Results 31 to 40 of about 3,042 (156)
, 1998 The recent advent of ultra-short pulse, high-intensity lasers, together with advances in other novel technologies, such as high-gradient radiofrequency photoinjectors, have afforded researchers the possibility to simulate astrophysical conditions in the ...
F. Hartemann +7 more
semanticscholar +1 more source
Laboratory laser acceleration and high energy astrophysics: (gamma)-ray bursts and cosmic rays
, 1998 Recent experimental progress in laser acceleration of charged particles (electrons) and its associated processes has shown that intense electromagnetic pulses can promptly accelerate charged particles to high energies and that their energy spectrum is ...
T. Tajima, Y. Takahashi
semanticscholar +1 more source
Alternative Approaches for Estimating Highest‐Density Regions
International Statistical Review, EarlyView.Summary Among the variety of statistical intervals, highest‐density regions (HDRs) stand out for their ability to effectively summarise a distribution or sample, unveiling its distinctive and salient features. An HDR represents the minimum size set that satisfies a certain probability coverage, and current methods for their computation require ...
Nina Deliu, Brunero Liseo
wiley +1 more source
Political Psychology, EarlyView.Abstract The “integration paradox” posits that seemingly well‐established immigrants and their descendants tend to report more discrimination compared to their more marginalized peers. This study investigates one potential mechanism for this paradox, namely, the increasing awareness of their group's enduring ethno‐racial minority status.
Merlin Schaeffer, Judith Kas
wiley +1 more source
The Eddy Flux Transport of the Magnetohydrodynamic Quasi‐Geostrophic Disturbances
Geophysical Research Letters, Volume 52, Issue 7, 16 April 2025.Abstract The classic Eliassen‐Palm (E‐P) flux in the geophysical fluid dynamics is a vector to qualify the eddy momentum and heat flux transport by Rossby waves in the latitude‐height plane. In this investigation, we derive two magnetic E‐P fluxes to quantify the eddy energy transport by magnetic Rossby waves by using magnetohydrodynamic quasi ...
Chengkang Li, Yaokun Li
wiley +1 more source
Engineering Reports, Volume 7, Issue 4, April 2025.This study investigated the dissipative effects on time‐dependent Casson nanofluid motion over a cone, considering variable heat source/absorption and higher‐order reacting species. Water ethylene glycol was employed as the Casson base fluid. The proposed model has broad applicability across various scientific, engineering, and technological domains ...
L. Joseph Sademaki +2 more
wiley +1 more source
CANGAROO Project for High-Energy Gamma-Ray Astrophysics
, 2003 Astrophyisical motivations, recent status and results from the international CANGAROO project in Woomera, South Australia are described. Since 1990, with ground-based gamma-ray telecopes using the imaging Cherenkov technique, we are exploring the ...
Masaki Mori
semanticscholar +1 more source
Water Vapor Spectroscopy and Thermodynamics Constrain Earth's Tropopause Temperature
AGU Advances, Volume 6, Issue 2, April 2025.Abstract As Earth warms, the tropopause is expected to rise, but predictions of its temperature change are less certain. Longstanding theories employing “gray” radiation tie the tropopause temperature to outgoing longwave radiation (OLR), but this is in contrast to recent work in which simulations exhibit a Fixed Tropopause Temperature (FiTT) even as ...
Brett A. McKim +3 more
wiley +1 more source
Study of shock waves and related phenomena motivated by astrophysics
, 2016 This paper discusses the recent research in High-Energy-Density Physics at our Center. Our work in complex hydrodynamics is now focused on mode coupling in the Richtmyer- Meshkov process and on the supersonic Kelvin-Helmholtz instability. These processes
R. P. Drake +13 more
semanticscholar +1 more source
The Need for Better Monitoring of Climate Change in the Middle and Upper Atmosphere
AGU Advances, Volume 6, Issue 2, April 2025.Abstract Anthropogenic greenhouse gas emissions significantly impact the middle and upper atmosphere. They cause cooling and thermal shrinking and affect the atmospheric structure. Atmospheric contraction results in changes in key atmospheric features, such as the stratopause height or the peak ionospheric electron density, and also results in reduced ...
Juan A. Añel +13 more
wiley +1 more source