单词 | scorpius x-1 |
释义 | Scorpius X-1Scorpius X-1The first cosmic X-ray source, discovered during a sounding rocket experiment from White Sands, New Mexico, in June 1962. By an order of magnitude Sco X-1 is the brightest of all non-transient cosmic X-ray sources. Optically identified in 1967 with the 13th magnitude variable star V818 Sco, it was confirmed as a low-mass X-ray binary system with an orbital period of 0.78 days. The distance of Sco X-1 remains uncertain, probably lying in the range 300–600 parsecs. |
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