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Fermi Large Area Telescope Observations of the Active Galaxy 4C +55.17: Steady, Hard Gamma-Ray Emission and its Implications
Steady Hard Gamma-Ray Emission Implications
2011/9/29
We report Fermi/LAT observations and broad-band spectral modeling of the radio-loud active galaxy 4C +55.17 (z=0.896), formally classified as a flat-spectrum radio quasar. Using 19 months of all-sky s...
Fermi Telescope Caps its First Year with a Glimpse of Space-Time
Fermi Telescope First Year Space-Time
2009/11/4
During its first year of operations, NASA's Fermi Gamma Ray Space Telescope mapped the extreme sky with unprecedented resolution and sensitivity. It captured more than one thousand discrete sources of...
Iowa State astrophysicists provide the eyes for new gamma ray telescope system（图）
gamma ray telescope system
2007/4/20
19-Apr-2007，AMES, Iowa -- There’s a "First Light Fiesta" in the works at Mt. Hopkins near Amado, Ariz. And Iowa State University astrophysicists will be among those enjoying the celebration of a new t...
