搜索结果: 1-3 共查到“紫外天文学 Observations”相关记录3条 . 查询时间(0.053 秒)
The long-lasting activity of 3C 454.3. GASP-WEBT and satellite observations in 2008-2010
galaxies: active – galaxies: quasars: general – galaxies: quasars: individual: 3C 454.3 – galaxies: jets
2011/9/28
We present multiwavelength observations of 3C 454.3 from April 2008 to March 2010. The radio to optical data are mostly from the GASP-WEBT, UV and X-ray data from Swift, and gamma-ray data from the AG...
Multiwavelength campaign on Mrk 509. VI. HST/COS observations of the far-ultraviolet spectrum
Galaxies: Active – Galaxies: Individual (Mrk 509) – Galaxies: Quasars: Absorption Lines – Galaxies: Seyfert –Ultraviolet: Galaxies – X-Rays: Galaxies
2011/9/27
We present medium resolution (R~20,000) HST/COS ultraviolet spectra covering 1155-1760 A of the Seyfert 1 Mrk 509 obtained simultaneously with a Chandra/LETGS spectrum as part of a multiwavelength cam...
Ultraviolet Spectroscopic Observations of Coronal Streamers in the SOHO Era
Sun corona ultraviolet
2010/9/16
Measurements made with the Ultraviolet Coronagraph Spectrometer (UVCS) on the Solar and Heliospheric Observatory can be used to determine physical parameters in the solar corona such as hydrogen and i...