A wavelet analysis of quasi-periodic variability within the solar corona

被引：0
|
作者：
Marsh, MS [1 ]
Walsh, RW [1 ]
Bromage, BJI [1 ]
机构：
[1] Univ Cent Lancashire, Ctr Astrophys, Preston PR1 2HE, Lancs, England
来源：
PROCEEDINGS OF THE SOHO 11 SYMPOSIUM ON FROM SOLAR MIN TO MAX: HALF A SOLAR CYCLE WITH SOHO | 2002年 / 508卷
关键词：
SOHO; GIS; solar; corona; waves; wavelet analysis; oscillations;
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
High time resolution (approximate to 13 sec cadence) Solar and Helio-spheric Observatory (SOHO) Coronal Diagnostic Spectrometer (CDS) Grazing Incidence Spectrometer (GIS) time series data is analysed for evidence of quasi-periodic variability in the solar corona. The observations are obtained from a GIS study of a coronal hole boundary region taken in October 1997. A wavelet analysis is applied to EUV emission lines covering a temperature range of log T-c=5.3-6.1 K. Wavelet analysis allows the frequency and temporal information of any periods present within the data to be analysed. Statistically significant periods are found within the range 100-900 seconds. Observations of short wavepackets with periods of the order 50-100 seconds with durations of 2-5 oscillations are reported.
引用
收藏
页码：319 / 322
页数：4
相关论文
共 50 条
  • [21] Modeling and Analysis of Quasi-Periodic Arrays
    Li, Maokun
    Dang, Xunwang
    Liu, Tong
    Yang, Fan
    Xu, Shenheng
    Boag, Amir
    2017 INTERNATIONAL CONFERENCE ON ELECTROMAGNETICS IN ADVANCED APPLICATIONS (ICEAA), 2017, : 998 - 1000
  • [22] Wavelet packet based algorithm for identification of quasi-periodic signals
    Averbuch, AZ
    Kozlov, I
    Zheludev, VA
    WAVELETS: APPLICATIONS IN SIGNAL AND IMAGE PROCESSING IX, 2001, 4478 : 353 - 360
  • [23] Invariant wavelet packets for noise reduction on quasi-periodic structures
    Stoschek, A
    INTERNATIONAL CONFERENCE ON IMAGING SCIENCE, SYSTEMS, AND TECHNOLOGY, PROCEEDINGS, 1999, : 86 - 92
  • [24] Quasi-Periodic Releases of Streamer Blobs and Velocity Variability of the Slow Solar Wind near the Sun
    Song, H. Q.
    Chen, Y.
    Liu, K.
    Feng, S. W.
    Xia, L. D.
    SOLAR PHYSICS, 2009, 258 (01) : 129 - 140
  • [25] QUASI-PERIODIC SOLUTIONS OF DISSIPATIVE SYSTEMS WITH QUASI-PERIODIC COEFFICIENTS
    CHEBAN, DN
    DIFFERENTIAL EQUATIONS, 1986, 22 (02) : 200 - 209
  • [26] Quasi-Periodic Releases of Streamer Blobs and Velocity Variability of the Slow Solar Wind near the Sun
    H. Q. Song
    Y. Chen
    K. Liu
    S. W. Feng
    L. D. Xia
    Solar Physics, 2009, 258 : 129 - 140
  • [27] QUASI-PERIODIC SOLUTIONS OF QUASI-PERIODIC DIFFERENTIAL-EQUATIONS
    BALBI, JH
    JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS, 1981, 80 (02) : 490 - 496
  • [28] Modelling Quasi-Periodic Pulsations in Solar and Stellar Flares
    J. A. McLaughlin
    V. M. Nakariakov
    M. Dominique
    P. Jelínek
    S. Takasao
    Space Science Reviews, 2018, 214
  • [29] EVIDENCE FOR QUASI-PERIODIC DOPPLER MOTIONS IN SOLAR PROMINENCES
    BALTHASAR, H
    KNOLKER, M
    STELLMACHER, G
    WIEHR, E
    ASTRONOMY & ASTROPHYSICS, 1986, 163 (1-2) : 343 - 346
  • [30] Looking for the cause of the quasi-periodic pulsations in solar flares
    Szaforz, Zaneta
    Tomczak, Michal
    XXXVIII POLISH ASTRONOMICAL SOCIETY MEETING, 2018, 7 : 135 - 137
12345