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type="text/css"></style> <div id="ct" class="ct2 wp cl"> <div class="mn"> <div class="bm_haa cl"> <div class="bm_h cl"> <a href="http://www.oecr.com/portal.php?mod=rss&catid=58" class="y xi2 rss" target="_blank" title="RSS">订阅</a><h1 class="xs2">文章</h1> </div></div> <div class="kjkjb"> <div class="bm vw" style="margin-bottom:0;"> <div class="h hm"> <div class="zxtoux"><img src="http://www.oecr.com/uc_server/avatar.php?uid=54876&size=small" /></div> <h1 class="ph">研究发现太阳活动剧烈时期体积会缩小 </h1> <p class="xg1"> 时间：2018-6-14 10:07<a class="zz" href="home.php?mod=space&uid=54876">作者：update</a> 阅读<em id="_viewnum">(720)</em> 评论: <a href="http://www.oecr.com/portal.php?mod=comment&id=6742&idtype=aid" title="查看全部评论"><em id="_commentnum">5</em></a></p> <div class="zxfb" ><a href="http://www.oecr.com/portal.php?mod=rss&catid=58" class="y xi2 rss" target="_blank" title="RSS">订阅</a></div> </div> <!--[diy=diysummarytop]--><div id="diysummarytop" class="area"></div><!--[/diy]--> <div class="s"> <div class="ss"><div><span>导读： </span>太阳非常大。按体积计算，太阳可以容纳大约130万个地球，但是新的研究表明，实际上太阳的大小会发生变化的。</div> </div> <!--[diy=diysummarybottom]--><div id="diysummarybottom" class="area"></div><!--[/diy]--> <div class="d"> <!--[diy=diycontenttop]--><div id="diycontenttop" class="area"></div><!--[/diy]--> <table cellpadding="0" cellspacing="0" class="vwtb"><tr><td id="article_content"><div> 太阳非常大。按体积计算，太阳可以容纳大约130万个地球，但是新的研究表明，实际上太阳的大小会发生变化的。研究人员Alexander Kosovichev和Jean-Pierre Rozelot揭示，在太阳活动剧烈的时期，太阳的半径实际上缩小了2千米。</div><div><br></div><div><p style="text-align: center;"><a href="data/attachment/portal/201806/14/100742d36lifgvbff050ji.jpg" target="_blank"><img src="data/attachment/portal/201806/14/100742d36lifgvbff050ji.jpg"></a></p></div><div><br></div><div> 科学家们收集了大量的数据来研究太阳体积的变化情况，研究20多年的太阳周期，以确定太阳何时收缩和膨胀。</div><div><br></div><div> 他们发现，太阳的每个层的收缩情况不一样，有些层在扩张，有的层在缩小，但最终的结果<a href="http://display.oecr.com" target="_blank" class="relatedlink">显示</a>，太阳活动剧烈的时段，太阳体积的确要小一些。</div><div><br></div><div> <a href="http://opticaltest.oecr.com" target="_blank" class="relatedlink">测量</a>太阳的大小实际上是一个比较麻烦的事情。太阳不是一个岩石体，所以很难确定在测量半径时应该在哪里以在测量半径时真的很难确定切割的位置。</div><div><br></div><div> 为了建立一些具体的测量形式，研究人员在这种情况下使用恒星地震学，通过观察地震波在其中传播的频率来确定太阳的大小。</div><div><br></div><div> 通过检测波的频率变化，科学家们能够估计出太阳大小的变化。最终他们发现，当太阳进入一个剧烈活动的时期时，确实发生了一点收缩。这个时期，太阳粒子会对我们的卫星和<a href="http://ofc.oecr.com" target="_blank" class="relatedlink">通信</a>基础设施产生影响。</div><div><br></div><div> 通过用亮度来观测太阳体积的波动，发现在太阳活动剧烈的时期，太阳体积并没有发生变化太阳的半径大约为70万公里，所以半径缩小2公里的变化是微不足道的，对我们来说并不意味着什么。</div><div><br></div><div><p microsoft="" yahei",="" simsun;="" background-color:="" rgb(255,="" 255,="" 255);="" text-align:="" center;"="" center;="" 255);"="" style="text-align: center; word-wrap: normal; margin: 0px; padding: 0px; color: rgb(143, 143, 143); font-family: Tahoma, "Microsoft Yahei", Simsun; background-color: rgb(255, 255, 255);"><b style="word-wrap: normal;"><font size="5" style="word-wrap: normal;">欢迎关注OECR公众号</font></b></p><p microsoft="" yahei",="" 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name="comment_anchor_17941"></a> <dl id="comment_17941_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(17941, '6742');">引用</a> </span> <a href="http://club.oecr.com/space-uid-80808.html" class="xi2 xw1" c="1">gogo9901</a> <span class="xg1 xw0">2018-6-14 15:34</span> </dt> <dd>我也是坐沙发的</dd> </dl><a name="comment_anchor_17939"></a> <dl id="comment_17939_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(17939, '6742');">引用</a> </span> <a href="http://club.oecr.com/space-uid-64478.html" class="xi2 xw1" c="1">beipanjiang</a> <span class="xg1 xw0">2018-6-14 15:04</span> </dt> <dd>支持，赞一个</dd> </dl><a name="comment_anchor_17938"></a> <dl id="comment_17938_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(17938, '6742');">引用</a> </span> <a 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