Reference : EIT Observations of the Extreme Ultraviolet Sun
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/16272
EIT Observations of the Extreme Ultraviolet Sun
English
Moses, D. [Naval Research Laboratory]
Clette, Frédéric [Institut d'Astrophysique Spatiale, Université Paris XI, 91405]
Delaboudinière, J.-P. [Institut d'Astrophysique Spatiale, Université Paris XI, 91405]
Artzner, G. E. [Institut d'Astrophysique Spatiale, Université Paris XI, 91405]
Bougnet, M. [Institut d'Astrophysique Spatiale, Université Paris XI, 91405]
Brunaud, J. [Institut d'Astrophysique Spatiale, Université Paris XI, 91405]
Carabetian, C. [Institut d'Astrophysique Spatiale, Université Paris XI, 91405]
Gabriel, Alan [Institut d'Astrophysique Spatiale, Université Paris XI, 91405]
Hochedez, J. F. [Institut d'Astrophysique Spatiale, Université Paris XI, 91405]
Millier, F. [Naval Research Laboratory]
Song, X. Y. [Naval Research Laboratory]
Au, B. [Naval Research Laboratory]
Dere, K. P. [Naval Research Laboratory]
Howard, R. A. [Naval Research Laboratory]
Kreplin, R. [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO) >]
Michels, D. J. [Université de Liège - ULg > > CSL (Centre Spatial de Liège) - Instrumentation et expérimentation spatiales >]
Defise, Jean-Marc [Institut d'Optique Théorique et Appliquée]
Chauvineau, J. P. [Lockheed Palo Alto Research Laboratory]
Marioge, J. P. [Lockheed Palo Alto Research Laboratory]
Catura, R. C. [Lockheed Palo Alto Research Laboratory]
Lemen, J. R. [NASA/Goddard Space Flight Center]
Shing, L. [NASA/Goddard Space Flight Center]
Stern, R. A. [NASA/Goddard Space Flight Center]
Gurman, J. B. [NASA/Goddard Space Flight Center]
Neupert, W. M. [Laboratoire d'Astronomie Spatiale]
Newmark, J. [Laboratoire d'Astronomie Spatiale]
Thompson, B. [Observatoire Royal de Belgique]
Maucherat, A. [Observatoire Royal de Belgique]
Portier-Fozzani, F. [Observatoire Royal de Belgique]
Berghmans, D. [Observatoire Royal de Belgique]
Cugnon, P. [> >]
van Dessel, E. L. [> >]
Gabryl, J. R. [> >]
1-Oct-1997
Solar Physics
Springer Science & Business Media B.V.
175
571-599
Yes (verified by ORBi)
International
0038-0938
[en] The Extreme Ultraviolet Imaging Telescope (EIT) on board the SOHO spacecraft has been operational since 2 January 1996. EIT observes the Sun over a 45 x 45 arc min field of view in four emission line groups: Feix, x, Fexii, Fexv, and Heii. A post-launch determination of the instrument flatfield, the instrument scattering function, and the instrument aging were necessary for the reduction and analysis of the data. The observed structures and their evolution in each of the four EUV bandpasses are characteristic of the peak emission temperature of the line(s) chosen for that bandpass. Reports on the initial results of a variety of analysis projects demonstrate the range of investigations now underway: EIT provides new observations of the corona in the temperature range of 1 to 2 MK. Temperature studies of the large-scale coronal features extend previous coronagraph work with low-noise temperature maps. Temperatures of radial, extended, plume-like structures in both the polar coronal hole and in a low latitude decaying active region were found to be cooler than the surrounding material. Active region loops were investigated in detail and found to be isothermal for the low loops but hottest at the loop tops for the large loops.
http://hdl.handle.net/2268/16272
10.1023/A:1004902913117
http://esoads.eso.org/abs/1997SoPh..175..571M

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