Results 91 to 100 of about 2,118 (212)

Validating a Non‐Conventional Method for Expansion of Coronal Mass Ejections (CMEs) and Investigating the Evolution of a CME Substructures Using Solar Orbiter and Wind Observations

open access: yesSpace Weather, Volume 24, Issue 5, May 2026.
Abstract We present a validation of our recently proposed non‐conventional method, Constant Acceleration Accounted Perspective (CAAP), for estimating the instantaneous expansion speed of coronal mass ejection (CMEs), even when only single‐point in situ observations are available. This validation is enabled by the radial alignment of Solar Orbiter (SolO)
Anjali Agarwal   +3 more
wiley   +1 more source

Solar Orbiter Exploring the Sun-Heliosphere Connection

open access: yes, 2012
The heliosphere represents a uniquely accessible domain of space, where fundamental physical processes common to solar, astrophysical and laboratory plasmas can be studied under conditions impossible to reproduce on Earth and unfeasible to observe from ...
Mueller, Daniel   +7 more
core   +1 more source

Space Weather Propagation in the Inner Heliosphere [PDF]

open access: yes, 2020
The inner region of our solar system is vast, spanning hundreds of millions of kilometers and is driven by dynamics ranging in time scales from less than seconds to more than centuries.
Petersen, Alicia
core  

Dust sputtering within the inner heliosphere: a modelling study [PDF]

open access: yes, 2020
The aim of this study is to investigate through modeling how sputtering by impacting solar wind ions influences the lifetime of dust particles in the inner heliosphere near the Sun. We consider three typical dust materials: silicate, Fe$_{0.4}$Mg$_{0.
Myrvang, Margaretha   +2 more
core   +1 more source

Coronal disturbances and their effects on the dynamics of the heliosphere [PDF]

open access: yes, 2019
The Sun blows out the solar wind which propagates into the interplanetary medium and forms the heliosphere about 100 AU across. The solar activity causes various types of time-dependent phenomena in the solar wind from long-lived corotating interaction ...
McNutt, Ralph   +6 more
core  

The Gradual Slowing of the Solar Wind in the Outer Heliosphere

open access: yesThe Astrophysical Journal
The solar wind gradually slows with increasing distance from the Sun as interstellar material becomes ionized and picked up by the solar wind. When observing the solar wind in the outer heliosphere, it is difficult to differentiate temporal decreases in ...
Heather A. Elliott   +17 more
doaj   +1 more source

Magnetic flux balance in the heliosphere

open access: yes, 2010
Understanding the evolution of magnetic flux in the heliosphere remains an unresolved issue. The current solar minimum between cycles 23 and 24 is anomalously long, which gives rare insight into the long-term evolution of heliospheric magnetic flux when ...
Schwadron, Nathan A.   +5 more
core   +1 more source

Toward Explaining Galactic Cosmic-Ray Modulation in a Dynamic Heliosheath: Transient Structures Seem Dominant and Magnetic Drifts Appear Reduced

open access: yesThe Astrophysical Journal
While traveling through the heliosheath (HS), Voyager 2 observed sustained flux depletions of galactic cosmic rays (GCRs) on scales of months to years.
J. G. Alonso Guzmán   +7 more
doaj   +1 more source

The Heliosphere Through the Solar Activity Cycle

open access: yes, 2006
Understanding how the Sun changes though its 11-year sunspot cycle and how these changes affect the vast space around the Sun the heliosphere has been one of the principal objectives of space research since the advent of the space age. This book presents
Balogh, A.   +2 more
core  

Probing the Turbulent Corona and Heliosphere Using Radio Spectral Imaging Observation during the Solar Conjunction of the Crab Nebula

open access: yesThe Astrophysical Journal
Measuring plasma parameters in the upper solar corona and inner heliosphere is challenging because of the region’s weakly emissive nature and inaccessibility for most in situ observations.
Peijin Zhang   +45 more
doaj   +1 more source

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