Specific features of long-period oscillations of sunspots and photosphere according to the MDI (SOHO) data

被引：0
|
作者：
V. I. Efremov
L. D. Parfinenko
A. A. Solov’ev
机构：
[1] Russian Academy of Sciences,Central (Pulkovo) Astronomical Observatory
来源：
Geomagnetism and Aeronomy | 2013年 / 53卷
关键词：
Period Oscillation; Wavelet Spectrum; Side Panel; Intensity Record; Sight Velocity;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Long-period oscillations of the magnetic field and the line-of-sight velocity have been detected in sunspots based on the synchronous 90-h time series of magnetograms and dopplergrams obtained with the MDI(SOHO) device. The sunspot eigenmode (12–30 h), the periods of which nonlinearly depend on the magnetic field strength, predominates in the magnetic field oscillation spectrum. The mode, which is probably induced by motions of supergranulation cells (33 h), predominates in the sunspot line-of-sight velocity oscillation spectrum. A strong mode (33 h), which indicates that long-period quasi-oscillations of supergranulation exist, was also detected in the velocity power spectrum for a quiet photosphere, together with the known 5-min mode.
引用
收藏
页码：1016 / 1020
页数：4
相关论文
共 50 条
  • [21] Long-Period Oscillations of Sunspots by NoRH and SSRT Observations
    Bakunina, Irina A.
    Abramov-Maximov, Vladimir E.
    Nakariakov, Valery M.
    Lesovoy, Sergei V.
    Soloviev, Alexander A.
    Tikhomirov, Yurii V.
    Melnikov, Victor F.
    Shibasaki, Kiyoto
    Nagovitsyn, Yurii A.
    Averina, Elena L.
    PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 2013, 65
  • [22] Long-period oscillations of millimeter emission above sunspots
    Smirnova, V.
    Riehokainen, A.
    Ryzhov, V.
    Zhiltsov, A.
    Kallunki, J.
    ASTRONOMY & ASTROPHYSICS, 2011, 534
  • [23] Long-Period Oscillations in Polar Plumes as Observed by cds on Soho
    D. Banerjee
    E. O'Shea
    J.G. Doyle
    Solar Physics, 2000, 196 : 63 - 78
  • [24] Long-period oscillations in polar plumes as observed by CDS on SOHO
    Banerjee, D
    O'Shea, E
    Doyle, JG
    SOLAR PHYSICS, 2000, 196 (01) : 63 - 78
  • [25] Discovery of long-period magnetic field oscillations and motions in isolated sunspots
    Grinon-Marin, A. B.
    Yabar, A.
    Socas-Navarro, H.
    Centeno, R.
    ASTRONOMY & ASTROPHYSICS, 2020, 635 (635)
  • [26] Long-period oscillations in polar coronal holes as observed by CDS on SOHO
    Banerjee, D
    O'Shea, E
    Doyle, JG
    Goossens, M
    MULTI-WAVELENGTH OBSERVATIONS OF CORONAL STRUCTURE AND DYNAMICS, 2002, 13 : 19 - 22
  • [27] Long period oscillations in sunspots
    Chorley, N.
    Hnat, B.
    Nakariakov, V. M.
    Inglis, A. R.
    Bakunina, I. A.
    ASTRONOMY & ASTROPHYSICS, 2010, 513
  • [28] Investigation of Quasi-periodic Solar Oscillations in Sunspots Based on SOHO/MDI Magnetograms
    J. Kallunki
    A. Riehokainen
    Solar Physics, 2012, 280 : 347 - 354
  • [29] Investigation of Quasi-periodic Solar Oscillations in Sunspots Based on SOHO/MDI Magnetograms
    Kallunki, J.
    Riehokainen, A.
    SOLAR PHYSICS, 2012, 280 (02) : 347 - 354
  • [30] Period persistence of long period oscillations in sunspots
    Chorley, N.
    Foullon, C.
    Hnat, B.
    Nakariakov, V. M.
    Shibasaki, K.
    ASTRONOMY & ASTROPHYSICS, 2011, 529
12345