Results 21 to 30 of about 4,634,710 (292)

Solar System-scale Interferometry on Fast Radio Bursts Could Measure Cosmic Distances with Subpercent Precision

The Astrophysical Journal Letters, 2023
The light from an extragalactic source at a distance d will arrive at detectors separated by 100 au at times that differ by as much as 120( d /100 Mpc) ^−1 nanoseconds because of the curvature of the wave front. At gigahertz frequencies, the arrival time
Kyle Boone, Matthew McQuinn
doaj   +1 more source

Evidence of the fine-structure constant in H0-tension

Physics Letters B, 2021
Modern precision measurements on Hubble expansion H(z) introduce two integral constraints on background models derived from early and late-time cosmology, based on Planck observations of the BAO and, respectively, H0, here normalized to ΛCDM.
Maurice H.P.M. van Putten
doaj   +1 more source

Cosmological Tensions and the Transitional Planck Mass Model

The Astrophysical Journal, 2023
In this follow-up analysis, we update previous constraints on the transitional Planck mass (TPM) modified gravity model using the latest version of EFTCAMB and provide new constraints using South Pole Telescope (SPT) and Planck anisotropy data along with
Joshua A. Kable, Giampaolo Benevento, Graeme E. Addison, Charles L. Bennett   +3 more
doaj   +1 more source

The Cosmological Parameters 2006 [PDF]

, 2006
25 pages TeX file. Article for The Review of Particle Physics 2006 (aka the Particle Data Book), published version at http://pdg.lbl.gov/ . This article supersedes astro-ph/0406681. Updated to match published version.
Lahav, O., Liddle, Andrew
openaire   +2 more sources

Effects of cosmological model assumptions on galaxy redshift survey measurements [PDF]

, 2010
The clustering of galaxies observed in future redshift surveys will provide a wealth of cosmological information. Matching the signal at different redshifts constrains the dark energy driving the acceleration of the expansion of the Universe.
Cimatti, A., Samushia, Lado, James E. Geach, Geach, J.E., Percival, W.J., Orsi, A., Lacey, Cedric, Orsi, Alvaro, Baugh, Carlton M., Luigi Guzzo, Samushia, L., Guzzo, L., Guzzo, Luigi, Cedric Lacey, Lado Samushia, Percival, Will J., Baugh, C., Mukherjee, P., Pia Mukherjee, Majerotto, Elisabetta, Geach, James E., Cimatti, Andrea, Lacey, C., Andrea Cimatti, Alvaro Orsi, Mukherjee, Pia, Yun Wang, Will J. Percival, Majerotto, E., Baugh, Carlton, Carlton Baugh, Wang, Yun, Wang, Y., Elisabetta Majerotto, Wang Yun, Baugh Carlton, Samushia Lado, Percival Will J., Mukherjee Pia, Majerotto Elisabetta, Orsi Alvaro, Geach James E., Guzzo Luigi, Lacey Cedric   +43 more
core   +1 more source

Measuring cosmological parameters [PDF]

Proceedings of the National Academy of Sciences, 1998
In this review, the status of measurements of the matter density (Ω m ), the vacuum energy density or cosmological constant (Ω Λ ), the Hubble constant ( H 0 ), and the ages of the oldest ...
openaire   +3 more sources

Cosmological parameter estimation and the inflationary cosmology [PDF]

Physical Review D, 2002
15 pages RevTeX file with figures incorporated. Slow-roll inflation module for use with the CAMB program can be found at http://astronomy.cpes.susx.ac.uk/~sleach/inflation/ This version corrects a typo in the definition of z_S (after Eq.1) and supersedes the journal ...
Leach, SM, Liddle, AR, Martin, J, Schwarz, Dominik   +3 more
openaire   +2 more sources

On algebraic dependence of cosmological parameters [PDF]

Gravitation and Cosmology, 2020
We show that the inverse function of the scale factor a(t) can be represented as an elliptic integral with a parameter. Using algebraic dependencies between cosmological parameters and the obtained inverse function formula, we compute in a uniform way some special events in the universe’s evolution.
Mijajlović, Žarko, Branković, Danijela   +1 more
openaire   +2 more sources

Unified Dark Matter models with fast transition [PDF]

