Results 1 to 10 of about 15,259 (169)

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

open access: yesThe Astrophysical Journal, 2018
Heliospheric modulation conditions were unusually quite during the last solar minimum activity between Solar Cycles 23/24. Fortunately, the PAMELA space-experiment measured six-month averaged Galactic positron spectra for the period July 2006 to December
Aslam, O. P. M.   +4 more
core   +6 more sources

EUHFORIA: European heliospheric forecasting information asset [PDF]

open access: yesJournal of Space Weather and Space Climate, 2018
The implementation and first results of the new space weather forecasting-targeted inner heliosphere model “European heliospheric forecasting information asset” (EUHFORIA) are presented.
Pomoell Jens, Poedts S.
doaj   +3 more sources

Exploring Numerical Correlations: Models and Thermodynamic Kappa [PDF]

open access: yesEntropy
McComas et al. (2025) introduced a numerical experiment, where ordinary uncorrelated collisions between collision pairs are followed by other, controlled (correlated) collisions, shedding light on the emergence of kappa distributions through particle ...
Nicholas V. Sarlis   +2 more
doaj   +2 more sources

Solar wind with Hydrogen Ion charge Exchange and Large-Scale Dynamics (SHIELD) DRIVE Science Center

open access: yesFrontiers in Astronomy and Space Sciences, 2023
Most stars generate winds and move through the interstellar medium that surrounds them. This movement creates a cocoon formed by the deflection of these winds that envelops and protects the stars. We call these “cocoons” astrospheres. The Sun has its own
Merav Opher   +48 more
doaj   +1 more source

Global insight into a complex-structured heliosphere based on the local multi-point analysis

open access: yesFrontiers in Astronomy and Space Sciences, 2023
From 29 January to 7 February 2022, the heliosphere was structured with large-scale interacting substructures that appeared with significant dissimilarities at distant observations separated longitudinally by ∼34°.
Sanchita Pal   +9 more
doaj   +1 more source

Manifestation of solar wind corotating interaction regions in GCR intensity variations

open access: yesSolar-Terrestrial Physics, 2023
The regions of interaction between solar wind streams of different speed, known as corotating interaction regions, form an almost constantly existing structure of the inner heliosphere.
Krainev M. B.   +9 more
doaj   +1 more source

Numerical modeling of solar wind and coronal mass ejection in the inner heliosphere: A review

open access: yesFrontiers in Astronomy and Space Sciences, 2023
The predictions of plasma parameters in the interplanetary medium are the core of space weather forecasts, and the magnetohydrodynamics (MHD) numerical simulation is an important tool in the prediction of plasma parameters.
Man Zhang   +12 more
doaj   +1 more source

Filtration of Interstellar Neutral Helium by Elastic and Charge Exchange Collisions in Heliospheric Boundaries

open access: yesThe Astrophysical Journal, 2023
Interstellar neutral (ISN) helium atoms penetrating the heliosphere are used to find the flow velocity and temperature of the very local interstellar medium near the heliosphere.
P. Swaczyna   +3 more
doaj   +1 more source

About Cosmic Ray Modulation in the Heliosphere

open access: yesUniverse, 2022
Cosmic ray fluxes in the heliosphere are modulated by solar wind with an embedded solar interplanetary magnetic field. The solar activity changes with a period of ~11 year, and this is the main reason for the observed 11-year variations of cosmic ray ...
Yuri Stozhkov   +2 more
doaj   +1 more source

On the Contribution of Coronal Mass Ejections to the Heliospheric Magnetic Flux Budget on Different Time Scales

open access: yesThe Astrophysical Journal, 2023
Coronal mass ejections (CMEs) contribute closed magnetic flux to the heliosphere while they are connected at both ends to the Sun and play a key role in adding magnetic flux to the heliosphere.
Réka M. Winslow   +4 more
doaj   +1 more source

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