Magnetic properties on the boundary of an evolving pore

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F21%3A00547945" target="_blank" >RIV/67985815:_____/21:00547945 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11320/21:10416520
Result on the web
<a href="https://doi.org/10.1051/0004-6361/202039661" target="_blank" >https://doi.org/10.1051/0004-6361/202039661</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1051/0004-6361/202039661" target="_blank" >10.1051/0004-6361/202039661</a>

Result language
angličtina
Original language name
Magnetic properties on the boundary of an evolving pore
Original language description
We aim to investigate the existence of a critical value of the vertical magnetic field on a pore boundary and its role in the evolution of the magnetic structure. We observe well-defined stages in the pore evolution: (1) during the initial formation phase, total magnetic field strength (B) and vertical magnetic field ( Bver) increase to their maximum values of similar to 1920G and similar to 1730 G, respectively (2) then the pore reaches a stable phase (3) in a second formation phase, the pore undergoes a rapid growth in terms of size, along with a decrease in B and Bver on its boundary. In the newly formed area of the pore, Bver remains mostly below 1731G and B remains everywhere below 1921 G (4) ultimately, pore decay starts. We find overall that pore areas with Bver < 1731 G, or equivalently B < 1921 G, disintegrate faster than regions that fulfil this criteria. We find that the most stable regions of the pore, similarly to the case of umbral boundaries, are defined by a critical value of the vertical component of the magnetic field that is comparable to that found in stable sunspots. In addition, in this case study, the same pore areas can be similarly well-defined by a critical value of the total magnetic field strength.
Czech name
—
Czech description
—

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)

Project
<a href="/en/project/GA18-06319S" target="_blank" >GA18-06319S: Evolution of sunspots and active regions</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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