Results 81 to 90 of about 10,278 (236)

Voyager 2 observation of the multifractal spectrum in the heliosphere and the heliosheath [PDF]

open access: yesNonlinear Processes in Geophysics, 2013
We look in detail at the multifractal scaling of the fluctuations in the interplanetary magnetic field strength as measured onboard Voyager 2 in the entire heliosphere and even in the heliosheath.
W. M. Macek, A. Wawrzaszek
doaj   +1 more source

Unraveling Super Equatorial Plasma Bubbles (EPBs) Evolution During the 23 April 2023 Storm: Multi‐Instrument Observations and GITM‐SAMI3 Simulation

open access: yesSpace Weather, Volume 24, Issue 4, April 2026.
Abstract Storm‐time equatorial plasma bubble (EPB) dynamics play a critical role in space weather impacts on communication and navigation systems, yet the mechanisms governing their formation and evolution under storm conditions remain poorly understood.
Shasha Zou   +6 more
wiley   +1 more source

Tentative Identification of Interstellar Dust in the Nose of the Heliosphere

open access: yes, 2005
Observations of the weak polarization of light from nearby stars, reported by Tinbergen (1982), are consistent with polarization by small, radius
Frisch, Priscilla C.
core   +1 more source

Post‐Processing Probabilistic Forecasts of the Solar Wind by Data Mining Similar Scenarios

open access: yesSpace Weather, Volume 24, Issue 4, April 2026.
Abstract The solar wind speed at Earth is one of the most important parameters regarding the effects of space weather on society. Thus far, most approaches for predicting the solar wind speed produce a single‐value time series without uncertainty, or utilize ensemble methods which require custom calibration development.
Daniel E. da Silva   +3 more
wiley   +1 more source

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

open access: yesJournal 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   +11 more
wiley   +1 more source

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

open access: yesJournal 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   +12 more
wiley   +1 more source

Density of neutral interstellar hydrogen at the termination shock from Ulysses pickup ion observations

open access: yes, 2008
By reevaluating a 13-month stretch of Ulysses SWICS H pickup ion measurements near 5 AU close to the ecliptic right after the previous solar minimum, this paper presents a determination of the neutral interstellar H density at the solar wind termination ...
Auchère   +82 more
core   +1 more source

Accelerated Knowledge Discovery: A Vision for NASA Science

open access: yesEarth 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   +2 more
wiley   +1 more source

Radial Evolution of Interplanetary Shock Properties with Heliospheric Distance: Observations from Parker Solar Probe

open access: yesThe Astrophysical Journal Letters
We present a comprehensive analysis of 66 interplanetary shocks observed by the Parker Solar Probe between 2018 November and 2024 January. Among these, 33 events fulfilled the Rankine–Hugoniot (R-H) conditions, ensuring reliable asymptotic plasma ...
Oksana Kruparova   +8 more
doaj   +1 more source

Observations of the gamma-ray emission from the Quiescent Sun with Fermi Large Area Telescope during the first 7 years in orbit

open access: yesEPJ Web of Conferences, 2017
The high energy gamma-ray emission from the quiescent Sun is due to the interactions of cosmic ray (CR) protons and electrons with matter and photons in the solar environment.
Rainó S.   +4 more
doaj   +1 more source

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