Results 101 to 110 of about 68,110 (257)

A holistic view on ram pressure stripping in the Virgo cluster - The first complete model-based time sequence

, 2009
Based on a comparison of dynamical models with observations of the interstellar gas in 6 Virgo cluster spiral galaxies a first complete ram pressure stripping time sequence has been established.
B. Vollmer, Balogh, Biller, Byrd, Böhringer, Chamaraux, Chung, Combes, Crowl, Dressler, Dressler, Dressler, Fasano, Finoguenov, Giovanelli, Gomez, Gott, Hashimoto, Haynes, Irwin, Kauffmann, Kenney, Kenney, Kenney, Koopmann, Lewis, Mei, Moore, Moore, Moran, Oemler, Oemler, Oosterloo, Otmianowska-Mazur, Panuzzo, Poggianti, Randall, Schindler, Shibata, Soida, Valluri, Vollmer, Vollmer, Vollmer, Vollmer, Vollmer, Vollmer, Vollmer, Vollmer, Vollmer   +49 more
core   +1 more source

Evaluating the Rate of Penetration With Deep‐Learning Predictive Models

International Journal of Energy Research, Volume 2025, Issue 1, 2025.
This paper presents a sophisticated deep‐learning framework designed for predicting rate of penetration (ROP) by assimilating well‐log data, litho‐facies classifications, and parameters of onshore production wells drilling operations in Central Asia. The evolution in bit technology and relevant drilling operation underscores the necessity for enhancing
Cheolhwan Lee, Jongkook Kim, Namjoong Kim, Seil Ki, Jeonggyu Seo, Changhyup Park, Kathiravan Srinivasan   +6 more
wiley   +1 more source

UAV Group Distribution Route Optimization Under Time‐Varying Weather Network

International Journal of Intelligent Systems, Volume 2025, Issue 1, 2025.
The rapid advancement in unmanned aerial vehicle (UAV) technology has marked a transformative shift in various industries, with logistics distribution service being one of the prime sectors reaping the benefits. UAVs offer substantial benefits in speed, cost, and reach, promising to revolutionize logistics, especially in remote areas.
Wanchen Jie, Cheng Pei, Hong Yan, Weitong Lin, Said El Kafhali   +4 more
wiley   +1 more source

The Baryon Catastrophe and the multiphase intracluster medium [PDF]

Monthly Notices of the Royal Astronomical Society, 1996
We review the theories and observations which together have led to the concept of the Baryon Catastrophe: observations of the baryon fraction on the scale of clusters of galaxies appear to be at least three times as high as the universal baryon fraction predicted by the theory of primordial nucleosynthesis in a flat, $ _0 = 1$, universe.
Peter A. Thomas, F. Gunn Katherine
openaire   +3 more sources

Variability for Oil Content and Fatty Acid Composition in Diverse Accessions of Niger (Guizotia abyssinica L.f. Cass)

Journal of Food Quality, Volume 2025, Issue 1, 2025.
Niger is a minor oilseed crop primarily grown in Ethiopia and India. The oil content in niger seeds ranges from 32% to 47%. Niger oil has several nutritional and therapeutic benefits. Despite these benefits, the crop has been widely neglected by breeders due to its low productivity.
Pushpa H. D., Helan Baby Thomas, Sujatha M., Ramchander L., Sravanthi J., Rajani Bisen, Prashanth Jagtap, Rajkumar S., Sunil Gomashe, Mathur R. K., Praduman Yadav, Mohan Li   +11 more
wiley   +1 more source

Sunyaev-Zel'dovich polarization as a probe of the intracluster medium [PDF]

Monthly Notices of the Royal Astronomical Society, 2004
We present high-resolution hydrodynamical simulations of the degree and direction of polarisation imprinted on the CMB by the Sunyaev-Zel'dovich effect in the the line of sight to massive galaxy clusters. We focus on two contributions which contribute most of the induced CMB polarisation in addition to the intrinsic CMB quadrupole: the radiation ...
Joseph Silk, H. Mathis, Guilhem Lavaux, Guilhem Lavaux, Jose M. Diego   +4 more
openaire   +4 more sources

Investigating the Intracluster Medium Viscosity Using the Tails of GASP Jellyfish Galaxies

The Astrophysical Journal
The microphysics of the intracluster medium (ICM) in galaxy clusters is still poorly understood. Observational evidence suggests that the effective viscosity is suppressed by plasma instabilities that reduce the mean free path of particles. Measuring the
Alessandro Ignesti, Gianfranco Brunetti, Marco Gullieuszik, Nina Akerman, Antonino Marasco, Bianca M. Poggianti, Yuan Li, Benedetta Vulcani, Myriam Gitti, Alessia Moretti, Eric Giunchi, Neven Tomičić, Cecilia Bacchini, Rosita Paladino, Mario Radovich, Anna Wolter   +15 more
doaj   +1 more source

The Seeding of Cosmic Ray Electrons by Cluster Radio Galaxies: A Review

Galaxies
Radio galaxies in clusters of galaxies are a prominent reservoir of magnetic fields and of non-thermal particles, which become mixed with the intracluster medium.
Franco Vazza, Andrea Botteon
doaj   +1 more source

Magnetogenesis in a Collisionless Plasma: From Weibel Instability to Turbulent Dynamo

The Astrophysical Journal, 2023
We report on a first-principles numerical and theoretical study of plasma dynamo in a fully kinetic framework. By applying an external mechanical force to an initially unmagnetized plasma, we develop a self-consistent treatment of the generation of “seed”
Muni Zhou, Vladimir Zhdankin, Matthew W. Kunz, Nuno F. Loureiro, Dmitri A. Uzdensky   +4 more
doaj   +1 more source

Cluster magnetic fields through the study of polarized radio halos in the SKA era [PDF]

, 2014
Galaxy clusters are unique laboratories to investigate turbulent fluid motions and large scale magnetic fields. Synchrotron radio halos at the center of merging galaxy clusters provide the most spectacular and direct evidence of the presence of ...
Bernardi, G., Bonafede, A., Brunetti, G., Carretti, E., Colafrancesco, S., Donnert, J., Feretti, L., Ferrari, C., Giovannini, G., Gitti, M., Govoni, F., Iapichino, L., Johnston-Hollitt, M., Li, H., Murgia, M., Norman, M., Pizzo, R., Rudnick, L., Vacca, V., Xu, H.   +19 more
core   +2 more sources