| 单词 | x-ray burster |
| 释义 | x-ray burster [`eks´rā `bǝr·stǝr] ASTRONOMY One of a class of celestial x-ray sources which produce bursts of x-rays in the 1-20-kiloelectronvolt range and which are characterized by rise times of less than a few seconds and decay times of a few seconds to a few minutes; the peak luminosity is of the order of 1038 ergs per second (1031 watts) and the sources have an average equivalent temperature of 108 K. |
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