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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

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10308 - Astronomy (including astrophysics,space science)

Result continuities

  • Project

  • 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

  • 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