Results 61 to 70 of about 15,397 (165)

The long-term variability of cosmic ray protons in the heliosphere: A modeling approach

Journal of Advanced Research, 2013
Galactic cosmic rays are charged particles created in our galaxy and beyond. They propagate through interstellar space to eventually reach the heliosphere and Earth. Their transport in the heliosphere is subjected to four modulation processes: diffusion,
M.S. Potgieter, N. Mwiinga, S.E.S. Ferreira, R. Manuel, D.C. Ndiitwani   +4 more
doaj   +1 more source

Collisionless Shocks as a Diagnostic Tool for Understanding Energetic Particle Transport in Space Plasmas

Frontiers in Astronomy and Space Sciences, 2020
We study the transport of energetic particles accelerated at three different shock events observed in the solar wind by the ACE spacecraft. We consider particle propagation for a quasi-parallel, an oblique, and a quasi-perpendicular shock.
Gaetano Zimbardo, Gaetano Zimbardo, Giuseppe Prete, Silvia Perri   +3 more
doaj   +1 more source

State of the Early Career Profession in Space Physics and Aeronomy: Climatological Survey Results

Journal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.
Abstract The American Geophysical Union (AGU) Space Physics & Aeronomy (SPA) section comprises scientists who study the Sun, solar wind, and planetary magnetospheres, ionospheres, and thermospheric/mesospheric systems along with their interconnections.
R. C. Allen, B. Gallardo‐Lacourt, S. Raptis, C. R. Gilly, L. C. Gasque, B. L. Alterman, J. C. Buitrago‐Casas, E. P. Macho, G. Malhotra, R. M. McGranaghan, P. Mostafavi, S. K. Vines   +11 more
wiley   +1 more source

Simulations of Coronal Mass Ejection Injection into the Inner Heliosphere with Displacement of the Heliospheric Magnetic Field

The Astrophysical Journal
Magnetohydrodynamic (MHD) simulations are a useful tool for understanding the propagation of coronal mass ejections (CMEs) in the inner heliosphere and their interaction with the background solar wind.
Elena Provornikova, Mark G. Linton, Kalman J. Knizhnik, Brian E. Wood, Viacheslav G. Merkin, Andrew J. McCubbin   +5 more
doaj   +1 more source

Space Weather and Solar Wind Studies with OWFA

, 2017
In this paper, we review the results of interplanetary scintillation (IPS) observations made with the legacy system of the Ooty Radio Telescope (ORT) and compare them with the possibilities opened by the upgraded ORT, the Ooty Wide Field Array (OWFA ...
Chengalur, J. N., Manoharan, P. K., Subrahmanya, C. R.   +2 more
core   +1 more source

Influence of Mars Topography on Radiation Dose Detected by the Mars Science Laboratory and Assessment of Mars Surface Albedo Radiation

Journal of Geophysical Research: Planets, Volume 131, Issue 4, April 2026.
Abstract The Radiation Assessment Detector (RAD) on the Curiosity rover has been characterizing the Martian surface radiation field since 2012. The dose observed by RAD is influenced by a variety of factors, including an essential one, the terrain. After parking near Murray Buttes in September 2016 where it first detected a ∼5% decrease in dose rate ...
Jingnan Guo, Changqi Tian, Gabin Charpentier, Robert F. Wimmer‐Schweingruber, Salman Khaksarighiri, Lu Pan, Jan Leo Löwe, Bent Ehresmann, Donald M. Hassler, Cary Zeitlin, Daniel Matthiä, Thomas Berger, Günther Reitz   +12 more
wiley   +1 more source

Heliospheric consequences of solar activity in geophysical and interplanetary phenomena

Geofísica Internacional, 2004
We have done an analysis of the total solar magnetic flux, polar coronal hole area and sunspots. We investigate their long term evolution over several solar cycles and their possible relationship with interplanetary shocks, sudden storm commencements at ...
J. F. Valdés Galicia, A. Lara, D. Maravilla   +2 more
doaj   +1 more source

Accelerated Knowledge Discovery: A Vision for NASA Science

Earth and Space Science, Volume 13, Issue 3, March 2026.
Abstract This paper introduces the sixth paradigm of scientific discovery: accelerated knowledge discovery (AKD). This paradigm is defined by the full integration of artificial intelligence (AI) into the research workflow as a tool augmenting cognitive capabilities of human scientists.
Rahul Ramachandran, Kaylin Bugbee, Juan Bernabe‐Moreno   +2 more
wiley   +1 more source

A Predicted Small and Round Heliosphere [PDF]

, 2018
The shape of the solar wind bubble within the interstellar medium, the so-called heliosphere, has been explored over six decades. As the Sun moves through the surrounding partially-ionized medium, neutral hydrogen atoms penetrate the heliosphere, and ...
Drake, James, Loeb, Abraham, Opher, Merav, Toth, Gabor   +3 more
core  

Three-dimensional Evolution of Solar Wind during Solar Cycles 22-24

, 2012
This paper presents the analysis of 3D evolution of solar wind density turbulence and speed at various levels of solar activity between solar cycles 22 and 24.
Abramenko, Basu, Coles, Kojima, Koutchmy, Lallement, Liu, Lo, Manoharan, Manoharan, Manoharan, Manoharan, Manoharan, Manoharan, Mewaldt, P. K. Manoharan, Readhead, Sheeley, Yashiro   +18 more
core   +1 more source