Results 111 to 120 of about 60,808,388 (219)

Constraints on the Hubble and Matter Density Parameters with and Without Modelling the CMB Anisotropies

Astronomy
We consider constraints on the Hubble parameter H0 and the matter density parameter ΩM from the following: (i) the age of the Universe based on old stars and stellar populations in the Galactic disc and halo; (ii) the turnover scale in the matter power ...
Indranil Banik, Nick Samaras
doaj   +1 more source

Constraints on the dark energy dipole from large-scale structures

, 2016
The high-significance measurement of large-scale structure signals enables testing the isotropy of the Universe. The measurement of cosmological parameters through the large-scale distribution of matter is now a mature domain.
G. Hurier
core   +1 more source

Statistical Mapping of ULF Wave Power in the Vicinity of Earth's Bow Shock Using Cluster Magnetic Field Data

Journal of Geophysical Research: Space Physics, Volume 131, Issue 10, October 2026.
Abstract Ultra‐low frequency (ULF) waves with frequencies 10–140 s are a characteristic feature of the foreshock, playing important roles in transient formation, shock reformation, and particle acceleration. We utilize 23 years of Cluster data to map ULF wave power and compressibility in the vicinity of Earth's bow shock, combining Cluster data with ...
R. L. Atkinson, H. Hietala, T. Karlsson, D. Manzini, D. Burgess   +4 more
wiley   +1 more source

Constraining the growth rate on linear scales by combining SKAO and DESI surveys

European Physical Journal C: Particles and Fields
In the pursuit of understanding the large-scale structure of the Universe, the synergy between complementary cosmological surveys has proven to be a powerful tool.
Simthembile Dlamini, Sheean Jolicoeur, Roy Maartens   +2 more
doaj   +1 more source

The Large-scale Structure of the Universe: Probes of Cosmology and Structure Formation [PDF]

, 2013
The usefulness of large-scale structure as a probe of cosmology and structure formation is increasing as large deep surveys in multi-wavelength bands are becoming possible.
Noh, Yookyung
core  

Constraining primordial non-Gaussianity from the large scale structure two-point and three-point correlation functions [PDF]

International audienceSurveys of cosmological large-scale structure (LSS) are sensitive to the presence of local primordial non-Gaussianity (PNG), and may be used to constrain models of inflation.
Avila, S, de la Macorra, A, Dey, B, Gaztañaga, E, Silber, J.H, Zhou, Z, Forero-Romero, J E, Juneau, S, Myers, A.D, García-Bellido, J, Miquel, R, Muñoz-Gutièrrez, A, Claybaugh, T, Kisner, T, Schubnell, M, Weaver, B A, Demina, R, Manera, M, Adame, A.G, Levi, B, Mueller, E, Brown, Z, Aguilar, J, Honscheid, K, Sanchez, E, Landriau, M, Palanque-Delabrouille, N, Rezaie, M, Silber, J H, Nie, J, Schlegel, D, Sprayberry, D, Kehoe, R, Gontcho A. Gontcho, S, Fanning, K, Le Guillou, L, Adame, A G, Myers, A D, Howlett, C, Blum, R, Tarlé, G, Weaver, B.A, Gonzalez-Perez, V, Brooks, D, Doel, P, Forero-Romero, J.E, Schlafly, E, Poppett, C, Chaussidon, E, Yuan, S, Niz, G, Gontcho, S Gontcho A, Ahlen, S, Cole, S, Rossi, G, Zou, H, Vargas-Magaña, M, García-Bellido, Juan, Adame, AG, Forero-Romero, JE, Gaztañaga, Enrique, Gonzalez-Perez, Violeta, Brown, Zachery, Weaver, BA, Adame, Adrian G., Myers, AD, Silber, JH   +66 more
core   +1 more source

Kelvin–Helmholtz Spectral Redistribution by Flow and Density Structure at the Dusk Dayside Magnetopause

Journal of Geophysical Research: Space Physics, Volume 131, Issue 10, October 2026.
Abstract We study the development of the Kelvin‐Helmholtz instability (KHI) along the dusk dayside Earth's magnetopause with and without the presence of enhanced plasma density at the shear interface. Using three‐dimensional MAGE global simulations, we establish general KHI growth rate diagrams, which depend sensitively on the transverse profiles of ...
G. Peyrichon, J.‐F. Ripoll, H. El‐Rabii, A. T. Michael, V. G. Merkin, M. Cosmides, K. Sorathia, F. R. Toffoletto, A. Y. Ukhorskiy   +8 more
wiley   +1 more source

Investigating late-time cosmology using Finsler-Randers geometry and Barthel connection: Observational constraints and implications

Nuclear Physics B
In this study we explore cosmological anisotropies and dark energy using Finsler-Randers geometry, an extension of Riemannian geometry that incorporates directional dependence in the spacetime structure.
J. Praveen, S.K. Narasimhamurthy
doaj   +1 more source

Characterization of High‐Frequency GNSS Total Electron Content Variations

Journal of Geophysical Research: Space Physics, Volume 131, Issue 10, October 2026.
Abstract Global Navigation Satellite System (GNSS)–derived Total Electron Content (TEC) is widely used to investigate ionospheric variability, but has primarily been applied to low‐frequency fluctuations. Here we present a long‐term statistical characterization of high‐frequency (30–500 mHz) TEC variations using multi‐constellation GNSS data from 11 ...
J. Pérez‐Coll Jiménez, N. Ivchenko, N. Partamies, M. Håkansson   +3 more
wiley   +1 more source

The BINGO project

Astronomy & Astrophysics
Context. Building on the transformative success of optical redshift surveys, the emerging technique of neutral hydrogen (HI) intensity mapping (IM) offers a novel probe of large-scale structure (LSS) growth and the late-time accelerated expansion of the ...
Motta Pablo, Abdalla Filipe B., Novaes Camila P., Abdalla Elcio, Zhang Jiajun, Hoerning Gabriel A., Marins Alessandro, de Mericia Eduardo J., Ponte Luiza O., Queiroz Amilcar R., Villela Thyrso, Wang Bin, Wuensche Carlos A., Feng Chang, Gurjão Edmar C.   +14 more
doaj   +1 more source