NASA NTRS · 19770033184
Detection of X-rays from Algol /beta Persei/
Abstract
X-rays in the 2-6 keV band were detected from the Algol system using the rotating modulation collimator system on SAS-3 during an observation in October 1975. The measured X-ray flux is 3.8 x 10 to the -11th ergs/sq cm/s/keV. No positive detection was made in the 6-11 keV band. The data are consistent with either a power-law spectrum with photon spectral index not less than 2.5 or a thermal bremsstrahlung spectrum with a temperature not greater than 3 x 10 to the 7th K.
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Schnopper, H. W., Delvaille, J. P., Epstein, A., Helmken, H., Murray, S. S., Clark, G., Jernigan, G., Doxsey, R.. 1976-12-01. Detection of X-rays from Algol /beta Persei/. https://ntrs.nasa.gov/citations/19770033184
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