The solar flare myth

Many years of research have demonstrated that large, nonrecurrent geomagnetic storms, shock wave disturbances in the solar wind, and energetic particle events in interplanetary space often occur in close association with large solar flares. This result has led to a paradigm of cause and effect - that large solar flares are the fundamental cause of these events in the near-Earth space environment. This paradigm, which the author calls, {open_quotes}the solar flare myth,{close_quotes} dominates the popular perception of the relationship between solar activity and interplanetary and geomagnetic events and has provided much of the pragmatic rationale for the study of the solar flare phenomenon. Yet there is good evidence that this paradigm is wrong and that flares do not generally play a central role in producing major transient disturbances in the near-Earth space environment. In this paper the author outlines a different paradigm of cause and effect that removes solar flares from their central position in the chain of events leading from the Sun to near-Earth space. Instead, this central role is given to events known as coronal mass ejections. 85 refs., 16 figs., 3 tabs.

[1]  B. Low Mass acceleration processes: The case of the coronal mass ejection , 1993 .

[2]  A. Hundhausen,et al.  Sizes and locations of coronal mass ejections - SMM observations from 1980 and 1984-1989 , 1993 .

[3]  J. Gosling Coronal mass ejections: The link between solar and geomagnetic activity* , 1993 .

[4]  R. Ramaty,et al.  Particle acceleration in solar flares , 1993 .

[5]  J. Phillips,et al.  Geomagnetic activity associated with earth passage of interplanetary shock disturbances and coronal mass ejections , 1991 .

[6]  Bernard V. Jackson,et al.  The identification and characteristics of solar mass ejections observed in the heliosphere by the Helios 2 photometers , 1990 .

[7]  David J. McComas,et al.  Coronal mass ejections and large geomagnetic storms , 1990 .

[8]  J. Lockwood,et al.  Indications for diffusive coronal shock acceleration of protons in selected solar cosmic ray events , 1990 .

[9]  A. Hundhausen,et al.  The launch of solar coronal mass ejections: Results from the coronal mass ejection onset program , 1990 .

[10]  B. Klecker,et al.  Impulsive acceleration and scatter-free transport of about 1 MeV per nucleon ions in (He-3)-rich solar particle events , 1989 .

[11]  J. Gosling,et al.  A test of magnetic field draping induced Bz perturbations ahead of fast coronal mass ejecta , 1989 .

[12]  T. T. von Rosenvinge,et al.  The role of interplanetary shocks in the longitude distribution of solar energetic particles , 1988 .

[13]  B. Tsurutani,et al.  Origin of interplanetary southward magnetic fields responsible for major magnetic storms near solar maximum (1978–1979) , 1988 .

[14]  E. Priest The initiation of solar coronal mass ejections by magnetic nonequilibrium , 1988 .

[15]  R. Lin,et al.  X-ray and radio properties of solar (He-3) rich events , 1988 .

[16]  N. Sheeley,et al.  Energetic interplanetary shocks, radio emission, and coronal mass ejections , 1987 .

[17]  Bruce T. Tsurutani,et al.  Criteria of interplanetary parameters causing intense magnetic storms (Dst < −100 nT) , 1987 .

[18]  R. P. Lin,et al.  Solar particle acceleration and propagation , 1987 .

[19]  David J. McComas,et al.  Field line draping about fast coronal mass ejecta: A source of strong out‐of‐the‐ecliptic interplanetary magnetic fields , 1987 .

[20]  R. Harrison Solar coronal mass ejections and flares , 1986 .

[21]  J. Ryan,et al.  Time-dependent coronal shock acceleration of energetic solar flare particles , 1986 .

[22]  E. Cliver,et al.  Solar filament eruptions and energetic particle events , 1986 .

[23]  B. Jackson Imaging of coronal mass ejections by the HELIOS spacecraft , 1985 .

[24]  Russell A. Howard,et al.  Coronal mass ejections - 1979-1981 , 1985 .

[25]  T. T. von Rosenvinge,et al.  Two classes of solar energetic particle events associated with impulsive and long-duration soft X-ray flares , 1985 .

