Observations of the solar corona in polarized white light during the total solar eclipse of February 16, 1980: Preliminary results

Solar Physics ◽  
1985 ◽  
Vol 98 (1) ◽  
Author(s):  
F. Clette ◽  
P. Cugnon ◽  
A. Koeckelenbergh
Keyword(s):  
Solar Corona ◽  
Solar Eclipse ◽  
White Light ◽  
Total Solar Eclipse ◽  
Preliminary Results

FeXIV Line Emission Polarization of the July 11, 1991 Solar Corona

1994 ◽  
Vol 144 ◽  
pp. 541-547
Author(s):  
J. Sýkora ◽  
J. Rybák ◽  
P. Ambrož
Keyword(s):  
High Resolution ◽  
Solar Corona ◽  
Emission Line ◽  
Solar Eclipse ◽  
White Light ◽  
Preliminary Analysis ◽  
Line Emission ◽  
Total Solar Eclipse ◽  
Degree Of Polarization ◽  
High Resolution Images

AbstractHigh resolution images, obtained during July 11, 1991 total solar eclipse, allowed us to estimate the degree of solar corona polarization in the light of FeXIV 530.3 nm emission line and in the white light, as well. Very preliminary analysis reveals remarkable differences in the degree of polarization for both sets of data, particularly as for level of polarization and its distribution around the Sun’s limb.

scholarly journals Polarization of white-light solar corona and sky polarization effect during total solar eclipse on March 29, 2006

2019 ◽  
pp. 83-87 ◽  
Author(s):  
V. Merzlyakov ◽  
Ts. Tsvetkov ◽  
L. Starkova ◽  
R. Miteva
Keyword(s):  
Solar Corona ◽  
Solar Eclipse ◽  
White Light ◽  
Linear Dependence ◽  
Polarization Effect ◽  
Thomson Scattering ◽  
Total Solar Eclipse ◽  
Degree Of Polarization ◽  
The Sun ◽  
Eclipse Observations

Ground-based total solar eclipse observations are still the key method for coronal investigations. The question about its white-light degree of polarization remains unanswered. There are hypotheses claiming that the degree of polarization in certain regions of the corona may be higher than the maximal theoretically predicted value determined by Thomson scattering. We present polarization of the white-light solar corona observations obtained by three different teams during the March 29, 2006 solar total eclipse. We give an interpretation on how the polarization of the sky impacts brightness of the polarized solar corona, depending on the landscape during the totality. Moreover, it is shown that the singular polarization points of the corona are in linear dependence with the height of the Sun above the horizon.

scholarly journals Observations of the solar corona during the total solar eclipse on 21 August 2017

2017 ◽  
Vol 1 (1) ◽  
pp. 68-71 ◽  
Author(s):  
Hui Tian ◽  
◽  
ZhongQuan Qu ◽  
YaJie Chen ◽  
LinHua Deng ◽  
...  
Keyword(s):  
Solar Corona ◽  
Solar Eclipse ◽  
Total Solar Eclipse

scholarly journals On the Coronal and Prominence Structures Observed at the Total Solar Eclipse of 11 July 1991

1994 ◽  
Vol 154 ◽  
pp. 205-210
Author(s):  
Y. Suematsu ◽  
H. Fukushima ◽  
Y. Nishino
Keyword(s):  
Solar Eclipse ◽  
Near Infrared ◽  
Thermal Structure ◽  
Wavelength Region ◽  
Total Solar Eclipse ◽  
Preliminary Results ◽  
Spectroscopic Observations ◽  
Physical Conditions ◽  
Made In

Coronal images were taken in the light of the He I 10830 Å line, the 10000 Å continuum, and the Fe XIV 5303 Å line, with the aim of studying the thermal structure of the corona. In addition, spectroscopic observations were made in the violet wavelength region (3760-4060 Å) and near-infrared (10745-10835 Å), to obtain details of physical conditions of the corona, especially of its cool part. The data obtained do not show any distinct cool structures other than ordinary prominences. Some preliminary results concerning the corona and prominence structures are given.

Polarization neutral point pairs of the solar corona and the lunar disc observed during the total solar eclipse on 11 August 1999 in Hungary

2021 ◽  
Vol 60 (13) ◽  
pp. 3609
Author(s):  
Gábor Horváth ◽  
Judit Slíz-Balogh ◽  
István Pomozi ◽  
György Kriska
Keyword(s):  
Solar Corona ◽  
Solar Eclipse ◽  
Total Solar Eclipse ◽  
Neutral Point

Electron Temperatures and Flow Speeds of the Low Solar Corona: MACS Results from the Total Solar Eclipse of 29 March 2006 in Libya

Solar Physics ◽  
2011 ◽  
Vol 270 (1) ◽  
pp. 235-251 ◽  
Author(s):  
Nelson L. Reginald ◽  
Joseph M. Davila ◽  
O. C. St. Cyr ◽  
Douglas M. Rabin ◽  
Madhulika Guhathakurta ◽  
...  
Keyword(s):  
Solar Corona ◽  
Solar Eclipse ◽  
Total Solar Eclipse ◽  
Flow Speeds

scholarly journals Identification of moon craters and solar corona during total solar eclipse on 9thMarch 2016

2016 ◽  
Vol 771 ◽  
pp. 012015
Author(s):  
Luthfiandari ◽  
N Ekawanti ◽  
F G Purwati ◽  
D Herdiwijaya
Keyword(s):  
Solar Corona ◽  
Solar Eclipse ◽  
Total Solar Eclipse

scholarly journals Photometric Analysis of the Solar Corona on 1984 November 22/23

1988 ◽  
Vol 98 ◽  
pp. 166-167
Author(s):  
Roland Caron ◽  
Christian Nitscheim ◽  
Michel Sarrazin
Keyword(s):  
Solar Corona ◽  
Papua New Guinea ◽  
Solar Eclipse ◽  
New Caledonia ◽  
Focal Length ◽  
Total Solar Eclipse ◽  
Photometric Analysis ◽  
Naval Vessel ◽  
Coral Sea ◽  
Observational Site

The total solar eclipse of 1984 November 22/23 was observed from a French naval vessel off Noumea (New Caledonia) in the Coral Sea. The observations were made by a team from the S.A.F., led by Serge Koutchmy and Christian Nitschelm of the Institut d’Astrophysique de Paris. The duration of the eclipse was considerably longer off New Caledonia (1 m 39 s) than in Papua-New-Guinea (55 s). However, the observational site – on board a ship well out to sea – greatly restricted the use of long-focal-length instruments that are normally employed. The equipment used to photograph this eclipse therefore was chosen with motion (pitching, rolling, etc.) of the support in mind. Short focal lengths were preferred, although one refractor with a focal length of 1.5 m was used as a trial.

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