Observations of the chromospheric network: initial results from the Apollo telescope mount

view Abstract Citations (49) References (2) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Observations of the Chromospheric Network: Initial Results from the Apollo Telescope Mount Reeves, E. M. ; Foukal, P. V. ; Huber, M. C. E. ; Noyes, R. W. ; Schmahl, E. J. ; Timothy, J. G. ; Vernazza, J. E. ; Withbroe, G. L. Abstract A preliminary analysis of early data taken by the HCO spectrometer on Skylab shows that the solar chromospheric network can be clearly seen with varying contrast in the extreme-ultraviolet emission characteristic of temperatures between 10 v K (the Lyman continuum) and 3 X 10 K (0 vi). In the emission of Mg x, a coronal line formed at about 1.5 X 108 K, the network is generally unrecognizable. This is interpreted as being due to a spreading of the magnetic field lines of the network boundary in the height interval corresponding to the temperature difference between 3 X 10 and 1.5 X 108 K. We note that in certain anomalous cases, bright points of the network are seen to extend with high contrast and essentially unchanged in their cross-section through the full range of temperatures characteristic of the chromosphere, transition region, and low corona. Subject headings: granules and supergranules, solar- spectra, ultraviolet Publication: The Astrophysical Journal Pub Date: February 1974 DOI: 10.1086/181423 Bibcode: 1974ApJ...188L..27R full text sources ADS |