Acoustic and Slow Sausage Oscillations in the Stratified Solar Photosphere: Hinode Observations and Phase Relationships

被引：5

作者：

Tsap, Y. T. ^{[1
,2
]}

Stepanov, A. V. ^{[2
]}

Kopylova, Y. G. ^{[2
]}

机构：

[1] Crimean Astrophys Observ, Nauchnyi, Crimea, Ukraine

[2] Pulkovo Observ, Pulkovskoje Ave 65-1, St Petersburg 196140, Russia

来源：

SOLAR PHYSICS | 2016年 / 291卷 / 11期

基金：

俄罗斯科学基金会;

关键词：

Sun: magnetic fields; Sun: oscillations; Sun: photosphere; MAGNETIC-FLUX TUBES; CORONAL LOOP OSCILLATIONS; WAVE-PROPAGATION; CHROMOSPHERE; ATMOSPHERE; WIND; FIELDS; PORE; APPROXIMATION; EXCITATION;

D O I：

10.1007/s11207-016-0980-4

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Based on the linearized magnetohydrodynamic (MHD) equations within the framework of the thin flux tube approximation, the phase relationships between the disturbed quantities of evanescent acoustic and slow sausage MHD modes excited in the adiabatically stratified solar atmosphere are considered. It has been shown that the sign of the phase differences (equal to +/-pi/2) between the velocity and other disturbed quantities such as pressure, density, magnetic field, and temperature, depends on the wave frequency omega. The obtained phase relationships agree well with SOT/Hinode observations obtained by Fujimura and Tsuneta (Astrophys. J. 702, 1443, 2009) when omega approximate to omega(c), where omega(c) is the cutoff frequency. The role of various modes excited in the solar atmosphere in the light of the chromospheric and coronal heating problems are discussed.

引用

页码：3349 / 3356

页数：8

共 12 条

[1] Acoustic and Slow Sausage Oscillations in the Stratified Solar Photosphere: Hinode Observations and Phase Relationships
Y. T. Tsap
A. V. Stepanov
Y. G. Kopylova
Solar Physics, 2016, 291 : 3349 - 3356
[2] Hinode observations reveal boundary layers of magnetic elements in the solar photosphere
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ASTRONOMY & ASTROPHYSICS, 2007, 476 (03): : L33 - L36
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ASTROPHYSICAL JOURNAL, 2001, 547 (01) : 491 - 502
[4] Acoustic oscillations in the field-free, gravitationally stratified cavities under solar bipolar magnetic canopies
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ASTRONOMY & ASTROPHYSICS, 2009, 505 (02) : 763 - 770
[5] Zeeman-tomography of the solar photosphere - Three-dimensional surface structures retrieved from Hinode observations
Carroll, T. A.
Kopf, M.
ASTRONOMY & ASTROPHYSICS, 2008, 481 (01) : L37 - L40
[6] Observations from Hinode/EIS of intensity oscillations above a bright point: signature of the leakage of acoustic oscillations in the inner corona
Srivastava, A. K.
Dwivedi, B. N.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2010, 405 (04) : 2317 - 2326
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Malherbe, J. -M.
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SOLAR PHYSICS, 2012, 278 (02) : 241 - 256
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ASTRONOMY & ASTROPHYSICS, 2011, 529
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Sekii, Takashi
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Tsuneta, Saku
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[10] Families of Granules, Flows, and Acoustic Events in the Solar Atmosphere from Hinode Observations
Malherbe, J-M
Roudier, T.
Frank, Z.
Rieutord, M.
SOLAR PHYSICS, 2015, 290 (02) : 321 - 333

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