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STATISTICAL DETECTION OF SLOW-MODE WAVES IN SOLAR POLAR REGIONS WITH SDO/AIA
Su, J. T.; Su, JT (reprint author), Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China.
Department空间科学部
Source PublicationASTROPHYSICAL JOURNAL
2014
Volume793Issue:2Pages:117
ISSN0004-637X
Language英语
KeywordSun: Activity Sun: Magnetic Fields Sun: Oscillations
AbstractObservations from the Atmospheric Imaging Assembly (AIA) on board the Solar Dynamics Observatory are utilized to statistically investigate the propagating quasi-periodic oscillations in the solar polar plume and inter-plume regions. On average, the periods are found to be nearly equal in the three coronal channels of AIA 171, 193 angstrom, and 211 angstrom, and the wavelengths increase with temperature from 171 angstrom, 193 angstrom, and 211 angstrom. The phase speeds may be inferred from the above parameters. Furthermore, the speed ratios of upsilon(193)/upsilon(171) and upsilon(211)/upsilon(171) are derived, e. g., 1.4 +/- 0.8 and 2.0 +/- 1.9 in the plume regions, respectively, which are equivalent to the theoretical ones for acoustic waves. We find that there are no significant differences for the detected parameters between the plume and inter-plume regions. To our knowledge, this is the first time that we have simultaneously obtained the phase speeds of slow-mode waves in the three channels in the open coronal magnetic structures due to the method adopted in the present work, which is able to minimize the influence of the jets or eruptions on wave signals.
Indexed BySCI
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/4473
Collection空间科学部
Corresponding AuthorSu, JT (reprint author), Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China.
Recommended Citation
GB/T 7714
Su, J. T.,Su, JT . STATISTICAL DETECTION OF SLOW-MODE WAVES IN SOLAR POLAR REGIONS WITH SDO/AIA[J]. ASTROPHYSICAL JOURNAL,2014,793(2):117.
APA Su, J. T.,&Su, JT .(2014).STATISTICAL DETECTION OF SLOW-MODE WAVES IN SOLAR POLAR REGIONS WITH SDO/AIA.ASTROPHYSICAL JOURNAL,793(2),117.
MLA Su, J. T.,et al."STATISTICAL DETECTION OF SLOW-MODE WAVES IN SOLAR POLAR REGIONS WITH SDO/AIA".ASTROPHYSICAL JOURNAL 793.2(2014):117.
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