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Galactic Monitor Experiment (GME)

NSSDCA ID: 1975-037A-02

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

Description

The objectives of this experiment were to locate galactic X-ray sources to 15 arc-s and to monitor these sources for intensity variations. The source positions were determined with the use of the modulation collimators of the Extragalactic Experiment during the nominal 2-month observation of the galactic equator. The monitoring of the X-ray sky was accomplished by the use of three slat collimators. One collimator, 1- by 70-deg FWHM, was oriented perpendicular to the equatorial plane of the satellite, while the other two, each 0.5- by 45-deg FWHM, were oriented 30 deg above and 30 deg below the first. The detector behind each collimator was a proportional counter, sensitive from 1.5 to 13 keV, with an effective area of about 100 sq cm. The 1.0-deg collimator had an additional counter of the same area, sensitive from 8 to 50 keV. Three lines of position were obtained for any given source when the satellite was being spun at a steady rotation of 4 arc-min/s about the Z axis. For additional information, see W. H. G. Lewin et al., Ap. J., v. 207, p. L95, 1976.

Alternate Names

  • GME
  • SAS-C/GME

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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