Results 41 to 50 of about 5,692 (228)

Modeling of Heliospheric Modulation of Cosmic-Ray Positrons in a Very Quiet Heliosphere [PDF]

The Astrophysical Journal, 2019
13 Pages, 12 figures, Submitted to Astrophysical ...
O. P. M. Aslam, D. Bisschoff, M. S. Potgieter, M. Boezio, R. Munini   +4 more
openaire   +3 more sources

Dynamical age of solar wind turbulence in the outer heliosphere

, 1998
In an evolving turbulent medium, a natural timescale can be defined in terms of the energy decay time. The time evolution may be complicated by other effects such as energy supply due to driving, and spatial inhomogeneity.
Matthaeus, William H., Oughton, Sean, William H. Matthaeus, Smith, Charles W., Charles W. Smith, Sean Oughton   +5 more
core   +1 more source

Reconstruction of the Parker spiral with the Reverse In situ data and MHD APproach – RIMAP

Journal of Space Weather and Space Climate, 2021
The reconstruction of plasma parameters in the interplanetary medium is very important to understand the interplanetary propagation of solar eruptions and for Space Weather application purposes.
Biondo Ruggero, Bemporad Alessandro, Mignone Andrea, Reale Fabio   +3 more
doaj   +1 more source

The dynamic heliosphere, solar activity, and cosmic rays

, 2010
This brief review addresses the relation between solar activity, cosmic ray variations and the dynamics of the heliosphere. The global features of the heliosphere influence what happens inside its boundaries on a variety of time-scales.
Potgieter, Marius S.
core   +1 more source

Impact of Inner Heliospheric Boundary Conditions on Solar Wind Predictions at Earth

Space Weather, 2021
Predictions of the physical parameters of the solar wind at Earth are at the core of operational space weather forecasts. Such predictions typically use line‐of‐sight observations of the photospheric magnetic field to drive a heliospheric model.
Siegfried Gonzi, M. Weinzierl, F.‐X. Bocquet, M. M. Bisi, D. Odstrcil, B. V. Jackson, A. R. Yeates, D. R. Jackson, C. J. Henney, C. Nick Arge   +9 more
doaj   +1 more source

Plasma Stability in Turbulent Magnetic Flux Ropes Downstream of a Collisionless Shock

Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract How pre‐existing solar wind turbulence, and coherent structures such as magnetic flux ropes within it, influence the transition of plasma across a shock is still poorly understood. Recently, in situ observations from the Earth's magnetosheath have been used to study plasma stability against ion kinetic instabilities. In the turbulent flow, the
L. Vuorinen, D. Burgess, F. Koller, D. Trotta   +3 more
wiley   +1 more source

Characterization of Dust in Saturn's Rings Using Cassini Spacecraft Data

Journal of Geophysical Research: Planets, Volume 131, Issue 6, June 2026.
Abstract The dust distribution in Saturn's rings is investigated using dust impacts registered by the Radio and Plasma Wave Science (RPWS) instrument onboard the Cassini spacecraft. Dust impacts, recorded as spiky signals in electric field waveforms, are used to determine profiles of impact rates and amplitudes of spikes during individual equatorial ...
L. Nouzák, S. Ijaz, D. Píša, J. Pavlů, J. Vaverka, F. Němec, J. Šafránková, Z. Němeček   +7 more
wiley   +1 more source

A future interstellar probe on the dynamic heliosphere and its interaction with the very local interstellar medium: In-situ particle and fields measurements and remotely sensed ENAs

Frontiers in Astronomy and Space Sciences, 2023
The recently published Interstellar Probe (ISP) study report describes a pragmatic mission concept with a launch window that starts in 2036 and is expected to reach several hundreds of astronomical units past the heliopause within a time frame of ≥50 ...
K. Dialynas, V. J. Sterken, P. C. Brandt, L. Burlaga, D. B. Berdichevsky, D. B. Berdichevsky, R. B. Decker, S. Della Torre, R. DeMajistre, A. Galli, M. Gkioulidou, M. E. Hill, S. M. Krimigis, S. M. Krimigis, M. Kornbleuth, W. Kurth, B. Lavraud, R. McNutt, D. G. Mitchell, P. S. Mostafavi, R. Nikoukar, M. Opher, E. Provornikova, E. C. Roelof, P. G. Rancoita, J. D. Richardson, E. Roussos, J. M. Sokół, G. La Vacca, J. Westlake, T. Y. Chen   +30 more
doaj   +1 more source

Comparing Solar Structure Detection Methods in SDO/AIA Observations and the Application to Raw Uncalibrated Data

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 3, June 2026.
Abstract Recent advances in solar physics increasingly rely on automated identification of coronal structures using machine learning. Yet most studies emphasize scientific performance without evaluating feasibility for onboard deployment to prioritize downlink observations.
P. Gonidakis, F. Carella, E. Dineva, H‐J. Jeong, P. Antunes, A. Podobas, S. Raptis, V. Toy‐Edens, M. Jin, S. Poedts, J. Magdalenic, G. Miloshevich   +11 more
wiley   +1 more source

SQUARE2: Spacecraft in QUAdrature for Solar Exploration—A Mission Concept for Synergetic Observations of the Sun and Heliosphere

Frontiers in Astronomy and Space Sciences, 2022
SQUARE2 is the acronym for Spacecraft in QUAdrature for solaR Exploration, and is a mission concept for multi-instrumental two-point observations of the Sun and its environment. It stems from the need to have two probes that are systematically in orbital
D. Telloni
doaj   +1 more source