2001/12/01 by F.–X. Désert, F. -Xavier Desert, Desert, F. -Xavier +2
Physics and Astronomy · #Astrophysics (astro-ph) #Astrophysics and Cosmic Phenomena #FOS: Physical sciences #Radio Astronomy Observations and Technology #Superconducting and THz Device Technology #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/0112010
4 pages, no figure, to appear in Proceedings of the 2001 Guy Serra Symposium on ``Submillimeter Space Astronomy: A Window on the Cold Universe'', Toulouse, France, 11-13 June 2001, Eds. M. Giard et al
arxiv created 2001/12/01 · openalex publication_date 2001/12/01 · arxiv updated 2009/12/01 · openalex created_date 2022/10/05 · openalex updated_date 2026/07/28
The Cosmic Microwave Background Radiation is the oldest photon radiation that\ncan be observed, having been emitted when the Universe was about 300,000 year\nold. It is a blackbody at 2.73 K, and is almost perfectly isotropic, the\nanisotropies being about one part to 100,000. However, these anisotropies,\ndetected by the COBE satellite in 1992, constrain the cosmological parameters\nsuch as the curvature of the Universe. Archeops is a balloon-borne experiment\ndesigned to map these anisotropies. The instrument is composed of a 1.5 m\ntelescope and bolometers cooled at 85 mK to detect radiation between 150 and\n550 GHz. To lower parasitic signals, the instrument is borne by a stratospheric\nballoon during the arctic night. This instrument is also a preparation for the\nPlanck satellite mission, as its design is similar to HFI. We discuss here the\nresults of the first scientific flight from Esrange (near Kiruna, Sweden) to\nRussia on January 29th 2001, which led to a 22 % (sub)millimetre sky coverage\nunprecedented at this resolution. Here, we put some emphasis on interstellar\ndust foreground emission observations.\n