Systematic investigation of mid-term periodicity of the solar full-disk magnetic fields | |
Xiang NB(向南彬)1,2,3 | |
刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS |
2019-09-01 | |
卷号 | 19期号:9页码:12 |
关键词 | Sun: general Sun: activity Sun: magnetic fields |
ISSN号 | 1674-4527 |
DOI | 10.1088/1674-4527/19/9/131 |
产权排序 | 第1完成单位 |
文献子类 | Article |
英文摘要 | The Magnetic Plage Strength Index (MPSI) and the Mount Wilson Sunspot Index (MWSI), which have been measured at Mount Wilson Observatory (MWO) since the 1970s and which indicate weak and strong magnetic field activity on the solar full disk, respectively, are used to systematically investigate midterm periodicities in the solar full-disk magnetic fields. Multitudinous mid-term periodicities are detected in MPSI and MWSI on timescales of 0.3 to 4.5 yr, and these periodicities are found to fluctuate around several typical periodicities within a small amplitude in different solar cycles or phases. The periodicity of 3.44 yr is found in MPSI, and the periodicities of 3.85 and 3.00 yr are detected in MWSI. Our analysis indicates that they reflect the true oscillating signals of solar magnetic field activity. The typical periodicities are 2.8, 2.3 and 1.8 yr in MPSI and MWSI, and possible mechanisms for these periodicities are discussed. A 1.3 yr periodicity is only detected in MPSI, and should be related to meridional flows on the solar surface. The typical annual periodicity of MPSI and MWSI is 1.07 yr, which is not derived from the annual variation of Earth's heliolatitude. Several periodicities shorter than 1 yr found in MPSI and MWSI are considered to be Rieger-type periodicities. |
学科主题 | 天文学 ; 太阳与太阳系 ; 太阳物理学 |
URL标识 | 查看原文 |
出版地 | 20A DATUN RD, CHAOYANG, BEIJING, 100012, PEOPLES R CHINA |
资助项目 | NASA ; ONR ; NSF ; National Natural Science Foundation of China[11573065] ; National Natural Science Foundation of China[11633008] ; National Natural Science Foundation of China[11603069] ; Collaborating Research Program of CAS Key Laboratory of Solar Activity[KLSA201911] ; Education Department of Sichuan province[16ZB0245] ; Education Department of Sichuan province[18ZA0350] ; Key Laboratory of Dark Matter and Space Astronomy ; Chinese Academy of Sciences ; Mount Wilson Institute |
WOS关键词 | NORTH-SOUTH ASYMMETRY ; SHORT-TERM PERIODICITIES ; MOUNT-WILSON ; ACTIVITY INDEXES ; WAVELET ANALYSIS ; SUNSPOT AREAS ; ROSSBY WAVES ; R-MODES ; OSCILLATIONS ; ROTATION |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES |
WOS记录号 | WOS:000485147000009 |
资助机构 | NASA ; ONR ; NSF ; National Natural Science Foundation of China[11573065, 11633008, 11603069] ; Collaborating Research Program of CAS Key Laboratory of Solar Activity[KLSA201911] ; Education Department of Sichuan province[16ZB0245, 18ZA0350] ; Key Laboratory of Dark Matter and Space Astronomy ; Chinese Academy of Sciences ; Mount Wilson Institute |
内容类型 | 期刊论文 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/21146] |
专题 | 云南天文台_抚仙湖太阳观测站 |
通讯作者 | Xiang NB(向南彬) |
作者单位 | 1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China 2.CAS Key Laboratory of Solar Activity, National Astronomical Observatories, Beijing 100101, China 3.Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Nanjing 210008, China |
推荐引用方式 GB/T 7714 | Xiang NB. Systematic investigation of mid-term periodicity of the solar full-disk magnetic fields[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2019,19(9):12. |
APA | Xiang NB.(2019).Systematic investigation of mid-term periodicity of the solar full-disk magnetic fields.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,19(9),12. |
MLA | Xiang NB."Systematic investigation of mid-term periodicity of the solar full-disk magnetic fields".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 19.9(2019):12. |
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