Pregled bibliografske jedinice broj: 882262
An application of the random walk model to proper motions of coronal bright points from SDO data
An application of the random walk model to proper motions of coronal bright points from SDO data // Central European astrophysical bulletin, 40 (2016), 1; 23-28 (podatak o recenziji nije dostupan, članak, znanstveni)
CROSBI ID: 882262 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
An application of the random walk model to proper motions of coronal bright points from SDO data
Autori
Skokić, Ivica ; Sudar, Davor ; Saar, S. H. ; Brajša, Roman ; Poljančić Beljan, Ivana
Izvornik
Central European astrophysical bulletin (1845-8319) 40
(2016), 1;
23-28
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
Sun - coronal bright points - random walk - diffusion coefficient - SDO/AIA
Sažetak
Atmospheric Imaging Assembly (AIA) images from the Solar Dynamics Observatory (SDO) were used to follow the motions of coronal bright points (CBPs) in the period 1 January - 19 May 2011 with a cadence of 10 minutes. This resulted in a data set of 80966 CBPs with measured lifetimes and mean velocities which were used in a random walk model to calculate the diffusion coefficient, D. The results show that D has a value of ≈260 km^2/s for CBPs with lifetime below 6 hours, decreasing to ≈170 km^2/s for lifetimes above 12 hours, with a mean value of ≈230 km^2/s.
Izvorni jezik
Engleski
Znanstvena područja
Fizika
POVEZANOST RADA
Projekti:
HRZZ-IP-2013-11-6212 - Promjenjivost Sunca i zvijezda (SOLSTEL) (Vršnak, Bojan, HRZZ - 2013-11) ( CroRIS)
Ustanove:
Geodetski fakultet, Zagreb,
Sveučilište u Rijeci - Odjel za fiziku
Profili:
Ivica Skokić
(autor)
Ivana Poljančić Beljan
(autor)
Roman Brajša
(autor)
Davor Sudar
(autor)
