Results 51 to 60 of about 1,993,973 (222)

The Fractal Geometry of the Cosmic Web and Its Formation

Advances in Astronomy, Volume 2019, Issue 1, 2019., 2019
The cosmic web structure is studied with the concepts and methods of fractal geometry, employing the adhesion model of cosmological dynamics as a basic reference. The structures of matter clusters and cosmic voids in cosmological N‐body simulations or the Sloan Digital Sky Survey are elucidated by means of multifractal geometry.
Jose Gaite, Geza Kovacs
wiley   +1 more source

SVR Algorithm as a Tool for More Optimal Intergalactic Medium Simulation in the Epoch of Reionization [PDF]

, 2023
All kinds of simulations of the intergalactic medium, such as hydrodynamic simulation, N-body simulation, numerical and semi-numerical simulation, etc., have been used to realize the history of this medium.
Firouzjaee, Javad T., Berahman, Mahsa, Hosseini, S. Mobina, Tabasi, Seyed Sajad   +3 more
core  

Lyα emitters in a cosmological volume II: the impact of the intergalactic medium [PDF]

, 2020
In the near future galaxy surveys will target Lyman alpha emitting galaxies (LAEs) to unveil the nature of dark energy. It has been suggested that the observability of LAEs is coupled to the large scale properties of the intergalactic medium.
Lacey, Cedric G, Baugh, Carlton M, Bonoli, Silvia, Gurung-López, Siddhartha, Padilla, Nelson, Orsi, Álvaro A, Lacey, C.G., Gurung-Lopez, S., Orsi, A.A., Bonoli, S., Baugh, C.M.   +10 more
core   +1 more source

Communicating tokenomics and monetary policy: A comparative analysis of real and virtual economies

International Journal of Finance &Economics, Volume 30, Issue 3, Page 2849-2866, July 2025.
Abstract This article investigates the economic governance of blockchain‐based virtual economies in the context of monetary policy. Focusing on tokenomics communication, we employ deductive and inductive approaches, applying real‐world monetary policy metrics and text mining frameworks. Our comparative analysis reveals that the tokenomics communication
Kane Falco ter Veer, Timo Heinrich
wiley   +1 more source

Constraints on the Evolution of the Ionizing Background and Ionizing Photon Mean Free Path at the End of Reionization

The Astrophysical Journal
The variations in Ly α forest opacity observed at z > 5.3 between lines of sight to different background quasars are too strong to be caused by fluctuations in the density field alone.
Frederick B. Davies, Sarah E. I. Bosman, Prakash Gaikwad, Fahad Nasir, Joseph F. Hennawi, George D. Becker, Martin G. Haehnelt, Valentina D’Odorico, Manuela Bischetti, Anna-Christina Eilers, Laura C. Keating, Girish Kulkarni, Samuel Lai, Chiara Mazzucchelli, Yuxiang Qin, Sindhu Satyavolu, Feige Wang, Jinyi Yang, Yongda Zhu   +18 more
doaj   +1 more source

Deep Space Network Radio Science and Ground‐Based Planetary Radar in the Next Decade

Radio Science, Volume 60, Issue 7, July 2025.
Abstract The Deep Space Network (DSN) has been a core operational element of NASA's crewed and robotic exploration of the Solar System since the early 1960s. The primary role of the DSN has been to acquire telemetry and navigation data, but over the years, its radiometric and radar capabilities have expanded to form a system for obtaining unique ...
R. S. Park, J. E. Riedel, N. Rodriguez‐Alvarez, M. Brozovic, L. A. M. Benner, P. Vergados, D. Buccino, C. S. Jacobs, L. S. Locke, S. W. Asmar, R. Castano, T. J. W. Lazio, J. Jao, C. Lee   +13 more
wiley   +1 more source

The Predicament of Absorption-dominated Reionization. II. Observational Estimate of the Clumping Factor at the End of Reionization

The Astrophysical Journal
The history of reionization reflects the cumulative injection of ionizing photons by sources and the absorption of ionizing photons by sinks. The latter process is traditionally described in terms of a “clumping factor,” which encodes the average ...
Frederick B. Davies, Sarah E. I. Bosman, Steven R. Furlanetto   +2 more
doaj   +1 more source

Simulations of the Intergalactic Medium [PDF]

Symposium - International Astronomical Union, 2005
I present an epochal review of baryons in the intergalactic medium (IGM), from the reionization epoch until today. Recent observations indicate a protracted period of reionization, suggesting multiple populations of reionizers; detection of these z ≳ 6 sources is a key goal that is now coming within reach.
openaire   +2 more sources

Modeling and Optimization of Infrared‐Convection Drying Parameters and Slice Thickness of Onion Slices: Effects on Drying Kinetics and Physicochemical Quality

Food Science &Nutrition, Volume 13, Issue 6, June 2025.
This assessment focused on drying time, color, shrinkage, water activity, and rehydration ratio. Onion slices were dried using infrared powers 1500, 3500, and 5500 W/m2, airflow rates 0.3, 0.7, and 1.0 m/s, and thicknesses 4, 6, and 8 mm. Midilli and Kucuk most effectively improved the drying process of onion slices in a thin layer.
Hany S. El‐Mesery, Ahmed H. ElMesiry, Zicheng Hu, Xinai Zhang, Evans K. Quaye   +4 more
wiley   +1 more source

The Faint Intergalactic Redshifted Emission Balloon and the Cosmic Web Imager: Two Integral Field Spectrographs Designed to Study Emission from the Intergalactic Medium [PDF]

, 2012
Gas in the intergalactic medium serves as the fuel for galaxies. It carries signatures of galactic feedback, including matter and energy outflows.
Matuszewski, Mateusz Konrad
core   +1 more source