What is the Nature of EUV Waves? First STEREO 3D Observations and Comparison with Theoretical Models

作者: S. Patsourakos , A. Vourlidas , Y. M. Wang , G. Stenborg , A. Thernisien

DOI: 10.1007/S11207-009-9386-X

关键词:

摘要: One of the major discoveries Extreme ultraviolet Imaging Telescope (EIT) on SOHO was intensity enhancements propagating over a large fraction solar surface. The physical origin(s) so-called EIT waves is still strongly debated with either wave (primarily fast-mode MHD waves) or nonwave (pseudo-wave) interpretations. difficulty in understanding nature EUV lies limitations observations that have been used almost exclusively for their study. They suffer from low cadence and single temperature viewpoint coverage. These are largely overcome by SECCHI/EUVI onboard STEREO mission. EUVI telescopes provide high-cadence, simultaneous multitemperature coverage two well-separated viewpoints. We present here first detailed analysis an observed disk imagers 7 December 2007 when spacecraft separation ≈ 45°. Both small flare coronal mass ejection (CME) were associated wave. also offer comprehensive comparison various interpretations against observations. Our findings as follows: (1) High-cadence (2.5-minute) 171 A images showed strong association between expanding loops onset significant differences appearance viewpoints during its early stages; these disappeared later; (2) appears at active region periphery abrupt disappearance occurs within interval 2.5 minutes; (3) different temperatures most visible 1 – 2 MK range invisible chromospheric/transition temperatures; (4) triangulations indicate it rather lying (≈ 90 Mm above surface); (5) forward-fitting corresponding CME seen COR1 coronagraphs projection best-fit model surface inconsistent location size co-temporal wave; (6) simulations found good agreement overall shape give support interpretation they probably triggered rapid expansion CME.

参考文章(88)
Hugh S. Hudson, Josef I. Khan, James R. Lemen, Nariaki V. Nitta, Yutaka Uchida, Soft X-ray observation of a large-scale coronal wave and its exciter Solar Physics. ,vol. 212, pp. 121- 149 ,(2003) , 10.1023/A:1022904125479
Solmag, Ethnikon Asteroskopeion Athēnōn, Iau Colloquium, Huguette Sawaya-Lacoste, SOLMAG 2002 : proceedings of the Magnetic Coupling of the Solar Atmosphere Euroconference and IAU Colloquium 188, 11-15 June 2002, Santorini, Greece European Space Agency. ,(2002)
M. Pick, T. G. Forbes, G. Mann, H. V. Cane, J. Chen, A. Ciaravella, H. Cremades, R. A. Howard, H. S. Hudson, A. Klassen, K. L. Klein, M. A. Lee, J. A. Linker, D. Maia, Z. Mikic, J. C. Raymond, M. J. Reiner, G. M. Simnett, N. Srivastava, D. Tripathi, R. Vainio, A. Vourlidas, J. Zhang, T. H. Zurbuchen, N. R. Sheeley, C. Marqué, Multi-Wavelength Observations of CMEs and Associated Phenomena Space Science Reviews. ,vol. 123, pp. 341- 382 ,(2006) , 10.1007/S11214-006-9021-1
B. De Pontieu, T. E. Berger, C. J. Schrijver, A. M. Title, Dynamics of Transition Region ‘Moss’ at High Time Resolution Solar Physics. ,vol. 190, pp. 419- 435 ,(2000) , 10.1007/978-94-017-3429-5_26
U. Feldman, K. G. Widing, H. P. Warren, Morphology of the Quiet Solar Upper Atmosphere in the 4 × 104 < Te < 1.4 × 106 K Temperature Regime The Astrophysical Journal. ,vol. 522, pp. 1133- 1147 ,(1999) , 10.1086/307682
Coronal Mass Ejections and Type II Radio Bursts Geophysical monograph. ,vol. 165, pp. 207- 220 ,(2013) , 10.1029/165GM20
C. Delannée, G. Aulanier, Cme Associated with Transequatorial Loops and a Bald Patch Flare Solar Physics. ,vol. 190, pp. 107- 129 ,(2000) , 10.1007/978-94-017-3429-5_8
William T. Thompson, PÅl Brekke, EUV Full Sun Imaged Spectral Atlas Using the SOHO Coronal Diagnostic Spectrometer Solar Physics. ,vol. 195, pp. 45- 74 ,(2000) , 10.1023/A:1005203001242
N. Gopalswamy, Z. Mikić, D. Maia, D. Alexander, H. Cremades, P. Kaufmann, D. Tripathi, Y.-M. Wang, The Pre-CME Sun Space Science Reviews. ,vol. 123, pp. 303- 339 ,(2006) , 10.1007/S11214-006-9020-2