Solar Physics

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Book review
Solar Physics - Tập 102 - Trang 203-203 - 1985
S. T. Wu
Decameter solar type III bursts: Data classification with use of cluster analysis
Solar Physics - Tập 156 - Trang 131-143 - 1995
N. A. Stepanova, L. L. Bazelyan, E. P. Abranin, A. I. Brazhenko, S. A. Sapogov, Ya. G. Tzybko
The many-parametric data on decametric type III bursts containing more than 1000 events were classified with use of cluster analysis, i.e., the pattern recognition procedure. For the classification such parameters have been used as intensity, duration and degree of circular polarization derived from burst time profiles. The automatic classification has resulted in division of daily samples of type...... hiện toàn bộ
Coronal Mass Ejection of 15 May 2001: I. Evolution of Morphological Features of the Eruption
Solar Physics - Tập 225 - Trang 337-353 - 2004
D. Maričić, B. Vršnak, A. L. Stanger, A. Veronig
We study the initiation and development of the limb coronal mass ejection (CME) of 15 May 2001, utilizing observations from Mauna Loa Solar Observatory (MLSO), the Solar and Heliospheric Observatory (SOHO), and Yohkoh. The pre-eruption images in various spectral channels show a quiescent prominence imbedded in the coronal void, being overlaid by the coronal arch. After the onset of rapid accelerat...... hiện toàn bộ
On umbral flashes in different sunspot groups
Solar Physics - Tập 91 - Trang 51-54 - 1984
I. P. Turova
The results of a statistical investigation of the occurrence of umbral flashes for 40 sunspot groups are reported for the period 1966–1983. The following characteristics were chosen for the analysis: (a) position on the solar disk; (b) group area; (c) sunspot area; (d) maximum magnetic field strength of a sunspot; (e) modified Zürich class; (f) sunspot age; (g) magnetic structure; and (h) flare ac...... hiện toàn bộ
The Atmospheric Imaging Assembly (AIA) on the Solar Dynamics Observatory (SDO)
Solar Physics - Tập 275 - Trang 17-40 - 2011
James R. Lemen, Alan M. Title, David J. Akin, Paul F. Boerner, Catherine Chou, Jerry F. Drake, Dexter W. Duncan, Christopher G. Edwards, Frank M. Friedlaender, Gary F. Heyman, Neal E. Hurlburt, Noah L. Katz, Gary D. Kushner, Michael Levay, Russell W. Lindgren, Dnyanesh P. Mathur, Edward L. McFeaters, Sarah Mitchell, Roger A. Rehse, Carolus J. Schrijver, Larry A. Springer, Robert A. Stern, Theodore D. Tarbell, Jean-Pierre Wuelser, C. Jacob Wolfson, Carl Yanari, Jay A. Bookbinder, Peter N. Cheimets, David Caldwell, Edward E. Deluca, Richard Gates, Leon Golub, Sang Park, William A. Podgorski, Rock I. Bush, Philip H. Scherrer, Mark A. Gummin, Peter Smith, Gary Auker, Paul Jerram, Peter Pool, Regina Soufli, David L. Windt, Sarah Beardsley, Matthew Clapp, James Lang, Nicholas Waltham
The Atmospheric Imaging Assembly (AIA) provides multiple simultaneous high-resolution full-disk images of the corona and transition region up to 0.5 R ⊙ above the solar limb with 1.5-arcsec spatial resolution and 12-second temporal resolution. The AIA consists of four telescopes that employ normal-incidence, multilayer-coated optics to provide narrow-band imaging of seven e...... hiện toàn bộ
Force-free electromagnetic waves
Solar Physics - Tập 117 - Trang 391-397 - 1988
Vladimir A. Osherovich, Erast B. Gliner
The time-dependent Force-Free Electromagnetic Field (FFEMF) is studied. In contrast to the case of Force-Free Magnetic Field (FFMF), it is shown that the FFEMF can occur in the form of waves. The FFEMF wave equation is solved in the case of one spatial dimension. Besides a periodical linear FFEMF wave solutions, the existence of solitary wave solutions is demonstrated. The possible application of ...... hiện toàn bộ
Hα Observations of 8 June, 2004 Venus Transit
Solar Physics - Tập 233 Số 1 - Trang 171-184 - 2006
Ashok Ambastha, B. Ravindra, Sanjay Gosain
An Early Diagnostics of the Geoeffectiveness of Solar Eruptions from Photospheric Magnetic Flux Observations: The Transition from SOHO to SDO
Solar Physics - Tập 292 - Trang 1-16 - 2017
I. M. Chertok, V. V. Grechnev, A. A. Abunin
In our previous articles (Chertok et al. in Solar Phys. 282, 175, 2013; Chertok et al. in Solar Phys. 290, 627, 2015), we presented a preliminary tool for the early diagnostics of the geoeffectiveness of solar eruptions based on the estimate of the total unsigned line-of-sight photospheric magnetic flux in accompanying extreme ultraviolet (EUV) arcades and dimmings. This tool was based on the anal...... hiện toàn bộ
Multifractal Properties of Evolving Active Regions
Solar Physics - Tập 248 - Trang 297-309 - 2007
P. A. Conlon, P. T. Gallagher, R. T. J. McAteer, J. Ireland, C. A. Young, P. Kestener, R. J. Hewett, K. Maguire
Magnetohydrodynamic turbulence is thought to be responsible for producing complex, multiscale magnetic field distributions in solar active regions. Here we explore the multiscale properties of a number of evolving active regions using magnetograms from the Michelson Doppler Imager (MDI) on the Solar and Heliospheric Observatory (SOHO). The multifractal spectrum was obtained by using a modified bo...... hiện toàn bộ
An evaluation of the possibility of studying flare plasma turbulence using the satellites of Hei line forbidden components
Solar Physics - Tập 90 - Trang 269-279 - 1984
N. M. Firstova
Using the Baranger-Mozer method, we explore the possibility of diagnosing the flare plasma of forbidden Hei lines, that permits the determination of the plasma oscillation frequency and noise level. Examination of the Hei lines observed in solar flare has led us to conclude that: ...... hiện toàn bộ
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