Abstract
Cosmic X-rays in the energy range between 0.2∼10 keV were observed with polypropylene window proportional counters on board a sounding rocket. The field of view crossed the galactic plane in the Sgr region and reached galactic latitudes of 50° and −90°. A new soft X-ray source was found in the Aries-Taurus region. The soft X-ray flux from the direction of NGC 1275 was conspicuous, whereas that of Sgr region source were very weak. The distribution of the intensity of diffuse soft X-rays over the scanned region indicates the galactic emission of soft X-rays.
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Hayakawa, S., Kato, T., Kohno, T. et al. Observation of cosmic soft X-rays. Astrophys Space Sci 17, 30–38 (1972). https://doi.org/10.1007/BF00642539
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DOI: https://doi.org/10.1007/BF00642539