, 2010
We investigate the general properties of Unified Dark Matter (UDM) fluid models where the pressure and the energy density are linked by a barotropic equation of state (EoS) p = p(ρ) and the perturbations are adiabatic.
Davide Pietrobon, Bruni, Marco, Bertacca, Daniele, Oliver F Piattella, Piattella, Oliver F., Piattella, O., Pietrobon, Davide, D. PIETROBON, Marco Bruni, PIATTELLA O, D. BERTACCA, M. BRUNI, Daniele Bertacca   +12 more
core   +1 more source

The Atacama Cosmology Telescope: DR4 maps and cosmological parameters [PDF]

Journal of Cosmology and Astroparticle Physics, 2020
We present new arcminute-resolution maps of the Cosmic Microwave Background temperature and polarization anisotropy from the Atacama Cosmology Telescope, using data taken from 2013–2016 at 98 and 150 GHz. The maps cover more than 17,000 deg2, the deepest 600 deg2with noise levels below 10μK-arcmin.
Aiola, Simone, Calabrese, Erminia, Maurin, Loïc, Naess, Sigurd, Schmitt, Benjamin L., Abitbol, Maximilian H., Addison, Graeme E., Ade, Peter A.R., Alonso, David, Amiri, Mandana, Amodeo, Stefania, Angile, Elio, Austermann, Jason E., Baildon, Taylor, Battaglia, Nick, Beall, James A., Bean, Rachel, Becker, Daniel T., Bond, J.Richard, Bruno, Sarah Marie, Calafut, Victoria, Campusano, Luis E., Carrero, Felipe, Chesmore, Grace E., Cho, Hsiao-Mei, Choi, Steve K., Clark, Susan E., Cothard, Nicholas F., Crichton, Devin, Crowley, Kevin T., Darwish, Omar, Datta, Rahul, Denison, Edward V., Devlin, Mark J., Duell, Cody J., Duff, Shannon M., Duivenvoorden, Adriaan J., Dunkley, Jo, Dünner, Rolando, Essinger-Hileman, Thomas, Fankhanel, Max, Ferraro, Simone, Fox, Anna E., Fuzia, Brittany, Gallardo, Patricio A., Gluscevic, Vera, Golec, Joseph E., Grace, Emily, Gralla, Megan, Guan, Yilun, Hall, Kirsten, Halpern, Mark, Han, Dongwon, Hargrave, Peter, Hasselfield, Matthew, Helton, Jakob M., Henderson, Shawn, Hensley, Brandon, Colin Hill, J., Hilton, Gene C., Hilton, Matt, Hincks, Adam D., Hložek, Renée, Ho, Shuay-Pwu Patty, Hubmayr, Johannes, Huffenberger, Kevin M., Hughes, John P., Infante, Leopoldo, Irwin, Kent, Jackson, Rebecca, Klein, Jeff, Knowles, Kenda, Koopman, Brian, Kosowsky, Arthur, Lakey, Vincent, Li, Dale, Li, Yaqiong, Li, Zack, Lokken, Martine, Louis, Thibaut, Lungu, Marius, Macinnis, Amanda, Madhavacheril, Mathew, Maldonado, Felipe, Mallaby-Kay, Maya, Marsden, Danica, Mcmahon, Jeff, Menanteau, Felipe, Moodley, Kavilan, Morton, Tim, Namikawa, Toshiya, Nati, Federico, Newburgh, Laura, Nibarger, John P., Nicola, Andrina, Niemack, Michael D., Nolta, Michael R., Orlowski-Sherer, John, Page, Lyman A., Pappas, Christine G., Partridge, Bruce, Phakathi, Phumlani, Pisano, Giampaolo, Prince, Heather, Puddu, Roberto, Qu, Frank J., Rivera, Jesus, Robertson, Naomi, Rojas, Felipe, Salatino, Maria, Schaan, Emmanuel, Schillaci, Alessandro, Sehgal, Neelima, Sherwin, Blake D., Sierra, Carlos, Sievers, Jon, Sifon, Cristobal, Sikhosana, Precious, Simon, Sara, Spergel, David N., Staggs, Suzanne T., Stevens, Jason, Storer, Emilie, Sunder, Dhaneshwar D., Switzer, Eric R., Thorne, Ben, Thornton, Robert, Trac, Hy, Treu, Jesse, Tucker, Carole, Vale, Leila R., van Engelen, Alexander, van Lanen, Jeff, Vavagiakis, Eve M., Wagoner, Kasey, Wang, Yuhan, Ward, Jonathan T., Wollack, Edward J., Xu, Zhilei, Zago, Fernando, Zhu, Ningfeng   +140 more
openaire   +9 more sources