Zobrazeno 1 - 10
of 73
pro vyhledávání: '"Lado Samushia"'
Publikováno v:
Universe, Vol 10, Iss 3, p 122 (2024)
Scalar field ϕCDM models provide an alternative to the standard ΛCDM paradigm, while being physically better motivated. Dynamical scalar field ϕCDM models are divided into two classes: the quintessence (minimally and non-minimally interacting with
Externí odkaz:
https://doaj.org/article/a1a3b72b8c294e9192ca765290032ef1
Autor:
Olga Avsajanishvili, Lado Samushia
Publikováno v:
Physical Sciences Forum, Vol 7, Iss 1, p 26 (2023)
We studied the following scalar field ϕCDM models: ten quintessence models and seven phantom models. We reconstructed these models using the phenomenological method developed by our group. For each potential, the following ranges were found: (i) mod
Externí odkaz:
https://doaj.org/article/347f734cdf6041c0b2d83e0b019d32d2
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 78, Iss 9, Pp 1-10 (2018)
Abstract Most dark energy models have the $$\varLambda $$ Λ CDM as their limit, and if future observations constrain our universe to be close to $$\varLambda $$ Λ CDM Bayesian arguments about the evidence and the fine-tuning will have to be employe
Externí odkaz:
https://doaj.org/article/1de85a2b182f4dce8e59a174b996fcb1
Autor:
Hanyu Zhang, Lado Samushia, David Brooks, Axel de la Macorra, Peter Doel, Enrique Gaztañaga, Satya Gontcho A Gontcho, Klaus Honscheid, Robert Kehoe, Theodore Kisner, Aaron Meisner, Claire Poppett, Michael Schubnell, Gregory Tarle, Kai Zhang, Hu Zou
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 515:6133-6150
We investigate using three-point statistics in constraining the galaxy–halo connection. We show that for some galaxy samples, the constraints on the halo occupation distribution parameters are dominated by the three-point function signal (over its
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4e98ed0a763dbd97225ebfd5ac48fb99
https://doi.org/10.1093/mnras/stac2147
https://doi.org/10.1093/mnras/stac2147
Publikováno v:
Physical Review D. 107
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ae838efac85db1582a4d4f6b998d95bb
https://doi.org/10.1103/physrevd.107.063530
https://doi.org/10.1103/physrevd.107.063530
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 505:628-641
The shapes of galaxy N-point correlation functions can be used as standard rulers to constrain the distance-redshift relationship and thence the expansion rate of the Universe. The cosmological density fields traced by late-time galaxy formation are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fa21f31ebf2a283063fe14c03b130f45
https://doi.org/10.1093/mnras/stab1199
https://doi.org/10.1093/mnras/stab1199
Autor:
David W. Pearson, Lado Samushia
Publikováno v:
Monthly Notices of the Royal Astronomical Society: Letters. 486:L105-L109
As we move towards future galaxy surveys, the three-point statistics will be increasingly leveraged to enhance the constraining power of the data on cosmological parameters. An essential part of the three-point function estimation is performing tripl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::46de9b1b5d4f999d43daa1388003447d
https://doi.org/10.1093/mnrasl/slz067
https://doi.org/10.1093/mnrasl/slz067
Autor:
Yun Wang, Zhongxu Zhai, Anahita Alavi, Elena Massara, Alice Pisani, Andrew Benson, Christopher M. Hirata, Lado Samushia, David H. Weinberg, James Colbert, Olivier Doré, Tim Eifler, Chen Heinrich, Shirley Ho, Elisabeth Krause, Nikhil Padmanabhan, David Spergel, Harry I. Teplitz
The Nancy Grace Roman Space Telescope will conduct a High Latitude Spectroscopic Survey (HLSS) over a large volume at high redshift, using the near-IR grism (1.0-1.93 $\mu$m, $R=435-865$) and the 0.28 deg$^2$ wide field camera. We present a reference
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a5596c06c69c5ad4c56194977b3d4d1f
Autor:
Lado Samushia, David W. Pearson
Publikováno v:
Pearson, D W & Samushia, L 2018, ' A detection of the Baryon Acoustic Oscillation features in the SDSS BOSS DR12 galaxy bispectrum ', Monthly Notices of the Royal Astronomical Society, vol. 478, no. 4, pp. 4500-4512 . https://doi.org/10.1093/mnras/sty1266
We present the first high significance detection ($4.1\sigma$) of the Baryon Acoustic Oscillations (BAO) feature in the galaxy bispectrum of the twelfth data release (DR12) of the Baryon Oscillation Spectroscopic Survey (BOSS) CMASS sample ($0.43 \le
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::251e96912d6072168bd9fee95b0d42f7
https://doi.org/10.1093/mnras/sty1266
https://doi.org/10.1093/mnras/sty1266
Autor:
Mohamed Bouri, G. Tarle, Stephen A. Shectman, Jean-Paul Kneib, Christophe Yèche, Claire Poppett, Matthew Johns, Guillermo A. Blanc, Robert Besuner, Hee-Jong Seo, Marcelle Soares-Santos, Zachary Slepian, Jeffrey D. Crane, H. Heetderks, Anthony L. Piro, Patrick N. Jelinsky, Andreu Font-Ribera, Segev BenZvi, Luzius Kronig, Greg Aldering, Peter Nugent, Christophe Magneville, Dennis Zaritsky, Juna A. Kollmeier, Dragan Huterer, Michele Liguori, Nathalie Palanque-Delabrouille, Adam S. Bolton, Ashley J. Ross, David Rabinowitz, Ofer Lahav, Eric V. Linder, John S. Mulchaey, Lado Samushia, E. Buckley-Geer, Ian B. Thompson, Joshua D. Simon, Risa H. Wechsler, Peter Doel, David J. Brooks, L. Infante, G. Gutierrez, Dustin Lang, Paul Martini, Hans-Walter Rix, Michael Lampton, Xiaohui Fan, Stephen M. Kent, Julien Guy, C. Baltay, Monica Valluri, Anthony R. Pullen, Uroš Seljak, Martin White, Joseph H. Silber, Nick Konidaris, Michael J. Wilson, Christopher J. Miller, David J. Schlegel, Zheng Cai, Stephen Bailey, Jason X. Prochaska, Patrick McDonald, Mario Mateo, Dionysios Karagiannis, Emmanuel Schaan, Simone Ferraro, Michael Schubnell, Alexie Leauthaud, John Moustakas, Alex G. Kim, Adam D. Myers, Nikhil Padmanabhan, Jeffrey A. Newman, S. Ramirez, Arjun Dey, Chris Bebek
Author(s): Schlegel, David J; Kollmeier, Juna A; Aldering, Greg; Bailey, Stephen; Baltay, Charles; Bebek, Christopher; BenZvi, Segev; Besuner, Robert; Blanc, Guillermo; Bolton, Adam S; Bouri, Mohamed; Brooks, David; Buckley-Geer, Elizabeth; Cai, Zhen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::342e57712cf7c73a8bea543a1fb532dd
https://doi.org/10.2172/1568868
https://doi.org/10.2172/1568868