A new type of small-scale downflow patches in sunspot penumbrae

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F10%3A00350115" target="_blank" >RIV/67985815:_____/10:00350115 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

A new type of small-scale downflow patches in sunspot penumbrae

Original language description

Using the Hinode spectro-polarimetric observations of Fe I 630 nm lines and their inversions, we found photospheric downflows in the sunspot penumbra that have the same magnetic polarity as the sunspot umbra. The Stokes profiles seen in the patches are characterized as humps or enhancements on the red wing of the Stokes V profiles. Probably owing to the small size, such downflow patches have not been previously reported in penumbrae. These downflows are not related to the Evershed flow. They are mostlyfound inside the bright penumbral filaments and in the disk-center side penumbra in our data. We also found that some of the downflow patches are temporally and spatially coincident with chromospheric brightenings in the Ca II H images.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BN - Astronomy and celestial mechanics, astrophysics

OECD FORD branch

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Project

<a href="/en/project/IAA300030808" target="_blank" >IAA300030808: Interaction of moving plasma with magnetic fields in the solar photosphere</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2010

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Astronomy and Astrophysics

ISSN

0004-6361

e-ISSN

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Volume of the periodical

524

Issue of the periodical within the volume

December

Country of publishing house

FR - FRANCE

Number of pages

9

Pages from-to

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UT code for WoS article

000284625300018

EID of the result in the Scopus database

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