Zobrazeno 1 - 10
of 69
pro vyhledávání: '"Kirk, Donnacha"'
Publikováno v:
Phys. Rev. D 99, 083512 (2019)
We use a range of cosmological data to constrain phenomenological modifications to general relativity on cosmological scales, through modifications to the Poisson and lensing equations. We include cosmic microwave background anisotropy measurements f
Externí odkaz:
http://arxiv.org/abs/1712.01846
Autor:
Kwan, Juliana, Sanchez, Carles, Clampitt, Joseph, Blazek, Jonathan, Crocce, Martin, Jain, Bhuvnesh, Zuntz, Joe, Amara, Adam, Becker, Matthew, Bernstein, Gary, Bonnett, Christopher, DeRose, Joseph, Dodelson, Scott, Eifler, Tim, Gaztanaga, Enrique, Giannantonio, Tommaso, Gruen, Daniel, Hartley, Will, Kacprzak, Tomasz, Kirk, Donnacha, Krause, Elisabeth, MacCrann, Niall, Miquel, Ramon, Park, Youngsoo, Ross, Ashley, Rozo, Eduardo, Rykoff, Eli, Sheldon, Erin, Troxel, Michael A., Wechsler, Risa, Abbott, Tim, Abdalla, Filipe, Allam, Sahar, Benoit-Lévy, Aurélien, Brooks, David, Burke, David, Rosell, Aurelio Carnero, Kind, Matias Carrasco, Cunha, Carlos, D'Andrea, Chris, da Costa, Luiz, Desai, Shantanu, Diehl, H. Thomas, Dietrich, Jörg, Doel, Peter, Evrard, August, Fernandez, Enrique, Finley, David, Flaugher, Brenna, Fosalba, Pablo, Frieman, Josh, Gerdes, David, Gruendl, Robert, Gutierrez, Gaston, Honscheid, Klaus, James, David, Jarvis, Mike, Kuehn, Kyler, Lahav, Ofer, Lima, Marcos, Maia, Marcio, Marshall, Jennifer, Martini, Paul, Melchior, Peter, Mohr, Joe, Nichol, Robert, Nord, Brian, Plazas, Andres, Reil, Kevin, Romer, Kathy, Roodman, Aaron, Sanchez, Eusebio, Scarpine, Vic, Sevilla, Ignacio, Smith, R. Chris, Soares-Santos, Marcelle, Sobreira, Flavia, Suchyta, Eric, Swanson, Molly, Tarle, Gregory, Thomas, Daniel, Vikram, Vinu, Walker, Alistair
We present cosmological constraints from the Dark Energy Survey (DES) using a combined analysis of angular clustering of red galaxies and their cross-correlation with weak gravitational lensing of background galaxies. We use a 139 square degree conti
Externí odkaz:
http://arxiv.org/abs/1604.07871
Autor:
Kirk, Donnacha, Brown, Michael L., Hoekstra, Henk, Joachimi, Benjamin, Kitching, Thomas D., Mandelbaum, Rachel, Sifón, Cristóbal, Cacciato, Marcello, Choi, Ami, Kiessling, Alina, Leonard, Adrienne, Rassat, Anais, Schäfer, Björn Malte
Publikováno v:
Space Science Reviews, Volume 193, Issue 1-4, pp. 139-211, 2015
Galaxy shapes are not randomly oriented, rather they are statistically aligned in a way that can depend on formation environment, history and galaxy type. Studying the alignment of galaxies can therefore deliver important information about the physic
Externí odkaz:
http://arxiv.org/abs/1504.05465
Autor:
Kiessling, Alina, Cacciato, Marcello, Joachimi, Benjamin, Kirk, Donnacha, Kitching, Thomas D., Leonard, Adrienne, Mandelbaum, Rachel, Schäfer, Björn Malte, Sifón, Cristóbal, Brown, Michael L., Rassat, Anais
Publikováno v:
Space Science Reviews, 11/2015, Volume 193, Issue 1-4, pp. 67-136
The shapes of galaxies are not randomly oriented on the sky. During the galaxy formation and evolution process, environment has a strong influence, as tidal gravitational fields in the large-scale structure tend to align nearby galaxies. Additionally
Externí odkaz:
http://arxiv.org/abs/1504.05546
Autor:
Joachimi, Benjamin, Cacciato, Marcello, Kitching, Thomas D., Leonard, Adrienne, Mandelbaum, Rachel, Schäfer, Björn Malte, Sifón, Cristóbal, Hoekstra, Henk, Kiessling, Alina, Kirk, Donnacha, Rassat, Anais
Publikováno v:
Space Science Reviews 2015, Volume 193, Issue 1-4, pp. 1-65
The alignments between galaxies, their underlying matter structures, and the cosmic web constitute vital ingredients for a comprehensive understanding of gravity, the nature of matter, and structure formation in the Universe. We provide an overview o
Externí odkaz:
http://arxiv.org/abs/1504.05456
Autor:
Bacon, David, Bridle, Sarah, Abdalla, Filipe B., Brown, Michael, Bull, Philip, Camera, Stefano, Fender, Rob, Grainge, Keith, Ivezic, Zeljko, Jarvis, Matt, Jackson, Neal, Kirk, Donnacha, Mann, Bob, McEwen, Jason, McKean, John, Newman, Jeffrey A., Raccanelli, Alvise, Sahlen, Martin, Santos, Mario, Tyson, Anthony, Zhao, Gong-Bo
We provide an overview of the science benefits of combining information from the Square Kilometre Array (SKA) and the Large Synoptic Survey Telescope (LSST). We first summarise the capabilities and timeline of the LSST and overview its science goals.
Externí odkaz:
http://arxiv.org/abs/1501.03977
Autor:
Abdalla, Filipe B., Bull, Philip, Camera, Stefano, Benoit-Lévy, Aurélien, Joachimi, Benjamin, Kirk, Donnacha, Klöckner, Hans-Rainer, Maartens, Roy, Raccanelli, Alvise, Santos, Mario G., Zhao, Gong-Bo
The Square Kilometer Array (SKA) has the potential to produce galaxy redshift surveys which will be competitive with other state of the art cosmological experiments in the next decade. In this chapter we summarise what capabilities the first and the
Externí odkaz:
http://arxiv.org/abs/1501.04035
By the time that the first phase of the Square Kilometre Array is deployed it will be able to perform state of the art Large Scale Structure (LSS) as well as Weak Gravitational Lensing (WGL) measurements of the distribution of matter in the Universe.
Externí odkaz:
http://arxiv.org/abs/1501.03848
Publikováno v:
MNRAS 2015 452 (2): 1202-1216
Weak lensing can be observed through a number of effects on the images of distant galaxies; their shapes are sheared, their sizes and fluxes (magnitudes) are magnified and their positions on the sky are modified by the lensing field. Galaxy shapes pr
Externí odkaz:
http://arxiv.org/abs/1410.7839
Autor:
Kirk, Donnacha, Lahav, Ofer, Bridle, Sarah, Jouvel, Stephanie, Abdalla, Filipe B., Frieman, Joshua A.
The combination of multiple cosmological probes can produce measurements of cosmological parameters much more stringent than those possible with any individual probe. We examine the combination of two highly correlated probes of late-time structure g
Externí odkaz:
http://arxiv.org/abs/1307.8062