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  • 1
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    Report from solar physics (1989)
    In:  CASI
    Details
    Publication Date: 2013-08-31
    Description: A discussion of the nature of solar physics is followed by a brief review of recent advances in the field. These advances include: the first direct experimental confirmation of the central role played by thermonuclear processes in stars; the discovery that the 5-minute oscillations of the Sun are a global seismic phenomenon that can be used as a probe of the structure and dynamical behavior of the solar interior; the discovery that the solar magnetic field is subdivided into individual flux tubes with field strength exceeding 1000 gauss. Also covered was a science strategy for pure solar physics. Brief discussions are given of solar-terrestrial physics, solar/stellar relationships, and suggested space missions.
    Keywords: SOLAR PHYSICS
    Type: NASA, Marshall Space Flight Center, Solar-Terrestrial Science Strategy Workshop; p 31-49
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    The Advanced Solar Observatory. Executive summary (1986)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The topics covered include the following: (1) an overview of the Advanced Solar Observatory program and instrumentation; (2) the scientific motivation for the Advanced Solar Observatory; (3) a brief review of recent advances in solar physics; (4) a scientific strategy for solar physics; (5) the scientific objectives of the Advanced Solar Observatory; (6) the configuration of the Advanced Solar Observatory; (7) the development of the Advanced Solar Observatory; (8) the performance of the Advanced Solar Observatory; (9) scientific operation of the Advanced Solar Observatory; and (10) present status of the Advanced Solar Observatory. A compilation of major scientific problems in solar physics is presented in the appendix.
    Keywords: SOLAR PHYSICS
    Type: NASA-TM-108147 , NAS 1.15:108147
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    The relative abundance of neon and magnesium in the solar corona (1976)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: A technique is proposed for specifically determining the relative solar coronal abundance of neon and magnesium. The relative abundance is calculated directly from the relative intensity of the resonance lines of Ne X (12.134A) and Mg XI (9.169A) without the need for the development of a detailed model of the thermal structure of the corona. Moderate resolution Bragg crystal spectrometer results from the OVI-10 satellite were used to determine a coronal neon to magnesium relative abundance of 1.47 + or - 0.38. The application of this technique to a recent higher resolution rocket observation gave an abundance ratio of approximately 0.93 + or - 0.15.
    Keywords: SOLAR PHYSICS
    Type: NASA-CR-146394 , SU-IPR-650
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Preliminary results from the S-056 X-ray telescope experiment aboard the Skylab-Apollo Telescope Mount (1976)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Keywords: SOLAR PHYSICS
    Type: AIAA PAPER 74-1233 , Conference on Scientific investigations on the Skylab satellite; Oct 30, 1974 - Nov 01, 1974; Huntsville, AL
    Format: text
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  • 5
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    Interpretation of the X-ray spectra of solar active regions (1975)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: This paper presents a review of recent analytical studies of the coronal X-ray spectrum below 25 A. The techniques used to compute the theoretical coronal spectrum, and the currently available atomic rate constant data are reviewed first. Spectroscopic techniques which have been proposed for the determination of coronal temperature and density structure, and the results derived from their application to coronal spectra are also reviewed. A number of coronal models based on X-ray observations have been developed recently, and the coronal temperature structure and composition predicted by these models is discussed, and compared with models of the corona and transition region derived from studies of the solar EUV spectrum.
    Keywords: SOLAR PHYSICS
    Type: Solar gamma-, X-, and EUV radiation; Jun 11, 1974 - Jun 14, 1974; Buenos Aires; Argentina
    Format: text
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    NASA TECHNICAL REPORTS
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