Zobrazeno 1 - 10
of 242
pro vyhledávání: '"Cuesta, Antonio J."'
We study the impact of the assumption of a non-flat fiducial cosmology on the measurement, analysis and interpretation of BAO distance variables, along and across the line-of-sight. The assumption about cosmology enters in the choice of the base temp
Externí odkaz:
http://arxiv.org/abs/2402.03427
The Baryon Acoustic Oscillations (BAO) feature in the clustering of galaxies or quasars provides a ``standard ruler" for distance measurements in cosmology. In this work, we report a $2\sim3\sigma$ signal of the BAO dip feature in the galaxy density-
Externí odkaz:
http://arxiv.org/abs/2306.09407
We investigate how the resonant conversion at a temperature $\bar{T}=25$-$65$ keV of a fraction of the CMB photons into an axion-like majoron affects BBN. The scenario, that assumes the presence of a primordial magnetic field and the subsequent decay
Externí odkaz:
http://arxiv.org/abs/2305.16838
We propose a singlet majoron model that defines an inverse seesaw mechanism in the $\nu$ sector. The majoron $\phi$ has a mass $m_\phi\approx 0.5$ eV and a coupling to the $\tau$ lepton similar to the one to neutrinos. In the early universe it is ini
Externí odkaz:
http://arxiv.org/abs/2109.07336
Autor:
Zhao, Gong-Bo, Raveri, Marco, Pogosian, Levon, Wang, Yuting, Crittenden, Robert G., Handley, Will J., Percival, Will J., Beutler, Florian, Brinkmann, Jonathan, Chuang, Chia-Hsun, Cuesta, Antonio J., Eisenstein, Daniel J., Kitaura, Francisco-Shu, Koyama, Kazuya, L'Huillier, Benjamin, Nichol, Robert C., Pieri, Matthew M., Rodriguez-Torres, Sergio, Ross, Ashley J., Rossi, Graziano, Sánchez, Ariel G., Shafieloo, Arman, Tinker, Jeremy L., Tojeiro, Rita, Vazquez, Jose A., Zhang, Hanyu
Publikováno v:
Nature Astronomy, 1, 627-632, (2017)
A flat Friedman-Roberson-Walker universe dominated by a cosmological constant ($\Lambda$) and cold dark matter (CDM) has been the working model preferred by cosmologists since the discovery of cosmic acceleration. However, tensions of various degrees
Externí odkaz:
http://arxiv.org/abs/1701.08165
Autor:
Vargas-Magaña, Mariana, Ho, Shirley, Cuesta, Antonio J., O'Connell, Ross, Ross, Ashley J., Eisenstein, Daniel J., Percival, Will J., Grieb, Jan Niklas, Sánchez, Ariel G., Tinker, Jeremy L., Tojeiro, Rita, Beutler, Florian, Chuang, Chia-Hsun, Kitaura, Francisco-Shu, Prada, Francisco, Rodríguez-Torres, Sergio A., Rossi, Graziano, Seo, Hee-Jong, Brownstein, Joel R., Olmstead, Matthew, Thomas, Daniel
We investigate the potential sources of theoretical systematics in the anisotropic Baryon Acoustic Oscillation (BAO) distance scale measurements from the clustering of galaxies in configuration space using the final Data Release (DR12) of the Baryon
Externí odkaz:
http://arxiv.org/abs/1610.03506
Autor:
Pellejero-Ibanez, Marcos, Chuang, Chia-Hsun, Rubiño-Martín, J. A., Cuesta, Antonio J., Wang, Yuting, Zhao, Gong-bo, Ross, Ashley J., Rodríguez-Torres, Sergio, Prada, Francisco, Slosar, Anže, Vazquez, Jose A., Alam, Shadab, Beutler, Florian, Eisenstein, Daniel J., Gil-Marín, Héctor, Grieb, Jan Niklas, Ho, Shirley, Kitaura, Francisco-Shu, Percival, Will J., Rossi, Graziano, Salazar-Albornoz, Salvador, Samushia, Lado, Sánchez, Ariel G., Satpathy, Siddharth, Seo, Hee-Jong, Tinker, Jeremy L., Tojeiro, Rita, Vargas-Magaña, Mariana, Brownstein, Joel R., Nichol, Robert C, Olmstead, Matthew D
We develop a new methodology called double-probe analysis with the aim of minimizing informative priors in the estimation of cosmological parameters. We extract the dark-energy-model-independent cosmological constraints from the joint data sets of Ba
Externí odkaz:
http://arxiv.org/abs/1607.03152
Autor:
Beutler, Florian, Seo, Hee-Jong, Saito, Shun, Chuang, Chia-Hsun, Cuesta, Antonio J., Eisenstein, Daniel J., Gil-Marín, Héctor, Grieb, Jan Niklas, Hand, Nick, Kitaura, Francisco-Shu, Modi, Chirag, Nichol, Robert C., Olmstead, Matthew D., Percival, Will J., Prada, Francisco, Sánchez, Ariel G., Rodriguez-Torres, Sergio, Ross, Ashley J., Ross, Nicholas P., Schneider, Donald P., Tinker, Jeremy, Tojeiro, Rita, Vargas-Magaña, Mariana
We investigate the anisotropic clustering of the Baryon Oscillation Spectroscopic Survey (BOSS) Data Release 12 (DR12) sample, which consists of $1\,198\,006$ galaxies in the redshift range $0.2 < z < 0.75$ and a sky coverage of $10\,252\,$deg$^2$. W
Externí odkaz:
http://arxiv.org/abs/1607.03150
Autor:
Sanchez, Ariel G., Grieb, Jan Niklas, Salazar-Albornoz, Salvador, Alam, Shadab, Beutler, Florian, Ross, Ashley J., Brownstein, Joel R., Chuang, Chia-Hsun, Cuesta, Antonio J., Eisenstein, Daniel J., Kitaura, Francisco-Shu, Percival, Will J., Prada, Francisco, Rodriguez-Torres, Sergio, Seo, Hee-Jong, Tinker, Jeremy, Tojeiro, Rita, Vargas-Magana, Mariana, Vazquez, Jose A., Zhao, Gong-Bo
The cosmological information contained in anisotropic galaxy clustering measurements can often be compressed into a small number of parameters whose posterior distribution is well described by a Gaussian. We present a general methodology to combine t
Externí odkaz:
http://arxiv.org/abs/1607.03146
Autor:
Grieb, Jan Niklas, Sánchez, Ariel G., Salazar-Albornoz, Salvador, Scoccimarro, Román, Crocce, Martín, Vecchia, Claudio Dalla, Montesano, Francesco, Gil-Marín, Héctor, Ross, Ashley J., Beutler, Florian, Rodríguez-Torres, Sergio, Chuang, Chia-Hsun, Prada, Francisco, Kitaura, Francisco-Shu, Cuesta, Antonio J., Eisenstein, Daniel J., Percival, Will J., Vargas-Magana, Mariana, Tinker, Jeremy L., Tojeiro, Rita, Brownstein, Joel R., Maraston, Claudia, Nichol, Robert C., Olmstead, Matthew D., Samushia, Lado, Seo, Hee-Jong, Streblyanska, Alina, Zhao, Gong-bo
We extract cosmological information from the anisotropic power spectrum measurements from the recently completed Baryon Oscillation Spectroscopic Survey (BOSS), extending the concept of clustering wedges to Fourier space. Making use of new FFT-based
Externí odkaz:
http://arxiv.org/abs/1607.03143