The Nuclear Astrophysics Explorer

Details The Nuclear Astrophysics Explorer The Nuclear Astrophysics Explorer

Aug 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990aipc..211..343m&link_type=abstract

IN: High-energy astrophysics in the 21st century; Proceedings of the Workshop, Taos, NM, Dec. 11-14, 1989 (A91-47977 20-90). New

Astronomy and Astrophysics

Astrophysics

3

Gamma Ray Astronomy, Nuclear Astrophysics, Spaceborne Astronomy, Explorer Satellites, Nasa Space Programs

Scientific paper

The Nuclear Astrophysics Explorer (NAE) is a concept for a possible future NASA Explorer mission which would obtain high resolution, E/Delta E about 500, observations of gamma-ray lines in order to study many fundamental problems in astrophysics. It operates from 15 keV to 10 MeV with a 3-sigma sensitivity of about 3 x 10 to the -6th ph/sq cm-s in a 10 to the 6th s observation. This is 100 times below the presently known gamma-ray line fluxes. The NAE uses a heavily shielded array of nine cooled Ge detectors in a very low background configuration. Its 10-deg field of view contains a versatile coded mask system which provides 2D imaging with 4-deg resolution, 1D imaging with 2-deg resolution and efficient measurements of emission from diffuse and point sources. The late 1990s is the earliest the NAE mission could begin. The scientific motivation, instrument concept, mission concept and expected results, and status and plans for the NAE are presented.

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