Comparison of photospheric electric current and ultraviolet and x-ray emission in a solar active region

Journal Article · Wed Jan 01 00:00:00 EST 1986 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/163817· OSTI ID:5658263

Haisch, B M; Bruner, M E; Hagyard, M J; Bonnet, R M

This paper presents an extensive set of coordinated observations of a solar active region, taking into account spectroheliograms obtained with the aid of the Solar Maximum Mission (SMM) Ultraviolet Spectrometer Polarimeter (UVSP) instrument, SMM soft x-ray polychromator (XRP) raster maps, and high spatial resolution ultraviolet images of the sun in Lyman-alpha and in the 1600 A continuum. These data span together the upper solar atmosphere from the temperature minimum to the corona. The data are compared to maps of the inferred photospheric electric current derived from the Marshall Space Flight Center (MSFC) vector magnetograph observations. Some empirical correlation is found between regions of inferred electric current density and the brightest features in the ultraviolet continuum and to a lesser extent those seen in Lyman-alpha within an active region. 29 references.

• Research Organization: Lockheed Research Labs., Palo Alto, CA; NASA, Marshall Space Flight Center, Huntsville, AL; ESA, Paris, France
• OSTI ID: 5658263
• Journal Information: Astrophys. J.; (United States), Vol. 300
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
SOLAR ACTIVITY
ELECTRIC CURRENTS
CURRENT DENSITY
EMISSION SPECTRA
EXPERIMENTAL DATA
PHOTOSPHERE
ULTRAVIOLET SPECTRA
ATMOSPHERES
CURRENTS
DATA
INFORMATION
NUMERICAL DATA
SOLAR ATMOSPHERE
SPECTRA
640104* - Astrophysics & Cosmology- Solar Phenomena