Results 41 to 50 of about 89,722 (300)

Observational cosmology using characteristic numerical relativity

, 2010
The characteristic formalism in numerical relativity, which has been developed to study gravitational waves, and the observer metric approach in observational cosmology both make use of coordinate systems based on null cones.
Bishop, N. T., van der Walt, P. J.
core   +1 more source

Te Vacancy‐Driven Anomalous Transport in ZrTe5 and HfTe5

Advanced Physics Research, EarlyView.
Less is more! Recent discoveries in topological quantum materials have rekindled excitement for direct observation of quantum anomalies in a condensed matter physics laboratory, which is historically intractable in particle and cosmological physics. Using atomistic modeling this study sheds light on the source of the anomalous transport properties that
Elizabeth A. Peterson, Christopher Lane, Jian‐Xin Zhu   +2 more
wiley   +1 more source

Looking at Infrared Background Radiation Anisotropies with Spitzer: Large-scale Anisotropies and Their Implications

The Astrophysical Journal Letters
We use Spitzer/IRAC deep-exposure data covering two significantly larger than before sky areas to construct maps suitable for evaluating source-subtracted fluctuations in the cosmic infrared background (CIB).
A. Kashlinsky, Richard G. Arendt, M. L. N. Ashby, J. Kruk, N. Odegard   +4 more
doaj   +1 more source

Distance Duality Test: The Evolution of Radio Sources Mimics a Nonexpanding Universe

The Astrophysical Journal Letters, 2023
Distance duality relation (DDR) marks a fundamental difference between expanding and nonexpanding universes, as an expanding metric causes angular diameter distance smaller than luminosity distance by an extra factor of (1 + z ). Here we report a test of
Pengfei Li
doaj   +1 more source

Observational constraints on phantom power-law cosmology [PDF]

, 2011
We investigate phantom cosmology in which the scale factor is a power law, and we use cosmological observations from Cosmic Microwave Background (CMB), Baryon Acoustic Oscillations (BAO) and observational Hubble data, in order to impose complete ...
Abraham, Alcaniz, Allen, Allen, Allen, Allen, Amanullah, Bengochea, Bogdanos, Briscese, Burin Gumjudpai, Cai, Cai, Cai, Calcagni, Caldwell, Caldwell, Capasso, Capozziello, Chakkrit Kaeonikhom, Cline, Cline, Das, Dev, Dev, Dunkley, Dunlop, Dutta, Dutta, Dutta, Dutta, Eisenstein, Elizalde, Elizalde, Elizalde, Emmanuel N. Saridakis, Eune, Feng, Feng, Feng, Gao, Germani, Gonzalez-Diaz, Gonzalez-Diaz, Gumjudpai, Guo, Guo, Hicken, Horava, Hsu, Hu, Hu, Huang, Ito, Jimenez, Jimenez, Kallosh, Kaplinghat, Kaplinghat, Kaplinghat, Kessler, Kiritsis, Kiritsis, Kolb, Komatsu, Komatsu, Komatsu, Koutsoumbas, Kowalski, Larson, Larson, Leon, Li, Li, Li, Liddle, Lohiya, Lu, Neupane, Neupane, Nojiri, Nojiri, Nojiri, Nojiri, Nojiri, Nojiri, Nojiri, Nolan, Onemli, Park, Pavon, Peebles, Peebles, Percival, Perlmutter, Piao, Piao, Qiu, Ratra, Riess, Riess, Sahni, Sami, Saridakis, Saridakis, Saridakis, Saridakis, Saridakis, Saridakis, Saridakis, Setare, Setare, Setare, Sethi, Sethi, Shapiro, Simon, Singh, Sola, Spinrad, Steinhardt, Stern, Tegmark, Thepsuriya, Treu, Treu, Treu, Vishwakarma, Wang, Wetterich, Wu, Zhang, Zhao, Zhu, Zlatev   +134 more
core   +2 more sources

First Nations Aboriginal Ring Trees in New South Wales—Establishing a Cultural Context and Basic Archaeological Recording Typology

Archaeology in Oceania, EarlyView.
ABSTRACT This paper examines ring trees—a type of culturally modified tree, intentionally created by Australian First Nations Aboriginal peoples by manipulating tree growth to form permanent loops (rings) within the structure. Historically, this site type has been underrepresented and underappreciated by academics and archaeologists.
Hannah Morris, Talei Holm, Norma Freeman, Timothy Owen   +3 more
wiley   +1 more source

The Aemulus Project. V. Cosmological Constraint from Small-scale Clustering of BOSS Galaxies

The Astrophysical Journal, 2023
We analyze clustering measurements of BOSS galaxies using a simulation-based emulator of two-point statistics. We focus on the monopole and quadrupole of the redshift-space correlation function, and the projected correlation function, at scales of 0.1 ...
Zhongxu Zhai, Jeremy L. Tinker, Arka Banerjee, Joseph DeRose, Hong Guo, Yao-Yuan Mao, Sean McLaughlin, Kate Storey-Fisher, Risa H. Wechsler   +8 more
doaj   +1 more source

A scale-dependent cosmology for the inhomogeneous Universe

, 1995
A scale-dependent cosmology is proposed in which the Robertson-Walker metric and the Einstein equation are modified in such a way that $\Omega_0$, $H_0$ and the age of the Universe all become scale-dependent.
Broadhurst, C.W. Kim, Freedman, J. Song, Lucchin, Mather, Pierce, Schramm, Smoot, T.H. Lee, Vettolani, Wright   +11 more
core   +1 more source

Observational constraints on self-accelerating cosmology [PDF]

, 2006
The DGP brane-world model provides a simple alternative to the standard LCDM cosmology, with the same number of parameters. There is no dark energy - the late universe self-accelerates due to an infrared modification of gravity.
Maartens, Roy, Majerotto, Elisabetta
core   +2 more sources

A Multifaceted Spatial Analysis of Tomb Distribution in Blemmyan Berenike (Eastern Desert of Egypt)

Archaeological Prospection, EarlyView.
ABSTRACT This study examines the spatial and visual organisation of tombs in the post–Roman Berenike located in Egypt's Eastern Desert. Archaeological surveys, remote sensing, geophysical methods, excavations and GIS‐based analyses are used for a comprehensive understanding of the spatial patterns and cultural significance behind the positions and ...
Mariusz Gwiazda, Anna Fijałkowska, Oskar Graszka, Tomasz Herbich, Michał Tyszkiewicz   +4 more
wiley   +1 more source