Oscillations of sunspot magnetic fields

被引：0

作者：

Ruedi, I ^{[1
]}

Solanki, SK

Stenflo, JO

Tarbell, T

Scherrer, PH

机构：

[1] ETH Zentrum, Inst Astron, CH-8092 Zurich, Switzerland

[2] Lockheed Martin Res Lab, Dept H1 12, Palo Alto, CA 94304 USA

[3] Stanford Univ, Ctr Space Sci & Astrophys, WW Hansen Expt Phys Lab, Stanford, CA 94305 USA

来源：

ASTRONOMY & ASTROPHYSICS | 1998年 / 335卷 / 03期

关键词：

Sun : activity; magnetic fields; oscillations; photosphere; sunspots;

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report on velocity and magnetic field oscillations observed in sunspots using the MDI instrument onboard SOHO. In addition to the well-known velocity oscillations, the data clearly show highly localised oscillations of the magnetogram signal in different parts of the sunspots. We show that only oscillations of the magnetic field vector can produce the observed magnetogram oscillations, and that the observed phase relations suggest an origin in terms of magnetoacoustic gravity waves.

引用

页码：L97 / L100

页数：4

共 50 条

[21] Sunspot oscillations
Staude, J
THIRD ADVANCES IN SOLAR PHYSICS EUROCONFERENCE: MAGNETIC FIELDS AND OSCILLATIONS, 1999, 184 : 113 - 130
[22] THE PROBLEM OF DESCRIBING THE DYNAMICS OF SUNSPOT MAGNETIC-FIELDS DURING A SUNSPOT CYCLE
RIVIN, YR
IZVESTIYA AKADEMII NAUK SERIYA FIZICHESKAYA, 1995, 59 (07): : 43 - 52
[23] Waves and oscillations in magnetic fields
Goossens, M
De Groof, A
Andries, J
SOLMAG 2002: PROCEEDINGS OF THE MAGNETIC COUPLING OF THE SOLAR ATMOSPHERE EUROCONFERENCE AND IAU COLLOQUIUM 188, 2002, 505 : 137 - 144
[24] On the short-period oscillations of the magnetic field in a sunspot umbra
Efremov, VI
Parfinenko, LD
ASTRONOMICHESKII ZHURNAL, 1996, 73 (01): : 103 - 108
[25] Oscillations on the Sun in regions with a vertical magnetic field I. Sunspot umbral oscillations
Zhukov, V.I.
1600, EDP Sciences (386):
[26] IR-observations of the magnetic field in sunspots - Oscillations in a sunspot
Balthasar, H
SOLAR POLARIZATION 3, 2003, 307 : 364 - 369
[27] Oscillations on the Sun in regions with a vertical magnetic field - I. Sunspot umbral oscillations
Zhukov, VI
ASTRONOMY & ASTROPHYSICS, 2002, 386 (02) : 653 - 657
[28] OBSERVATIONS OF MAGNETIC-FIELDS AND MOTIONS FOR SUNSPOT UMBRAE
ADAM, MG
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1983, 203 (01) : 9 - 18
[29] The Evolution of Sunspot Magnetic Fields Associated with a Solar Flare
Sophie A. Murray
D. Shaun Bloomfield
Peter T. Gallagher
Solar Physics, 2012, 277 : 45 - 57
[30] The association between sunspot magnetic fields and superpenumbral fibrils
Louis, R. E.
Balthasar, H.
Kuckein, C.
Goemoery, P.
Puschmann, K. G.
Denker, C.
ASTRONOMISCHE NACHRICHTEN, 2014, 335 (02) : 161 - 167

← 1 2 3 4 5 →