Imaging Evidence for Solar Wind Outflows Originating from a Coronal Mass Ejection Footpoint
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F21%3A00548295" target="_blank" >RIV/67985815:_____/21:00548295 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.3847/1538-4357/abc8f6" target="_blank" >https://doi.org/10.3847/1538-4357/abc8f6</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3847/1538-4357/abc8f6" target="_blank" >10.3847/1538-4357/abc8f6</a>
Alternative languages
Result language
angličtina
Original language name
Imaging Evidence for Solar Wind Outflows Originating from a Coronal Mass Ejection Footpoint
Original language description
We report on Atmospheric Imaging Assembly observations of plasma outflows originating in a coronal dimming during a 2015 April 28 filament eruption. After the filament started to erupt, two flare ribbons formed, one of which had a well-visible hook enclosing a core (twin) dimming region. Along multiple funnels located in this dimming, a motion of plasma directed outward started to be visible in the 171 and 193 A filter channels of the instrument. In time-distance diagrams, this motion generated a strip-like pattern, which lasted for more than 5 hr and whose characteristics did not change along the funnel. We therefore suggest the motion is a signature of outflows corresponding to velocities ranging between 70 and 140 km s(-1). Interestingly, the pattern of the outflows and their velocities were found to be similar to those we observed in a neighboring ordinary coronal hole. Therefore, the outflows were most likely a signature of a coronal mass ejection-induced solar wind flowing along the open-field structures rooted in the dimming region. Further, the evolution of the hook encircling the dimming region was examined in the context of the latest predictions imposed for 3D magnetic reconnection. The observations indicate that the filament's footpoints were, during their transformation to the dimming region, reconnecting with surrounding canopies. To our knowledge, our observations present the first imaging evidence for outflows of plasma from a dimming region.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
<a href="/en/project/GA20-07908S" target="_blank" >GA20-07908S: Three-dimensional magnetic reconnection in early phases of solar flares and eruptions: Observations and the Standard Model in 3D</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Astrophysical Journal
ISSN
0004-637X
e-ISSN
1538-4357
Volume of the periodical
909
Issue of the periodical within the volume
1
Country of publishing house
US - UNITED STATES
Number of pages
15
Pages from-to
62
UT code for WoS article
000605822400001
EID of the result in the Scopus database
2-s2.0-85099198576