| Zugriffsnummer | 29202 |
| Dokumenttyp | Zeitschriftenartikel |
| Sprache | Englisch |
| Titel | Solar irradiances and radiances of UV and EUV lines during the minimum of sunspot activity in 1996 |
| Autor(in); Institution |
Wilhelm, K.; Max-Planck-Institut für Aeronomie, Katlenburg-Lindau, GERMANY
Lemaire, P.; Institut d' Astrophysique Spatiale, Unité Mixte CNRS-Université Paries, Orsay, FRANCE
Dammasch, I. E.; Max-Planck-Institut für Aeronomie, Katlenburg-Lindau, GERMANY
Hollandt, Jörg; 7.11, UV- und VUV-Radiometrie, PTB-Berlin
Schühle, Udo; Max-Planck-Institut für Aeronomie, Katlenburg-Lindau, GERMANY
Curdt, W.; Max-Planck-Institut für Aeronomie, Katlenburg-Lindau, GERMANY
Kucera, T.; NASA Goddard Space Flight Center, Greenbelt, MD, USA
Hassler, D. M.; Southwest Research Institute, Boulder, CO, USA
Huber, Martin C. E.; ESA, Space Science Department, Nordwijk, THE NETHERLANDS
|
| Quelle/Jahr | Astronomy and Astrophysics: 334 (1998), 2, 685 - 702 |
| ISSN | 0004-6361 (PRINT) ; 1432-0746 (ONLINE) |
| URL | |
| Verlag | Les Ulis: EDP Sciences |
| Freie Schlagworte | Sun: corona ; Sun: transition region ; Sun: UV radiation ; Sun: activity |
| Zusammenfassung | Full Sun observations in UV and EUV emission lines were performed by SUMER (Solar Ultraviolet Measurements of Emitted Radiation) on SOHO (Solar and Heliospheric Observatory) in 1996. The radiometric pre-flight calibration of SUMER is traceable to a primary radiometric source standard - the electron storage ring BESSY. Based on this calibration, the irradiance values at SOHO and at 1 AU have been obtained for the lines He I (λ 584.33 Å), O V (λ 629.74 Å), Ne VIII (λ 770.41 Å), S V (λ 786.47 Å), O IV (λ 787.72 Å), S VI (λ 933.39, 944.52 Å), H I Ly λ (λ 937.80 Å), C III (λ 977.04 Å), N V (λ 1238.81 Å), Si I (λ 1256.52 Å), and C IV (λ 1548.20 Å). The spatially resolved measurements allowed good estimates to be made of the active region contributions to the irradiance of the quiet Sun. The centre-to-limb radiance variations of these lines have also been obtained from these measurements. For quiet solar conditions, a radiance spectrum was determined for wavelengths from 800 Å to 1500 Å near the centre of the solar disk. |
Zitierung
Wilhelm, K., Lemaire, P., Dammasch, I. E., Hollandt, J., Schühle, U., Curdt, W., Kucera, T., Hassler, D. M., & Huber, M. C. E. (1998). Solar irradiances and radiances of UV and EUV lines during the minimum of sunspot activity in 1996. Astronomy and Astrophysics, 334(2), 685–702.