Results 81 to 90 of about 205 (182)
Frontiers in Astronomy and Space Sciences, 2018 We present a three-dimensional numerical model for the generation and evolution of the magnetic field in the solar convection zone, in which sunspots are produced and contribute to the cyclic reversal of the large-scale magnetic field. We then assess the
Rohit Kumar +3 more
doaj +1 more source
Can XMM‐Newton Be Used to Track Compositional Changes in the Solar Wind?
Journal of Geophysical Research: Space Physics, Volume 129, Issue 12, December 2024.Abstract Geocoronal Solar Wind Charge Exchange (SWCX) is the process by which heavy ions from the solar wind undergo charge exchange with neutral hydrogen atoms from the Earth's exosphere, releasing photons at discrete energies characteristic of the solar wind ions. This paper investigates the solar wind types driving geocoronal SWCX.
S. Nitti +6 more
wiley +1 more source
Location of Geomagnetic Disturbances in Relation to the Field Aligned Current Boundary
Journal of Geophysical Research: Space Physics, Volume 129, Issue 10, October 2024.Abstract Geomagnetic disturbances (GMDs) are rapid fluctuations in the strength and direction of the magnetic field near the surface of the Earth which can cause electric currents to be induced in the ground. The geomagnetically induced currents (GICs) can cause damage to pipelines and power grids.
G. E. Bower +5 more
wiley +1 more source
A Drag-force Analysis of Solar Wind White-light Tracers in the Inner Heliosphere
The Astrophysical JournalWe studied the propagation of blobs, which are a subset of density mesoscale structures observed in the solar corona. The detection of blobs in white-light data was performed during Solar Cycle 23.
Cynthia López-Portela +2 more
doaj +1 more source
The Astrophysical JournalWe present an analysis of Wide-field Imager for Solar PRobe (WISPR) images of the near-Sun heliospheric current sheet (HCS) region from the Parker Solar Probe (PSP) in 2020 January and June.
Paulett C. Liewer +5 more
doaj +1 more source
Radio Signature of the Strong Compression between a Streamer and a Coronal Hole Boundary
The Astrophysical Journal LettersWe present evidence of the first detection of the radio signature at metric wavelengths of the strong compression between a helmet streamer (HS) and the boundary of a coronal hole (CH) using radio observations from the Callisto MEXICO-LANCE and ALASKA ...
E. Aguilar-Rodriguez +10 more
doaj +1 more source
The Astrophysical JournalThe large-scale plasma density structure of the extended solar corona is a tracer of the underlying magnetic field configuration and dictates the structure of the solar wind in interplanetary space.
Liam T. Edwards +3 more
doaj +1 more source
The solar wind heavy ion composition in the ascending phases of the solar cycles 23 and 25
Frontiers in Astronomy and Space SciencesThe approximately 11-year solar cycle has been shown to impact the heavy ion composition of the solar wind, even when accounting for streams of differing speeds; however, the heavy ion composition observed between the same specific phases of a past solar
D. T. Carpenter +8 more
doaj +1 more source
Imaging the Solar Corona from “Within”: A Cutting-edge Approach to Enhance PSP/WISPR Imagery
The Astrophysical Journal Supplement SeriesThe unprecedented remote-sensing observations obtained by the Wide Field Imager for Solar Probe (WISPR) on board the Parker Solar Probe (PSP) from distances inside Mercury’s orbit are revolutionizing our perception of the fine-scale morphology and ...
Guillermo Stenborg +2 more
doaj +1 more source
Inertial-range Turbulence Anisotropy of the Young Solar Wind from Different Source Regions
The Astrophysical Journal LettersWe investigate the wavevector and variance anisotropies in the inertial range of the young solar wind observed by the Parker Solar Probe (PSP). Using the first 19 encounters of PSP measurements, we identify the young solar wind from different source ...
Wenshuai Cheng +6 more
doaj +1 more source