Results 51 to 60 of about 15,246 (211)

SOLAR WIND INVESTIGATIONS BY OBSERVATIONS OF INTERPLANETARY SCINTILLATIONS OF COSMIC RADIO SOURCES AT DECAMETER WAVELENGTHS

open access: yesRadio Physics and Radio Astronomy, 2017
Purpose: Description of the solar wind investigation technique based on interplanetary scintillation observations of the decameter radio emission of space radio sources.
N. N. Kalinichenko   +7 more
doaj   +1 more source

Investigating the Magnetic Structure of Interplanetary Coronal Mass Ejections Using Simultaneous Multispacecraft In Situ Measurements

open access: yesThe Astrophysical Journal, 2023
In situ measurements from spacecraft typically provide a time series at a single location through coronal mass ejections (CMEs), and they have been one of the main methods to investigate CMEs.
F. Regnault   +7 more
doaj   +1 more source

The visual complexity of coronal mass ejections follows the solar cycle [PDF]

open access: yesSpace Weather, 2020
Abstract The Heliospheric Imagers on board National Aeronautics and Space Administration (NASA)'s twin STEREO spacecraft show that coronal mass ejections (CMEs) can be visually complex structures. To explore this complexity, we created a citizen science project with the U.K.
Jones, SR   +5 more
openaire   +4 more sources

Rotation of a Stealth CME on 2012 October 5 Observed in the Inner Heliosphere

open access: yesThe Astrophysical Journal, 2023
Coronal mass ejections (CMEs) are subject to changes in their direction of propagation, tilt, and other properties. This is because CMEs interact with the ambient solar wind and other large-scale magnetic field structures.
Sandeep Kumar   +5 more
doaj   +1 more source

Relationship of Coronal Mass Ejection Events with Solar Flares and coronal Holes [PDF]

open access: yesSymposium - International Astronomical Union, 1990
We present an analysis of the relationship between coronal mass ejection (CME) events with solar flares and coronal holes. Out of 79 CME events whose location and span are known, 10 CME event circles contain solar flares. On the other hand out of 71 CME events (selected for the study with coronal holes) 40 CME event circles contain coronal holes.
openaire   +1 more source

Machine Learning for Local Detection of Separators in Three‐Dimensional Magnetic Fields

open access: yesJournal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 3, June 2026.
Abstract Magnetic reconnection is a major plasma phenomenon occurring in various key environments ranging from the Sun and near‐Earth space to astrophysical plasmas. While magnetic reconnection is relatively well‐understood under two‐dimensional (2D) settings, it remains challenging to characterize in three‐dimensional (3D) magnetic fields.
Fanni Franssila   +5 more
wiley   +1 more source

Eruptions from solar ephemeral regions as an extension of the size distribution of coronal mass ejections

open access: yes, 2009
Observations of the quiet solar corona in the 171A (~1MK) passband of the Transition Region and Coronal Explorer (TRACE) often show disruptions of the coronal part of small-scale ephemeral bipolar regions that resemble the phenomena associated with ...
Aschwanden   +11 more
core   +1 more source

The heliospheric magnetic field over the Hale cycle [PDF]

open access: yes, 2008
The concept that open magnetic flux of the Sun (rooted with one and only one footpoint at the Sun) is a conserved quantity is taking root in the heliospheric community.
Crooker, N. U.   +2 more
core   +2 more sources

LEO‐DOS Absorbed Dose Observations During the May 2024 Geomagnetic Superstorm

open access: yesGeophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract The Low‐Earth Orbit Space Radiation Dosimeter (LEO‐DOS) onboard Next‐Generation Satellite II (NEXTSat‐2) measured absorbed dose rate variations during the May 2024 geomagnetic superstorm. The observations show deep storm‐time penetration of solar energetic particle (SEP) spanning L ≈ 2–10, a pronounced enhancement near L ≈ 3 consistent with ...
Jongil Jung   +11 more
wiley   +1 more source

Trajectories of coronal mass ejection from solar-type stars

open access: yesMonthly Notices of the Royal Astronomical Society, 2023
ABSTRACT The Sun and other solar-type stars have magnetic fields that permeate their interior and surface, extend through the interplanetary medium, and are the main drivers of stellar activity. Stellar magnetic activity affects the physical processes and conditions of the interplanetary medium and orbiting planets.
Fabian Menezes   +5 more
openaire   +2 more sources

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