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X-Ray Astronomy Satellite Ginga and Observations

  • F. Makino

Abstract

The x-ray astronomy satellite Ginga carries three scientific instruments, the Large Area proportional Counters (LAC), All Sky x-ray Monitor (ASM) and Gam ma-ray Burst Detector (GBD). The LAC is the main instrument with an effective area of 4000 cm2 giving it the highest sensitivity to hard x-rays so far achieved. Ginga observed about 250 targets up to the end of 1989. Important results are the discovery of cyclotron absorption features in x-ray spectra from several x-ray pulsars, the discovery of transient x-ray pulsars in the region of 5 kpc ring of the Galaxy, the discovery of diffuse iron line emission peaked at the Galactic center, the detection of x-ray scattering by cosmic dust grains, the discovery of red-shifted iron line emission from quasars, the detection of spectral structures and variations of Seyfert galaxies and the detection of x-rays from SN 1987A.

Keywords

Galactic Center Cosmic Dust Magnetic Torquer Iron Line Seyfert Galaxy 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Tokyo 1991

Authors and Affiliations

  • F. Makino
    • 1
  1. 1.Institute of Space and Astronautical ScienceKanagawaJapan

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