caa a22 4500 445346108 CHVBK 20180317142829.0 cr unu---uuuuu 170323e20110501xx s 000 0 eng 10.1007/s11207-011-9736-3 doi (NATIONALLICENCE)springer-10.1007/s11207-011-9736-3 Electron Temperatures and Flow Speeds of the Low Solar Corona: MACS Results from the Total Solar Eclipse of 29 March 2006 in Libya [Elektronische Daten] [Nelson Reginald, Joseph Davila, O. St. Cyr, Douglas Rabin, Madhulika Guhathakurta, Donald Hassler, Hadi Gashut] An experiment was conducted in conjunction with the total solar eclipse on 29 March 2006 in Libya to measure both the electron temperature and its flow speed simultaneously at multiple locations in the low solar corona by measuring the visible K-coronal spectrum. Coronal model spectra incorporating the effects of electron temperature and its flow speed were matched with the measured K-coronal spectra to interpret the observations. Results show electron temperatures of (1.10±0.05)MK, (0.70±0.08)MK, and (0.98±0.12)MK, at 1.1R ⊙ from Sun center in the solar north, east and west, respectively, and (0.93±0.12)MK, at 1.2R ⊙ from Sun center in the solar west. The corresponding outflow speeds obtained from the spectral fit are (103±92)km s−1, (0+10)km s−1, (0+10)km s−1, and (0+10)km s−1. Since the observations were taken only at 1.1R ⊙ and 1.2R ⊙ from Sun center, these speeds, consistent with zero outflow, are in agreement with expectations and provide additional confirmation that the spectral fitting method is working. The electron temperature at 1.1R ⊙ from Sun center is larger at the north (polar region) than the east and west (equatorial region). Springer Science+Business Media B.V., 2011 Solar corona nationallicence K-corona nationallicence Electron temperature nationallicence Solar wind nationallicence Spectrograph nationallicence Reginald Nelson The Catholic University of America at NASA's Goddard Space Flight Center, MC 671, 20771, Greenbelt, MD, USA aut Davila Joseph MC 671, NASA's Goddard Space Flight Center, 20771, Greenbelt, MD, USA aut St. Cyr O. MC 671, NASA's Goddard Space Flight Center, 20771, Greenbelt, MD, USA aut Rabin Douglas MC 671, NASA's Goddard Space Flight Center, 20771, Greenbelt, MD, USA aut Guhathakurta Madhulika NASA Headquarters, 300 E Street SW, 20024, Washington, DC, USA aut Hassler Donald Southwest Research Institute, 1050 Walnut Street, Suite 400, 80302, Boulder, CO, USA aut Gashut Hadi Libyan Center for Remote Sensing and Space Science, Tripoli, Libya aut Solar Physics Springer Netherlands 270/1(2011-05-01), 235-251 0038-0938 270:1<235 2011 270 11207 https://doi.org/10.1007/s11207-011-9736-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11207-011-9736-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Reginald Nelson The Catholic University of America at NASA's Goddard Space Flight Center, MC 671, 20771, Greenbelt, MD, USA aut NATIONALLICENCE 700 1- Davila Joseph MC 671, NASA's Goddard Space Flight Center, 20771, Greenbelt, MD, USA aut NATIONALLICENCE 700 1- St. Cyr O. MC 671, NASA's Goddard Space Flight Center, 20771, Greenbelt, MD, USA aut NATIONALLICENCE 700 1- Rabin Douglas MC 671, NASA's Goddard Space Flight Center, 20771, Greenbelt, MD, USA aut NATIONALLICENCE 700 1- Guhathakurta Madhulika NASA Headquarters, 300 E Street SW, 20024, Washington, DC, USA aut NATIONALLICENCE 700 1- Hassler Donald Southwest Research Institute, 1050 Walnut Street, Suite 400, 80302, Boulder, CO, USA aut NATIONALLICENCE 700 1- Gashut Hadi Libyan Center for Remote Sensing and Space Science, Tripoli, Libya aut NATIONALLICENCE 773 0- Solar Physics Springer Netherlands 270/1(2011-05-01), 235-251 0038-0938 270:1<235 2011 270 11207 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer