Solar magnetism in the polar regions
GJD Petrie - Living Reviews in Solar Physics, 2015 - Springer
This review describes observations of the polar magnetic fields, models for the cyclical
formation and decay of these fields, and evidence of their great influence in the solar …
formation and decay of these fields, and evidence of their great influence in the solar …
The SPoCA-suite: Software for extraction, characterization, and tracking of active regions and coronal holes on EUV images
Context. Precise localization and characterization of active regions (AR) and coronal holes
(CH) as observed by extreme ultra violet (EUV) imagers are crucial for a wide range of solar …
(CH) as observed by extreme ultra violet (EUV) imagers are crucial for a wide range of solar …
Comparing solar minimum 23/24 with historical solar wind records at 1 AU
Based on the variations of sunspot numbers, we choose a 1-year interval at each solar
minimum from the beginning of the acquisition of solar wind measurements in the ecliptic …
minimum from the beginning of the acquisition of solar wind measurements in the ecliptic …
On the weakening of the polar magnetic fields during solar cycle 23
YM Wang, E Robbrecht, NR Sheeley - The Astrophysical Journal, 2009 - iopscience.iop.org
The Sun's polar fields are currently∼ 40% weaker than they were during the previous three
sunspot minima. This weakening has been accompanied by a corresponding decrease in …
sunspot minima. This weakening has been accompanied by a corresponding decrease in …
The whole heliosphere interval in the context of a long and structured solar minimum: An overview from Sun to Earth
Throughout months of extremely low solar activity during the recent extended solar-cycle
minimum, structural evolution continued to be observed from the Sun through the solar wind …
minimum, structural evolution continued to be observed from the Sun through the solar wind …
Lessons learned from predictions of Solar Cycle 24
WD Pesnell - Journal of Space Weather and Space Climate, 2020 - swsc-journal.org
Solar Cycle 24 has almost faded and the activity of Solar Cycle 25 is appearing. We have
learned much about predicting solar activity in Solar Cycle 24, especially with the data …
learned much about predicting solar activity in Solar Cycle 24, especially with the data …
Evolution of coronal holes and implications for high-speed solar wind during the minimum between cycles 23 and 24
G de Toma - Solar Physics, 2011 - Springer
We analyze coronal holes present on the Sun during the extended minimum between
Cycles 23 and 24, study their evolution, examine the consequences for the solar wind speed …
Cycles 23 and 24, study their evolution, examine the consequences for the solar wind speed …
Global MHD modeling of the solar corona and inner heliosphere for the whole heliosphere interval
In an effort to understand the three-dimensional structure of the solar corona and inner
heliosphere during the Whole Heliosphere Interval (WHI), we have developed a global …
heliosphere during the Whole Heliosphere Interval (WHI), we have developed a global …
Magnetic storms during the space age: Occurrence and relation to varying solar activity
We study the occurrence of magnetic storms in space age (1957–2021) using Dst and Dxt
indices. We find 2,526/2,743 magnetic storms in the Dxt/Dst index, out of which 45% are …
indices. We find 2,526/2,743 magnetic storms in the Dxt/Dst index, out of which 45% are …
If the Sun is so quiet, why is the Earth ringing? A comparison of two solar minimum intervals
SE Gibson, JU Kozyra, G de Toma… - Journal of …, 2009 - Wiley Online Library
Observations from the recent Whole Heliosphere Interval (WHI) solar minimum campaign
are compared to last cycle's Whole Sun Month (WSM) to demonstrate that sunspot numbers …
are compared to last cycle's Whole Sun Month (WSM) to demonstrate that sunspot numbers …