Analysis of magnesium XI line profiles from solar active regions

Autor:	Richard L. Blake, E. E. Fenimore, F. Bely-Dubau, H. Felthauser, P. Faucher, M. P. Hockaday, L. Steenman-Clark, R. D. Cowan
Rok vydání:	1984
Předmět:	Physics Spectrometer Space and Planetary Science Atomic electron transition Electron temperature Astronomy and Astrophysics Electron Atomic physics Magnesium ion Spectral line Ion Line (formation)
Zdroj:	The Astrophysical Journal. 282:784
ISSN:	1538-4357 0004-637X
DOI:	10.1086/162263
Popis:	High-resolution solar spectra of the Mg XI 1s2 1S0-1s2p 1P1 resonance line at 9.169 A and the associated nearby satellite lines obtained from two rocket-borne crystal spectrometer measurements are presented. Comparisons with two independent sets of theoretical calculations for the 1s2nl-1s2pnl dielectronic satellite lines with n = 3-7 indicate electron temperatures of 4-4.5 million K. Measured line widths indicate either that the ion temperature exceeds the electron temperature by about a million K or that about 28 km/s of turbulence is present.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6c837936dd80e3e6053595d78be4dceb https://doi.org/10.1086/162263 Zobrazit plný text záznamu