Review on the solar spectral variability in the EUV for space weather purposes

Autor: J. Lilensten, T. Dudok de Wit, M. Kretzschmar, P.-O. Amblard, S. Moussaoui, J. Aboudarham, F. Auchère

Publikováno v: Annales Geophysicae, Vol 26, Pp 269-279 (2008)

The solar XUV-EUV flux is the main energy source in the terrestrial diurnal thermosphere: it produces ionization, dissociation, excitation and heating. Accurate knowledge of this flux is of prime importance for space weather. We first list the spa

Externí odkaz: https://doaj.org/article/43be9075a65349e685918080307696b0

Retrieving the solar EUV spectrum from a reduced set of spectral lines

Autor: T. D. de Wit, J. Lilensten, J. Aboudarham, P.-O. Amblard, M. Kretzschmar

Publikováno v: Annales Geophysicae, Vol 23, Pp 3055-3069 (2005)

The solar EUV irradiance is a key input for thermospheric and ionospheric models. Difficulties in continuously measuring the calibrated spectrum has prompted the use of various surrogate quantities. Although most proxies correlate quite well with

Externí odkaz: https://doaj.org/article/3c4cd4f2b91240d6ae683aca5d3a9ecb

The NAROO digitization center

Autor: C. Le Poncin-Lafitte, J. Aboudarham, C. Neiner, C. Etienne, Paolo Tanga, D. Valls-Gabaud, A. Le Van Suu, M. Y. Khovritchev, Valery Lainey, Dan Pascu, Jean-Eudes Arlot, V. Robert, L. Poirier, A.-C. Perlbarg, S. Ilovaisky, D. Horville, Josselin Desmars, J. Guérard, Jean Schneider

Publikováno v: Astronomy & Astrophysics. 652:A3

The New Astrometric Reduction of Old Observations (NAROO) center can be found at the Paris Observatory in Meudon, and it is dedicated to the measurement of astrophotographic plates and the analysis of old observations. The NAROO digitizer consists of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a224f5e849f9b91c3087e23cba82d2c2
https://doi.org/10.1051/0004-6361/202140472

Recommendation for a set of solar EUV lines to be monitored for aeronomy applications

Autor: Matthieu Kretzschmar, T. Dudok de Wit, Jean Lilensten, J. Aboudarham, Frédéric Auchère, Pierre-Olivier Amblard

Publikováno v: Annales Geophysicae, Vol 25, Iss 6, Pp 1299-1310 (2007)
Annales Geophysicae
Annales Geophysicae, European Geosciences Union, 2007, 25 (6), pp.1299-1310. ⟨10.5194/angeo-25-1299-2007⟩
Annales Geophysicae, 2007, 25 (6), pp.1299-1310. ⟨10.5194/angeo-25-1299-2007⟩
Annales Geophysicae, Vol 25, Pp 1299-1310 (2007)

In two recent studies, Dudok de Wit et al. (2005) and Kretzschmar et al. (2006) have shown that the solar Ultra-Violet spectrum between 25 and 195 nm can be reconstructed from the observation of a set of 6 to 10 carefully chosen spectral lines. The b

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a66bcd06c0a623efd07e5db78d8e7ca
http://www.ann-geophys.net/25/1299/2007/angeo-25-1299-2007.pdf

Variability of the EUV quiet Sun emission and reference spectrum using SUMER

Autor: Jean Lilensten, Matthieu Kretzschmar, J. Aboudarham

Publikováno v: Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, 2004, 419, pp.345-356. ⟨10.1051/0004-6361:20040068⟩

International audience; This paper aims to build a quiet Sun EUV reference spectrum from the SOHO - SUMER database. We make use of 750 quiet Sun spectra spread over a large range of solar activity. They are carefully calibrated both in terms of frequ

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d78d67eb6bdeef33736f8e8ef93a1b60
https://doi.org/10.1051/0004-6361:20040068