documents found, page 1 of 1
Dark Energy Survey year 3 results: covariance modelling and its impact on param...
Friedrich, O.; Andrade-Oliveira, F. [UNESP]; Camacho, H. [UNESP]; Alves, O. [UNESP]; Rosenfeld, R. [UNESP]; Sanchez, J.; Fang, X.; Eifler, T. F.Made available in DSpace on 2022-04-29T08:36:40Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-12-01; We describe and test the fiducial covariance matrix model for the combined two-point function analysis of the Dark Energy Survey Year 3 (DES-Y3) data set. Using a variety of new ansatzes for covariance modelling and testing, we validate the assumptions and approximations of this model. These include the...
Dark Energy Survey Year 3 results: Galaxy-halo connection from galaxy-galaxy le...
Zacharegkas, G.; Chang, C.; Prat, J.; Pandey, S.; Ferrero, I.; Blazek, J.; Jain, B.; Crocce, M.; Derose, J.; Palmese, A.; Seitz, S.; Sheldon, E.Made available in DSpace on 2022-04-29T08:37:28Z (GMT). No. of bitstreams: 0 Previous issue date: 2022-01-01; Galaxy-galaxy lensing is a powerful probe of the connection between galaxies and their host dark matter haloes, which is important both for galaxy evolution and cosmology. We extend the measurement and modelling of the galaxy-galaxy lensing signal in the recent Dark Energy Survey Year 3 cosmology analys...
Dark Energy Survey Year 3 results: A 2.7% measurement of baryon acoustic oscill...
Abbott, T. M.C.; Aguena, M.; Allam, S.; Amon, A.; Andrade-Oliveira, F. [UNESP]; Asorey, J.; Avila, S.; Bernstein, G. M.; Bertin, E.; Brandao-Souza, A.Made available in DSpace on 2022-04-29T08:40:00Z (GMT). No. of bitstreams: 0 Previous issue date: 2022-02-15; We present angular diameter measurements obtained by measuring the position of baryon acoustic oscillations (BAO) in an optimized sample of galaxies from the first three years of Dark Energy Survey data (DES Y3). The sample consists of 7 million galaxies distributed over a footprint of 4100 deg2 with 0....
The Dark Energy Survey Bright Arcs Survey: Candidate Strongly Lensed Galaxy Sys...
O'Donnell, J. H.; Wilkinson, R. D.; Diehl, H. T.; Aros-Bunster, C.; Bechtol, K.; Birrer, S.; Buckley-Geer, E. J.; Carnero Rosell, A.; Carrasco Kind, M.Made available in DSpace on 2022-04-29T08:40:54Z (GMT). No. of bitstreams: 0 Previous issue date: 2022-03-01; We report the combined results of eight searches for strong gravitational lens systems in the full 5000 square degrees of Dark Energy Survey (DES) observations. The observations accumulated by the end of the third observing season fully covered the DES footprint in five filters (grizY), with an i-band l...
The Evolution of AGN Activity in Brightest Cluster Galaxies
Somboonpanyakul, T.; McDonald, M.; Noble, A.; Aguena, M.; Allam, S.; Amon, A.; Andrade-Oliveira, F. [UNESP]; Bacon, D.; Bayliss, M. B.; Bertin, E.Made available in DSpace on 2022-04-29T08:41:07Z (GMT). No. of bitstreams: 0 Previous issue date: 2022-04-01; We present the results of an analysis of Wide-field Infrared Survey Explorer (WISE) observations of the full 2500 deg2 South Pole Telescope (SPT)-Sunyaev-Zel'dovich cluster sample. We describe a process for identifying active galactic nuclei (AGN) in brightest cluster galaxies (BCGs) based on WISE mid-I...
DES Y1 results: Splitting growth and geometry to test ΛcDM
Muir, J.; Baxter, E.; Miranda, V.; Doux, C.; Ferté, A.; Leonard, C. D.; Huterer, D.; Jain, B.; Lemos, P.; Raveri, M.; Nadathur, S.; Campos, A. [UNESP]Made available in DSpace on 2022-04-29T08:29:09Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-01-21; We analyze Dark Energy Survey (DES) data to constrain a cosmological model where a subset of parameters - focusing on ωm - are split into versions associated with structure growth (e.g., ωmgrow) and expansion history (e.g., ωmgeo). Once the parameters have been specified for the ΛCDM cosmological model,...
Constraints on dark matter to dark radiation conversion in the late universe wi...
Chen, A.; Huterer, D.; Lee, S.; Ferté, A.; Weaverdyck, N.; Alves, O. [UNESP]; Leonard, C. D.; Maccrann, N.; Raveri, M.; Porredon, A.; Di Valentino, E.Made available in DSpace on 2022-04-29T08:29:42Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-06-15; We study a phenomenological class of models where dark matter converts to dark radiation in the low redshift epoch. This class of models, dubbed DMDR, characterizes the evolution of comoving dark-matter density with two extra parameters, and may be able to help alleviate the observed discrepancies betwe...
DES Y1 results: Splitting growth and geometry to test Lambda CDM
Muir, J.; Baxter, E.; Miranda, V; Doux, C.; Ferte, A.; Leonard, C. D.; Huterer, D.; Jain, B.; Lemos, P.; Raveri, M.; Nadathur, S.; Campos, A. [UNESP]Made available in DSpace on 2021-06-25T12:34:14Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-01-21; Porat Fellowship at Stanford University; Rackham Graduate School; National Energy Research Scientific Computing Center (NERSC), a U.S. Department of Energy Office of Science User Facility; Stanford University; Stanford Research Computing Center; U.S. Department of Energy; U.S. National Science Foundatio...
Consistency of cosmic shear analyses in harmonic and real space
Doux, C.; Chang, C.; Jain, B.; Blazek, J.; Camacho, H. [UNESP]; Fang, X.; Gatti, M.; Krause, E.; MacCrann, N.; Samuroff, S.; Secco, L. F.; Troxel, M. A.Made available in DSpace on 2021-06-25T15:04:46Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-05-01; U.S. Department of Energy; U.S. National Science Foundation; Ministry of Science and Education of Spain; Science and Technology Facilities Council of the United Kingdom; National Center for Supercomputing Applications at the University of Illinois at Urbana-Champaign; Kavli Institute for Cosmological Ph...