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1

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Numerical modeling of stimulation of induced magnetosphere during interaction of solar wind with the ionosphere of Venus (1979)

Lipatov, A. S.

In: CASI

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Publication Date: 2019-08-28

Description: Electrodynamic processes in the ionopause are examined as well as the structure of the induced magnetosphere.

Keywords: SOLAR PHYSICS

Type: NASA-TM-75921 , PR-351

Format: application/pdf

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2

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A broad look at solar physics adapted from the solar physics study of August 1975 (1979)

Timothy, A. ; Kundu, M. R. ; Hundhausen, A. ; [et al.]

In: Other Sources

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Publication Date: 2019-08-28

Description: The current status of our knowledge of the basic mechanisms involved in fundamental solar phenomena is reviewed. These include mechanisms responsible for heating the corona, the generation of the solar wind, the particle acceleration in flares, and the dissipation of magnetic energy in field reversal regions, known as current sheets. The discussion covers solar flares and high-energy phenomena, solar active regions; solar interior, convection, and activity; the structure and energetics of the quiet solar atmosphere; the structure of the corona; the solar composition; and solar terrestrial interactions. It also covers a program of solar research, including the special observational requirements for spectral and angular resolution, sensitivity, time resolution, and duration of the techniques employed.

Keywords: SOLAR PHYSICS

Format: text

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3

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Solar wind and magnetosphere interactions (1979)

Russell, C. T. ; Holzer, R. E. ; Feynman, J. ; [et al.]

In: CASI

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Publication Date: 2019-08-28

Description: The relationship between the magnetosphere and the solar wind is addressed. It is noted that this interface determines how much of the solar plasma and field energy is transferred to the Earth's environment, and that this coupling not only varies in time, responding to major solar disturbances, but also to small changes in solar wind conditions and interplanetary field directions. It is recommended that the conditions of the solar wind and interplanetary medium be continuously monitored, as well as the state of the magnetosphere. Other recommendations include further study of the geomagnetic tail, tests of Pc 3,4 magnetic pulsations as diagnostics of the solar wind, and tests of kilometric radiation as a remote monitor of the auroral electrojet.

Keywords: SOLAR PHYSICS

Type: NASA. Marshall Space Flight Center Solar-Terrest. Predictions Proc., Vol. 2; p 346-364

Format: text

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4

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Effects of long-period solar activity fluctuation on temperature and pressure of the terrestrial atmosphere (1978)

Rubashev, B. M.

In: CASI

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Publication Date: 2019-08-28

Description: The present state of research on the influence of solar sunspot activity on tropospheric temperature and pressure is reviewed. The existence of an 11-year temperature cycle of 5 different types is affirmed. A cyclic change in atmospheric pressure, deducing characteristic changes between 11-year cycles is discussed. The existence of 80-year and 5-to-6-year cycles of temperature is established, and physical causes for birth are suggested.

Keywords: SOLAR PHYSICS

Type: NASA-TM-75345

Format: application/pdf

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5

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The solar XUV He I and He II emission lines. I - Intensities and gross center-to-limb behavior (1978)

Mango, S. A. ; Bohlin, J. D. ; Glackin, D. L. ; [et al.]

In: Other Sources

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Publication Date: 2019-08-28

Description: The center-to-limb variation of the He II 304- and 256-A lines and He I 584- and 537-A lines is derived for different solar features, but averaged over the chromospheric supergranulation structure. The general trend is for limb brightening in quiet-sun regions, limb neutrality in unipolar magnetic regions (UMR), and limb darkening in polar coronal holes. The center-to-limb behavior in these optically thick emission lines indicates collisional excitation and decreasing transition-region temperature gradients with respect to optical depth in the sequence quiet sun to UMR to coronal hole.

Keywords: SOLAR PHYSICS

Type: PB80-118110 , Astrophysical Journal; vol. 220

Format: text

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6

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Solar and magnetospheric science (1976)

Chapman, R. D. ; Timothy, A. F. ; Schmerling, E. R.

In: CASI

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Publication Date: 2019-08-28

Description: The current status of the Solar Physics Program and the Magnetospheric Physics Program is discussed. The scientific context for each of the programs is presented, then the current programs and future plans are outlined.

Keywords: SOLAR PHYSICS

Type: NASA-TM-X-3440

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7

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ATM observations - X-ray results (1976)

Timothy, A. F. ; Krieger, A. S. ; Vaiana, G. S. ; [et al.]

In: Other Sources

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Publication Date: 2019-08-28

Description: Preliminary results of the solar X-ray observations from Skylab are reviewed which indicate a highly structured nature for the corona, with closed magnetic-loop structures over a wide range of size scales. A description of the S-054 experiments is provided, and values are given for the parameters - including size, density, and temperature - describing a variety of typical coronal features. The structure and evolution of active regions, coronal holes, and bright points are discussed.

Keywords: SOLAR PHYSICS

Type: Astrophysics and Space Science; 39; Jan. 197

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8

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A comparison of coronal X-ray structures of active regions with magnetic fields computed from photospheric observations (1975)

Krieger, A. S. ; Timothy, A. F. ; Zombeck, M. V. ; [et al.]

In: Other Sources

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Publication Date: 2019-08-28

Description: The appearances of several X-ray active regions observed on March 7, 1970 and June 15, 1973 are compared with the corresponding coronal magnetic-field topology. Coronal fields have been computed from measurements of the longitudinal component of the underlying magnetic fields, based on the current-free hypothesis. An overall correspondence between X-ray structures and calculated field lines is established, and the magnetic counterparts of different X-ray features are also examined. A correspondence between enhanced X-ray emission and the location of compact closed field lines is suggested. Representative magnetic-field values calculated under the assumption of current-free fields are given for heights up to 200 sec.

Keywords: SOLAR PHYSICS

Type: Solar Physics; 44; Sept

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9

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The mechanism of temperature and pressure changes in the Earth's atmosphere during solar flares (1979)

Reshetov, V. D.

In: CASI

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Publication Date: 2019-08-28

Description: The effect of solar flares on the weather on Earth is examined. It is concluded that the processes which arise in the atmosphere are so intricate that a single calculation of solar activity is insufficient for long-range forecasting. However, combined consideration of processes dependent upon the dynamic instability of the atmosphere and the effect of solar activity will contribute to the improvement of long-range forecasts.

Keywords: SOLAR PHYSICS

Type: NASA-TM-75349 , All-Union Conf. on Sun Atmosphere Relations in Climate Theory and Weather Forecasts; Oct 30, 1972 - Nov 01, 1972; Moscow

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10

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Extreme ultraviolet observations of coronal holes. II - Association of holes with solar magnetic fields and a model for their formation during the solar cycle (1978)

Sheeley, N. R., Jr. ; Bohlin, J. D.

In: Other Sources

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Publication Date: 2019-08-28

Description: Skylab and ground-based observations in the extreme UV range of the spectrum are used to analyze characteristics of coronal holes, and to correlate their development with variations in the solar cycle. The mergence of bipolar magnetic regions (BMR) during the declining phase of the cycle is held reponsible for the formation of large equatorial holes (M-regions, which cause recurring geomagnetic storms). The BMR mergence model can also be applied to polar cap holes.

Keywords: SOLAR PHYSICS

Type: Solar Physics; 56; Jan. 197

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