cosmic high-energy gamma-rays
1High Energy Stereoscopic System — or H.E.S.S. is a next generation system of Imaging Atmospheric Cherenkov Telescopes (IACT) for the investigation of cosmic gamma rays in the 100 GeV and TeV energy range. The acronym was chosen in honour of Victor Hess, who was the first to… …
2High Energy Astronomy Observatory 3 — The last of NASA s three High Energy Astronomy Observatories, HEAO 3 was launched 20 September 1979 on an Atlas Centaur launch vehicle, into a nearly circular, 43.6 degree inclination low Earth orbit with an initial perigee of 486.4 km.The normal …
3High Energy Astrophysical Observatory — one of a series of three U.S. satellites launched (1977 79) into orbit around the earth and equipped with instruments for studying high energy phenomena, as x rays, gamma rays, and cosmic rays. Abbr.: HEAO * * * …
4High Energy Astrophysical Observatory — one of a series of three U.S. satellites launched (1977 79) into orbit around the earth and equipped with instruments for studying high energy phenomena, as x rays, gamma rays, and cosmic rays. Abbr.: HEAO …
5Cosmic-ray observatory — A cosmic ray observatory is a scientific installation built to detect high energy particles coming from space called cosmic rays. This typically includes photons (high energy light), electrons, protons, and some heavier nuclei, as well as… …
6cosmic ray — Physics. a radiation of high penetrating power that originates in outer space and consists partly of high energy atomic nuclei. [1920 25, Amer.] * * * High speed particle (atomic nucleus or electron) that travels through the Milky Way Galaxy.… …
7Gamma-ray astronomy — is the astronomical study of the cosmos with gamma rays. Early history Long before experiments could detect gamma rays emitted by cosmic sources, scientists had known that the universe should be producing these photons. Work by Eugene Feenberg… …
8Ultra-high-energy cosmic ray — Unsolved problems in physics Why is it that some cosmic rays appear to possess energies that are theoretically too high? In high energy physics, an ultra high energy cosmic ray (UHECR) or extreme energy cosmic ray (EECR) is a cosmic ray with an… …
9Reuven Ramaty High Energy Solar Spectroscopic Imager — (RHESSI, or more rarely Explorer 81) is the sixth mission in the line of NASA Small Explorer missions (also known as SMEX). Launched on 5 February 2002, its primary mission is to explore the basic physics of particle acceleration and explosive… …
10Cosmic ray — For the film, see Cosmic Ray (film). Cosmic radiation redirects here. For some background types of cosmic radiation, see cosmic background radiation and cosmic background. The energy spectrum for cosmic rays Cosmic rays are energetic charged… …
