Horizontal flow fields in and around a small active region The transition period between flux emergence and decay

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F16%3A00470643" target="_blank" >RIV/67985815:_____/16:00470643 - isvavai.cz</a>

Alternative codes found

RIV/67985815:_____/16:00488883

Result on the web

<a href="http://dx.doi.org/10.1051/0004-6361/201628380" target="_blank" >http://dx.doi.org/10.1051/0004-6361/201628380</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/0004-6361/201628380" target="_blank" >10.1051/0004-6361/201628380</a>

Result language

angličtina

Original language name

Horizontal flow fields in and around a small active region The transition period between flux emergence and decay

Original language description

Combining high-resolution and synoptic observations aims to provide a comprehensive description of flux emergence at photospheric level and of the growth process that eventually leads to a mature active region. The computed growth rates for photometric area, magnetic area, and magnetic flux are about twice as high as the respective decay rates. The space-time diagram using HMI magnetograms of five days provides a comprehensive view of growth and decay. It traces a leaf-like structure, which is determined by the initial separation of the two polarities, a rapid expansion phase, a time when the spread stalls, and a period when the region slowly shrinks again. The separation rate of 0.26 km s(-1) is highest in the initial stage, and it decreases when the separation comes to a halt. Horizontal plasma velocities computed at four evolutionary stages indicate a changing pattern of inflows. In LCT maps we find persistent flow patterns such as outward motions in the outer part of the two major pores, a diverging feature near the trailing pore marking the site of upwelling plasma and flux emergence, and low velocities in the interior of dark pores. We detected many elongated rapidly expanding granules between the two major polarities, with dimensions twice as large as the normal granules.n

Czech name

—

Czech description

—

Type

J_imp - 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)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

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

Name of the periodical

Astronomy & Astrophysics

ISSN

1432-0746

e-ISSN

—

Volume of the periodical

596

Issue of the periodical within the volume

December

Country of publishing house

FR - FRANCE

Number of pages

12

Pages from-to

"A3/1"-"A3/12"

UT code for WoS article

000390797900035

EID of the result in the Scopus database

2-s2.0-84999810244