Reconstruction of a helical prominence in 3D from IRIS spectra and images
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F17%3A00482635" target="_blank" >RIV/67985815:_____/17:00482635 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1051/0004-6361/201730839" target="_blank" >http://dx.doi.org/10.1051/0004-6361/201730839</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1051/0004-6361/201730839" target="_blank" >10.1051/0004-6361/201730839</a>
Alternative languages
Result language
angličtina
Original language name
Reconstruction of a helical prominence in 3D from IRIS spectra and images
Original language description
Movies of prominences obtained by space instruments e.g. the Solar Optical Telescope (SOT) aboard the Hinode satellite and the Interface Region Imaging Spectrograph (IRIS) with high temporal and spatial resolution revealed the tremendous dynamical nature of prominences. Knots of plasma belonging to prominences appear to travel along both vertical and horizontal thread-like loops, with highly dynamical nature. Aims. The aim of the paper is to reconstruct the 3D shape of a helical prominence observed over two and a half hours by IRIS. From the IRIS Mg II k spectra we compute Doppler shifts of the plasma inside the prominence and from the slit-jaw images (SJI) we derive the transverse field in the plane of the sky. Finally we obtain the velocity vector field of the knots in 3D. We reconstruct the real trajectories of nine knots travelling along ellipses. The spiral-like structure of the prominence observed in the plane of the sky is mainly due to the projection effect of long arches of threads (up to 8 x 10(4) km). Knots run along more or less horizontal threads with velocities reaching 65 km s(-1). The dominant driving force is the gas pressure.n
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
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Astronomy & Astrophysics
ISSN
1432-0746
e-ISSN
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Volume of the periodical
606
Issue of the periodical within the volume
October
Country of publishing house
FR - FRANCE
Number of pages
13
Pages from-to
"A30/1"-"A30/13"
UT code for WoS article
000412875700005
EID of the result in the Scopus database
2-s2.0-85030641212