Dictionary of Nomenclature of Celestial Objects (Last update: 15-Nov-2019)
Result of query: info cati 4FGL$
Details on Acronym: 4FGL 4FGL (Fourth Fermi/LAT catalog)
Object:(Gamma) (SIMBAD class: gamma = gamma-ray source)
Note:Fermi is a NASA satellite launched in June 2008. The LAT instrument covers the range 30 MeV to 300 GeV. It provides a gamma-ray all-sky survey. The third Fermi catalog is based on the first 4 yr of science data. More information can be found at http://fermi.gsfc.nasa.gov/ssc/ Format JHHMM.m+DDMMe|i|s: m is decimal minutes of RA; in the name RA and DE are truncated at 0.1 decimal minutes and 1', respectively; the letter at the end can be: "z" (extended source), "i" (for Crab nebula inverse Compton), or "s" (for Crab nebula synchrotron). See also 0FGL, 1FGL, 2FGL, 3FGL.
Originof the Acronym: A = Assigned by the author(s)