Signature and escape of highly fractionated plasma in an active region

@article{Brooks2021SignatureAE,
  title={Signature and escape of highly fractionated plasma in an active region},
  author={David H Brooks and Stephanie L Yardley},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2021}
}
  • David H Brooks, S. Yardley
  • Published 23 September 2021
  • Physics
  • Monthly Notices of the Royal Astronomical Society
Accurate forecasting of space weather requires knowledge of the source regions where solar energetic particles (SEP) and eruptive events originate. Recent work has linked several major SEP events in 2014, January, to specific features in the host active region (AR 11944). In particular, plasma composition measurements in and around the footpoints of hot, coronal loops in the core of the active region were able to explain the values later measured in situ by the Wind spacecraft. Due to… Expand

References

SHOWING 1-10 OF 57 REFERENCES
The source of the major solar energetic particle events from super active region 11944
TLDR
This work uses multi-messenger observations from the Heliophysics System Observatory to identify plasma confined at the footpoints of the hot, core loops of active region 11944 as the source of major gradual SEP events in January 2014 and shows that the elemental composition signature detected spectroscopically at theFootpoints explains the measurements made by particle counting techniques near Earth. Expand
SOLAR SOURCES OF IMPULSIVE SOLAR ENERGETIC PARTICLE EVENTS AND THEIR MAGNETIC FIELD CONNECTION TO THE EARTH
This paper investigates the solar origin of impulsive solar energetic particle (SEP) events, often referred to as 3He-rich flares, by attempting to locate the source regions of 117 events as observedExpand
Continuous Plasma Outflows from the Edge of a Solar Active Region as a Possible Source of Solar Wind
TLDR
Hinode X-ray Telescope observations of a solar active region report a pattern of continuous outflow of soft-x-ray–emitting plasmas emanating along apparently open magnetic field lines and into the upper corona that may be indicative of one of the solar wind sources at the Sun. Expand
OUTFLOWS AT THE EDGES OF ACTIVE REGIONS : CONTRIBUTION TO SOLAR WIND FORMATION?
The formation of the slow solar wind has been debated for many years. In this Letter we show evidence of persistent outflow at the edges of an active region as measured by the EUV ImagingExpand
The active region source of a type III radio storm observed by Parker Solar Probe during encounter 2
Context. To investigate the source of a type III radio burst storm during encounter 2 of NASA's Parker Solar Probe (PSP) mission. Aims. It was observed that in encounter 2 of NASA's Parker SolarExpand
Full-Sun observations for identifying the source of the slow solar wind
TLDR
This map provides a full-Sun observation that combines three key ingredients for identifying the sources: velocity, plasma composition and magnetic topology and shows them as solar wind composition plasma outflowing on open magnetic field lines. Expand
ESTABLISHING A CONNECTION BETWEEN ACTIVE REGION OUTFLOWS AND THE SOLAR WIND: ABUNDANCE MEASUREMENTS WITH EIS/HINODE
One of the most interesting discoveries from Hinode is the presence of persistent high-temperature high-speed outflows from the edges of active regions (ARs). EUV imaging spectrometer (EIS)Expand
Composition of quasi‐stationary solar wind flows from Ulysses/Solar Wind Ion Composition Spectrometer
Using improved, self-consistent analysis techniques, we determine the average solar wind charge state and elemental composition of nearly 40 ion species of He, C, N, O, Ne, Mg, Si, S, and Fe observedExpand
Simulating the Coronal Evolution of Bipolar Active Regions to Investigate the Formation of Flux Ropes
The coronal magnetic field evolution of 20 bipolar active regions (ARs) is simulated from their emergence to decay using the time-dependent nonlinear force-free field method of Mackay, Green, and vanExpand
Coronal Holes, Jets, and the Origin of 3He-rich Particle Events
Using magnetograph measurements, coronal field extrapolations, and imaging observations, we investigate the solar origins of 25 3He-rich particle events from the period 1997-2003. In essentiallyExpand
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