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Pregled bibliografske jedinice broj: 882262

An application of the random walk model to proper motions of coronal bright points from SDO data


Skokić, Ivica; Sudar, Davor; Saar, S. H.; Brajša, Roman; Poljančić Beljan, Ivana
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)


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


Projekt / tema
HRZZ-IP-2013-11-6212 - Promjenjivost Sunca i zvijezda (Bojan Vršnak, )

Ustanove
Geodetski fakultet, Zagreb,
Sveučilište u Rijeci - Odjel za fiziku

Citiraj ovu publikaciju

Skokić, Ivica; Sudar, Davor; Saar, S. H.; Brajša, Roman; Poljančić Beljan, Ivana
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)
Skokić, I., Sudar, D., Saar, S., Brajša, R. & Poljančić Beljan, I. (2016) An application of the random walk model to proper motions of coronal bright points from SDO data. Central European astrophysical bulletin, 40 (1), 23-28.
@article{article, year = {2016}, pages = {23-28}, keywords = {Sun - coronal bright points - random walk - diffusion coefficient - SDO/AIA}, journal = {Central European astrophysical bulletin}, volume = {40}, number = {1}, issn = {1845-8319}, title = {An application of the random walk model to proper motions of coronal bright points from SDO data}, keyword = {Sun - coronal bright points - random walk - diffusion coefficient - SDO/AIA} }