Temporal Evolution of Magnetic Field and Intensity Properties of Photospheric Pores

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F16%3A00461296" target="_blank" >RIV/67985815:_____/16:00461296 - isvavai.cz</a>
Result on the web
—
DOI - Digital Object Identifier
—

Result language
angličtina
Original language name
Temporal Evolution of Magnetic Field and Intensity Properties of Photospheric Pores
Original language description
We describe conditions of pore formation in relation to the configuration and intensity of magnetic field, using observations of the SDO/HMI instrument. We analyze the temporal evolution of the area and brightness of the pores (time step 15 minutes), their statistics, and in parallel a time-sequence of the line-of-sight magnetic field intensity and its correlation with the area and brightness. We find that the pores become visible when their intensity decreases below 0.85 of the photospheric surrounding intensity and the magnetic field increases to 650 G in the HMI measurements. We determine the mean synodical rotational speed of the pores to be 14.44 /24 hours, which is 1 more than the tabular value. Positions of maximum magnetic field precede the positions of the pores in the direction of rotation for the positive polarity and lag behind it for the negative polarity.
Czech name
—
Czech description
—

Project
<a href="/en/project/GA14-04338S" target="_blank" >GA14-04338S: Physical nature of sunspots</a><br>
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

Article name in the collection
Ground-based solar observations in the space instrumentation ERA
ISBN
978-1-58381-892-3
ISSN
—
e-ISSN
—
Number of pages
5
Pages from-to
37-41
Publisher name
Astronomical Society of the Pacific
Place of publication
San Francisco
Event location
Coimbra
Event date
Oct 5, 2015
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000378098700005

Similar results(10)