Results 41 to 50 of about 7,879 (179)

Cosmogenic 10Be as a Tracer for Recent Heliospheric Encounters With Interstellar Cold Clouds and Nearby Supernovae

open access: yesGeophysical Research Letters, Volume 53, Issue 19, 16 October 2026.
Abstract Recent works suggest there are periods when the Sun encountered massive interstellar cold clouds which compressed the heliosphere to within Earth's orbit, exposing Earth to interstellar galactic cosmic rays and energetic particles of heliospheric origin.
Anna Nica   +4 more
wiley   +1 more source

3D pressure-corrected ballistic extrapolation of solar wind speed in the inner heliosphere

open access: yesJournal of Space Weather and Space Climate
Solar wind parameters at different locations in the inner heliosphere can be estimated using various solar wind extrapolation methods. The simple ballistic method extrapolates solar wind parameters from the point of measurement to a chosen heliospheric ...
Timar Aniko   +7 more
doaj   +1 more source

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

open access: yesFrontiers 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

Neural Surrogate HMC: On Using Neural Likelihoods for Hamiltonian Monte Carlo in Simulation‐Based Inference

open access: yesJournal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 5, October 2026.
Abstract Bayesian inference methods such as Markov Chain Monte Carlo (MCMC) typically require repeated computations of the likelihood function, but in some scenarios, this is infeasible and alternative methods are needed. Simulation‐based inference methods address this problem by using machine learning to amortize computations.
L. M. Wolniewicz, P. Sadowski, C. Corti
wiley   +1 more source

Heliosphere Lithograph [PDF]

open access: yes, 2008
This lithograph introduces users to the fact that the Solar System has an interstellar boundary called the heliosphere. It includes an interactive activity.
Lindsay Bartolone
core  

Type‐III Solar Radio Bursts at Mars: A 16.5‐Year Catalog From Mars Express‐MARSIS at 0.1–5.5 MHz

open access: yesSpace Weather, Volume 24, Issue 10, October 2026.
Abstract The most intense radio feature in the Solar System are the solar Type‐III radio bursts, which are associated with electron beams that propagate along open magnetic field lines. Although solar radio bursts have been studied since the 1940s, observations remain mainly restricted within 1 AU.
Beatriz Sánchez‐Cano   +22 more
wiley   +1 more source

Cosmic rays in the heliosphere [PDF]

open access: yes, 1987
The different types of cosmic ray particles and their role in the heliosphere are briefly described. The rates of various energetic particles were examined as a function of time and used to derive various differential energy gradients.
Webber, William R.
core  

Whole Heliosphere Interval: Overview of JD16

open access: yes, 2009
The Whole Heliosphere Interval is an international observing and modeling effort to characterize the three-dimensional interconnected solar-heliospheric-planetary system, i.e., the “heliophysical” system.
Barbara J. Thompson   +2 more
core   +1 more source

Signatures of Reconnection and a Split Heliospheric Tail in High-energy Energetic Neutral Atoms

open access: yesThe Astrophysical Journal
The shape of the heliosphere, regarded as comet-like since the 1960s, has recently been the subject of intense debate in the last decade. There is disagreement as to whether the heliospheric tail extends to ∼10,000 au in a comet-like shape or if it is ...
M. Kornbleuth   +12 more
doaj   +1 more source

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

open access: yesJournal 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   +4 more
doaj   +1 more source

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