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Orphan penumbrae: Submerging horizontal fields

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F14%3A00429420" target="_blank" >RIV/67985815:_____/14:00429420 - isvavai.cz</a>

  • Result on the web

    <a href="http://dx.doi.org/10.1051/0004-6361/201322340" target="_blank" >http://dx.doi.org/10.1051/0004-6361/201322340</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1051/0004-6361/201322340" target="_blank" >10.1051/0004-6361/201322340</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Orphan penumbrae: Submerging horizontal fields

  • Original language description

    We investigate the properties of orphan penumbrae, which are photospheric filamentary structures observed in active regions near polarity inversion lines that resemble the penumbra of regular sunspots but are not connected to any umbra. Orphan penumbraeform between regions of opposite polarity in places with horizontal magnetic fields. Their magnetic configuration is that of Omega-shaped flux ropes. In the two cases studied here, the opposite-polarity regions approach each other with time and the wholestructure submerges as the penumbral filaments disappear. Orphan penumbrae are very similar to regular penumbrae, including the existence of strong gas flows. Therefore, they could have a similar origin. The main difference between them is the absence of a "background" magnetic field in orphan penumbrae. This could explain most of the observed differences. The fast flows we detect in orphan penumbrae may be caused by the siphon flow mechanism. Based on the similarities between orphan an

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    BN - Astronomy and celestial mechanics, astrophysics

  • OECD FORD branch

Result continuities

  • Project

    <a href="/en/project/GAP209%2F12%2F0287" target="_blank" >GAP209/12/0287: Spectropolarimetric analysis of solar photosphere</a><br>

  • Continuities

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2014

  • 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

    0004-6361

  • e-ISSN

  • Volume of the periodical

    564

  • Issue of the periodical within the volume

    April

  • Country of publishing house

    FR - FRANCE

  • Number of pages

    15

  • Pages from-to

    "A91/1"-"A91/15"

  • UT code for WoS article

    000334671000091

  • EID of the result in the Scopus database