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Galactic Absorption Experiment (GAE)

NSSDCA ID: 1975-037A-04

Mission Name: SAS-C
Principal Investigator:Dr. George W. Clark

Description

The density and distribution of interstellar matter was determined by measuring the variation in the intensity of the low-energy diffuse X-ray background as a function of galactic latitude. A 1-micrometer polypropylene window proportional counter was used for the 0.1- to 0.4-keV and 0.4- to 1.0-keV energy ranges, while a 2-micrometer titanium window counter covered the energy range from 0.3 to 0.5 keV. In addition, two 1-mm beryllium window counters were used for the 1.0- to 10-keV energy range. The collimators in this experiment had fields of view of 3 deg for the 1-micrometer counter, 2 deg for the 2-micrometer counter, and 2 deg for the 1-mm counters. For additional information, see D. R. Hearn et al., Ap. J., v. 203, p. L21, 1976.

Alternate Names

  • GAE
  • SAS-C/GAE

Facts in Brief

Mass: 75.3 kg
Power (avg): 17.5 W

Funding Agency

  • NASA-Office of Space Science (United States)

Discipline

  • Astronomy: X-Ray

Additional Information

Questions and comments about this experiment can be directed to: Coordinated Request and User Support Office

 

Personnel

NameRoleOriginal AffiliationE-mail
Dr. Robert W. RascheGeneral ContactMassachusetts Institute of Technologyrrasche@as.arizona.edu
Dr. Hale V. BradtOther InvestigatorMassachusetts Institute of Technologyhale@mit.edu
Dr. Walter H. G. LewinOther InvestigatorMassachusetts Institute of Technologylewin@space.mit.edu
Dr. Herbert W. SchnopperOther InvestigatorDanish Space Research Institute
Dr. George W. ClarkPrincipal InvestigatorMassachusetts Institute of Technologygwc@space.mit.edu
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