Results 91 to 100 of about 171,556 (244)

The Cosmological Parameters

, 2003
Pre-publication version withdrawn at the request of the journal. Final version now available in Reviews of Particle Physics at http://pdg.lbl.gov/2004/reviews/contents_sports.html See also astro-ph ...
Lahav, Ofer, Liddle, Andrew R
openaire   +3 more sources

CASCO: Cosmological and AStrophysical parameters from Cosmological simulations and Observations

Astronomy & Astrophysics
Small-scale discrepancies in the standard Lamda cold dark matter paradigm have motivated the exploration of alternative dark matter (DM) models, such as warm dark matter (WDM).
Silvestrini M., Tortora C., Busillo V., Brooks Alyson M., Farahi A., Garcia A. M., Kallivayalil N., Napolitano N. R., Rose J. C., Torrey P., Villaescusa-Navarro F., Vogelsberger M.   +11 more
doaj   +1 more source

Noble gases and nitrogen in material from asteroid Bennu

Meteoritics &Planetary Science, EarlyView.
Abstract We report the elemental and isotopic abundances of all stable noble gases (helium, neon, argon, krypton, and xenon) in eight particles from asteroid Bennu returned by NASA's OSIRIS‐REx mission. We also report nitrogen abundances and isotopic ratios that were analyzed alongside neon and argon in four additional Bennu particles.
B. Marty, L. Zimmermann, E. Füri, D. V. Bekaert, J. J. Barnes, A. N. Nguyen, H. C. Connolly, D. S. Lauretta   +7 more
wiley   +1 more source

Dependence of Inflationary Reconstruction upon Cosmological Parameters

, 1995
The inflationary potential and its derivatives determine the spectrum of scalar and tensor metric perturbations that arise from quantum fluctuations during inflation.
A. A. Starobinskii, A. A. Starobinskii, A. G. Doroshkevich, A. G. Doroshkevich, A. H. Guth, A. Kosowsky, A. R. Liddle, A. R. Liddle, A. R. Liddle, A. R. Liddle, D. H. Lyth, E. J. Copeland, E. J. Copeland, E. J. Copeland, E. J. Copeland, E. J. Copeland, F. Lucchin, G. Efstathiou, G. Efstathiou, J. M. Bardeen, J. P. Ostriker, J. Silk, J. Silk, L. F. Abbott, L. F. Abbott, L. Knox, L. Knox, L. Kofman, L. Krauss, M. Kamionkowski, M. S. Turner, M. S. Turner, M. S. Turner, M. S. Turner, M. S. Turner, M. S. Turner, M. S. Turner, M. White, M. White, Martin White, Michael S. Turner, N. Sugiyama, P. J. E. Peebles, P. J. E. Peebles, P. J. E. Peebles, R. Fabbri, R. K. Sachs, S. M. Carroll, S. W. Hawking, V. A. Rubakov   +49 more
core   +1 more source

Determining impact angle from the spatial distribution of shock metamorphism: A case study of the Gosses Bluff (Tnorala) impact structure, Australia

Meteoritics &Planetary Science, EarlyView.
Abstract The majority of planetary impacts occur at oblique angles. Impact structures on Earth are commonly eroded or buried, rendering the identification of the direction and angle of impact—using methods such as asymmetries in ejecta distribution, surface topographic expression, central uplift structure, and geophysical anomalies—challenging. In this
Eloise E. Matthews, Auriol S. P. Rae, Thomas Kenkmann, Nicholas E. Timms, Aaron J. Cavosie, Marian B. Holness   +5 more
wiley   +1 more source

Revisiting the Hubble Constant, Sound Horizon, and Cosmography from Late-time Universe Observations

The Astrophysical Journal
The Hubble tension has become one of the central problems in cosmology. In this work, we determine the Hubble constant H _0 and sound horizon r _d by using the combination of baryon acoustic oscillations (BAOs) from DESI surveys, time-delay lensed ...
Zhiwei Yang, Tonghua Liu, Xiaolei Li
doaj   +1 more source

A geophysical investigation of the Roter Kamm impact crater, Namibia

Meteoritics &Planetary Science, EarlyView.
Abstract The Roter Kamm impact crater is located in the southern Namib Desert. The crater has a diameter of 2.5 km and belongs to the category of simple, bowl‐shaped impact craters, with an elevated rim of fractured target rock. The crater's interior is completely buried beneath sediments, preventing extensive surface investigations of the bedrock ...
Hannah Nienhaus, Pritam Yogeshwar, Wiebke Mörbe, Bülent Tezkan, Yajun Liu, Bufelo Lushetile, Martin Melles   +6 more
wiley   +1 more source

Cosmological Constraints on Mirror Matter Parameters

Advances in High Energy Physics, 2014
Up-to-date estimates of the cosmological parameters are presented as a result of numerical simulations of cosmic microwave background and large scale structure, considering a flat Universe in which the dark matter is made entirely or partly of mirror ...
Paolo Ciarcelluti, Quentin Wallemacq
doaj   +1 more source

Cosmography of the Dynamical Cosmological «Constant»

East European Journal of Physics, 2019
The paper considers a cosmographical approach to analyze cosmological models. Cosmography is a method to describe the kinematics of the cosmological expansion based only on the cosmological principle. We consider a method of treating free parameters of a
Oryna Ivashtenko
doaj   +1 more source

Comparison of cosmological models using standard rulers and candles

, 2015
In this paper, we used standard rulers and standard candles (separately and jointly) to explore five popular dark energy models under assumption of spatial flatness of the Universe.
Biesiada, Marek, Cao, Shuo, Li, Song, Li, Xiaolei, Zheng, Xiaogang   +4 more
core   +1 more source