Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978mnras.183p..11w&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 183, Apr. 1978, p. 11P-15P.
Astronomy and Astrophysics
Astronomy
57
Astronomical Spectroscopy, Magellanic Clouds, X Ray Sources, Ariel 5 Satellite, Collimators, Radio Bursts, Stellar Luminosity
Scientific paper
Ariel 5 observed two X-ray outbursts from the LMC in June and July 1977; the events were separated by 17 days and each lasted several hours. The data are consistent with both outbursts being due to a previously unreported transient source designated A0538-66. No evidence was found for regular pulsations. A spectrum obtained near the peak of activity was best represented by a thermal plus Gaunt model with a temperature of 6.5 keV and a 2-sigma upper limit to a low-energy turnover of 2 by 10 to the 22nd power hydrogen atom per sq cm. If this source is in the LMC, the peak flux represents a luminosity of 8.5 by 10 to the 38th power erg/s.
Carpenter G. F.
White Nicholas E.
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