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发表于 2010-8-13 11:33:46
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回复 2# Youth
nature的报导里有这次发现脉冲星的两位美国志愿者的王道,马里兰大学的 Cole Miller 对这次发现做了一个(我觉得)还算比较中肯的评价:
Cole Miller, an astronomer at the University of Maryland in College Park, says it is nice that the pulsar was detected with Einstein@Home, because it validates the idea of using massive volunteer-computing projects to detect new sources of radiation in astronomical data sets. But he adds that the find is not tremendously noteworthy, as the number of new pulsars found is small compared with the number of redetections, suggesting that the extra computing power has not made a big difference.
从msnbc的报导来看,还发现了另外一颗新的脉冲星(由英国和俄国的志愿者发现的),不过因为还没有经过天文台的观测验证,所以尚未公布。
两篇文章都对这颗脉冲星的特性进行了说明,大致意思是双星系统中的一颗经过超新星大爆炸后变成了中子星(J2007),然后另一颗也变成了不断往外抛出物质的红巨星,J2007也从中吸取了一些物质(导致自转频率增加),然后等到另一颗也发生超新星大爆炸后,两颗星体就各奔东西了,留下了我们现在观测到的这颗J2007。另外,那颗尚未公布的脉冲星是双星系统。 |
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