[26]  D. Hovestadt,et al.  Temporal variations of nucleonic abundances in solar flare energetic particle events. II - Evidence for large-scale shock acceleration , 1984 .

[27]  L. G. Kocharov,et al.  3He-rich solar flares , 1984 .

[28]  R. Howard,et al.  Associations between coronal mass ejections and soft X-ray events , 1983 .

[29]  Russell A. Howard,et al.  Associations between coronal mass ejections and solar energetic proton events , 1983 .

[30]  E. Cliver,et al.  Solar proton flares with weak impulsive phases , 1983 .

[31]  P. McIntosh,et al.  Disappearing solar filaments: A useful predictor of geomagnetic activity , 1981 .

[32]  W. Feldman,et al.  Interplanetary ions during an energetic storm particle event - The distribution function from solar wind thermal energies to 1.6 MeV , 1981 .

[33]  R. MacQueen,et al.  The association of coronal mass ejection transients with other forms of solar activity , 1979 .

[34]  R. Kopp,et al.  Magnetic reconnection in the corona and the loop prominence phenomenon , 1976 .

[35]  E. Hildner,et al.  The speeds of coronal mass ejection events , 1976 .

[36]  J. D. Bohlin,et al.  Coronal changes associated with a disappearing filament , 1975 .

[37]  C. Russell,et al.  An empirical relationship between interplanetary conditions and Dst , 1975 .

[38]  J. D. Bohlin,et al.  The sources of material comprising a mass ejection coronal transient , 1975 .

[39]  A. Poland,et al.  Direct observations of a flare related coronal and solar wind disturbance , 1975 .

[40]  R. MacQueen,et al.  Mass ejections from the Sun: A view from Skylab , 1974 .

[41]  C. Fälthammar,et al.  Relationship between changes in the interplanetary magnetic field and variations in the magnetic field at the Earth's surface , 1967 .

[42]  E. Smith,et al.  EVIDENCE FOR A COLLISION-FREE MAGNETOHYDRODYNAMIC SHOCK IN INTERPLANETARY SPACE , 1964 .

[43]  S. Chapman Corpuscular influences upon the upper atmosphere , 1950 .

[44]  S. Forbush,et al.  Three Unusual Cosmic-Ray Increases Possibly Due to Charged Particles from the Sun , 1946 .

[45]  H. Newton Solar Flares and Magnetic Storms , 1943 .

[46]  G. Hale The Spectrohelioscope and its Work. Part III. Solar Eruptions and Their Apparent Terrestrial Effects , 1931 .

[47]  H. Newton,et al.  Magnetic Storms and Solar Activity, 1874 to 1927 , 1928 .

[48]  F. A. Lindemann LXX. Note on the theory of magnetic storms , 1919 .

[49]  R. C. Carrington Description of a Singular Appearance seen in the Sun on September 1, 1859 , 1859 .

[50]  E. Cliver,et al.  History and basic characteristics of eruptive flares , 1992 .

[51]  D. Reames Trapping and escape of the high energy particles responsible for major proton events , 1992 .

[52]  D. Webb The solar sources of coronal mass ejections , 1992 .

[53]  S. Kahler Solar Flares and Coronal Mass Ejections , 1992 .

[54]  J. Gosling In situ observations of coronal mass ejections in interplanetary space , 1992 .

[55]  D. Webb The solar cycle variation of the rates of CMEs and related activity , 1991 .

[56]  B. Haisch,et al.  Flares on the Sun and Other Stars , 1991 .

[57]  H. Rosenbauer,et al.  Coronal mass ejections and interplanetary shocks , 1985 .

[58]  A. Hundhausen,et al.  Satellite observations of interplanetary shock waves , 1968 .

[59]  S. Chapman,et al.  A new theory of magnetic storms , 1931 .

[60]  E. Sabine V. On periodical laws discoverable in the mean effects of the larger magnetic disturbances , 1851, Philosophical Transactions of the Royal Society of London.