NASA NTRS · 19780048586
Nova Ophiuchi 1977 - An X-ray nova
Abstract
This letter reports the observation by the HEAO 1 satellite experiments of the X-ray nova in Ophiuchus discovered by Kaluzienski and Holt (1977), which is designated H1705-25. The SAO/MIT scanning modulation collimator has been used in conjunction with the NRL large-area sky survey to give two possible positions for the X-ray nova, each having errors of 0.3 by 1.8 arcmin. The discovery of a 16.5-magnitude optical nova (Nova Ophiuchi 1977) in one of the error boxes is reported, and the X-ray source is identified with the optical nova. The object is classified as being of the A0620-00 and A1524-61 type; i.e., a low-mass binary system.
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Griffiths, R. E., Gursky, H., Schwartz, D. A., Bradt, H., Doxsey, R., Johnston, M., Friedman, H., Longmore, A., Malin, D. F., Murdin, P.. 1978-04-15. Nova Ophiuchi 1977 - An X-ray nova. https://ntrs.nasa.gov/citations/19780048586
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