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Pregled bibliografske jedinice broj: 909731

A Relationship Between the Solar Rotation and Activity Analysed by Tracing Sunspot Groups


Ruždjak, Domagoj; Brajša, Roman; Sudar, Davor; Skokić, Ivica; Poljančić Beljan, Ivana
A Relationship Between the Solar Rotation and Activity Analysed by Tracing Sunspot Groups // Solar physics, 292 (2017), 179; 1-11 doi:10.1007/s11207-017-1199-8 (međunarodna recenzija, članak, znanstveni)


Naslov
A Relationship Between the Solar Rotation and Activity Analysed by Tracing Sunspot Groups

Autori
Ruždjak, Domagoj ; Brajša, Roman ; Sudar, Davor ; Skokić, Ivica ; Poljančić Beljan, Ivana

Izvornik
Solar physics (0038-0938) 292 (2017), 179; 1-11

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Differential rotation ; Sunspot groups ; Activity cycle

Sažetak
The sunspot position published in the data bases of the Greenwich Photoheliographic Results (GPR), the US Air Force Solar Optical Observing Network and National Oceanic and Atmospheric Administration (USAF/NOAA), and of the Debrecen Photoheliographic Data (DPD) in the period 1874 to 2016 were used to calculate yearly values of the solar differential- rotation parameters A and B. These differential-rotation parameters were compared with the solar-activity level. We found that the Sun rotates more differentially at the minimum than at the maximum of activity during the epoch 1977 – 2016. An inverse correlation between equatorial rotation and solar activity was found using the recently revised sunspot number. The secular decrease of the equatorial rotation rate that accompanies the increase in activity stopped in the last part of the twentieth century. It was noted that when a significant peak in equatorial rotation velocity is observed during activity minimum, the next maximum is weaker than the previous one.

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

Ruždjak, Domagoj; Brajša, Roman; Sudar, Davor; Skokić, Ivica; Poljančić Beljan, Ivana
A Relationship Between the Solar Rotation and Activity Analysed by Tracing Sunspot Groups // Solar physics, 292 (2017), 179; 1-11 doi:10.1007/s11207-017-1199-8 (međunarodna recenzija, članak, znanstveni)
Ruždjak, D., Brajša, R., Sudar, D., Skokić, I. & Poljančić Beljan, I. (2017) A Relationship Between the Solar Rotation and Activity Analysed by Tracing Sunspot Groups. Solar physics, 292 (179), 1-11 doi:10.1007/s11207-017-1199-8.
@article{article, year = {2017}, pages = {1-11}, DOI = {10.1007/s11207-017-1199-8}, keywords = {Differential rotation, Sunspot groups, Activity cycle}, journal = {Solar physics}, doi = {10.1007/s11207-017-1199-8}, volume = {292}, number = {179}, issn = {0038-0938}, title = {A Relationship Between the Solar Rotation and Activity Analysed by Tracing Sunspot Groups}, keyword = {Differential rotation, Sunspot groups, Activity cycle} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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