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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=57" 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">黑洞双星X射线光变起源研究获进展 </h1> <p class="xg1"> 时间：2025-7-7 08:50<a class="zz" href="home.php?mod=space&uid=54876">作者：update</a> 阅读<em id="_viewnum">(147)</em> 评论: <a href="http://www.oecr.com/portal.php?mod=comment&id=10294&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=57" 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>银河系内多数黑洞和中子星双星是高能暂现源，在偶尔发生的吸积爆发过程中，黑洞和中子星通过吸积伴星物质，在致密天体附近释放引力能并产生X射线辐射。因此，X射线辐射携带了黑洞和中子星及其附近强引力场等关键信息 ...</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"><p style="margin-top: 0px; margin-right: 0px; margin-left: 0px; padding: 0px; border: 0px; list-style: none; font-size: 16px; font-family: 微软雅黑; color: rgb(68, 68, 68); background-color: rgb(255, 255, 255); text-indent: 2em; text-align: justify; margin-bottom: 26px !important; line-height: 32px !important;"><span style="margin-top: 0px; margin-right: 0px; margin-left: 0px; padding: 0px; border: 0px; list-style: none; text-indent: 0em; margin-bottom: 26px !important; line-height: 32px !important;">银河系内多数黑洞和中子星双星是高能暂现源，在偶尔发生的吸积爆发过程中，黑洞和中子星通过吸积伴星物质，在致密天体附近释放引力能并产生X射线辐射。因此，X射线辐射携带了黑洞和中子星及其附近强引力场等关键信息，而X射线光变成为探测致密天体性质、强引力场及强磁场<a href="http://theory.oecr.com" target="_blank" class="relatedlink">物理</a>的重要观测手段。<span style="margin-top: 0px; margin-right: 0px; margin-left: 0px; padding: 0px; border: 0px; list-style: none; margin-bottom: 26px !important; line-height: 32px !important;">在傅里叶功率谱上，</span>黑洞和中子星X射线双星的X射线光变主要包括幂率噪声（</span><span style="margin-top: 0px; margin-right: 0px; margin-left: 0px; padding: 0px; border: 0px; list-style: none; text-indent: 0em; margin-bottom: 26px !important; line-height: 32px !important;">PLN）、带限噪声（</span><span style="margin-top: 0px; margin-right: 0px; margin-left: 0px; padding: 0px; border: 0px; list-style: none; text-indent: 0em; margin-bottom: 26px !important; line-height: 32px !important;">BLN）及准周期振荡信号（</span><span style="margin-top: 0px; margin-right: 0px; margin-left: 0px; padding: 0px; border: 0px; list-style: none; text-indent: 0em; margin-bottom: 26px !important; line-height: 32px !important;">QPOs）等。其中，BLN是黑洞和<span style="margin-top: 0px; margin-right: 0px; margin-left: 0px; padding: 0px; border: 0px; list-style: none; margin-bottom: 26px !important; line-height: 32px !important;">小质量</span>中子星X射线双星在X射线硬谱态和中间谱态的主要光变成分。</span></p><p style="margin-top: 0px; margin-right: 0px; margin-left: 0px; padding: 0px; border: 0px; list-style: none; font-size: 16px; font-family: 微软雅黑; color: rgb(68, 68, 68); background-color: rgb(255, 255, 255); text-indent: 2em; text-align: justify; margin-bottom: 26px !important; line-height: 32px !important;"><span style="margin-top: 0px; margin-right: 0px; margin-left: 0px; padding: 0px; border: 0px; list-style: none; margin-bottom: 26px !important; line-height: 32px !important;">近日，中国科学院上海天文台<span style="margin-top: 0px; margin-right: 0px; margin-left: 0px; padding: 0px; border: 0px; list-style: none; margin-bottom: 26px !important; line-height: 32px !important;">研究员</span>余文飞团队在黑洞双星X射线快速光变研究方面取得进展。</span>该团队利用慧眼卫星对暂现黑洞双星MAXI J1820+070吸积爆发的观测发现，BLN特征频率范围具有明显的光子能量依赖，即随着光子能量增加，该平台分别向高频（>10Hz）和低频（<0.1Hz ）两端同时扩展，且相对光变幅度随光子能量增加而下降。同时，该趋势极限与X射线软谱态观测到的由吸积盘黑体辐射产生的幂率光变成分类似。</p><p style="margin-top: 0px; margin-right: 0px; margin-left: 0px; padding: 0px; border: 0px; list-style: none; font-size: 16px; font-family: 微软雅黑; color: rgb(68, 68, 68); background-color: rgb(255, 255, 255); text-indent: 2em; text-align: justify; margin-bottom: 26px !important; line-height: 32px !important;"><span style="margin-top: 0px; margin-right: 0px; margin-left: 0px; padding: 0px; border: 0px; list-style: none; margin-bottom: 26px !important; line-height: 32px !important;">此前，科研人员曾发现暂现黑洞和中子星低质量X射线双星中主要光变成分，如BLN和低频QPO具有对应的统一起源，且黑洞双星时变-功率谱态<span style="margin-top: 0px; margin-right: 0px; margin-left: 0px; padding: 0px; border: 0px; list-style: none; margin-bottom: 26px !important; line-height: 32px !important;">具有</span>光子能量依赖，并与观测能段对应的主要谱成分有关，这颠覆了黑洞双星X射线时变功率谱态图像。进一步，该团队发现黑洞双星中BLN高频端特征频率与光子能量依赖。而此次研究发现，BLN低频端特征频率也具有光子能量依赖，这与之前发现的BLN高频端特征频率的光子能量依赖形成了完整图像，揭示了BLN功率平台及其特征频率的本质起源。</span></p><p style="margin-top: 0px; margin-right: 0px; margin-left: 0px; padding: 0px; border: 0px; list-style: none; font-size: 16px; font-family: 微软雅黑; color: rgb(68, 68, 68); background-color: rgb(255, 255, 255); text-indent: 2em; text-align: justify; margin-bottom: 26px !important; line-height: 32px !important;">该研究表明，BLN特征光变来自吸积盘局域范围种子光子携带的原初盘光变信息，这些种子光子通过逆康普顿过程产生了可观测的X射线光变。由于黑洞和中子星小质量X射线双星BLN具有统一的起源，这一研究或解决了黑洞和中子星小质量X射线双星中<span style="margin-top: 0px; margin-right: 0px; margin-left: 0px; padding: 0px; border: 0px; list-style: none; margin-bottom: 26px !important; line-height: 32px !important;">BLN</span>X射线光变成分起源问题<span style="margin-top: 0px; margin-right: 0px; margin-left: 0px; padding: 0px; border: 0px; list-style: none; margin-bottom: 26px !important; line-height: 32px !important;">，并揭示了与之对应的吸积和辐射几何图像。</span></p><p style="margin-top: 0px; margin-right: 0px; margin-left: 0px; padding: 0px; border: 0px; list-style: none; font-size: 16px; font-family: 微软雅黑; color: rgb(68, 68, 68); background-color: rgb(255, 255, 255); text-indent: 2em; text-align: justify; margin-bottom: 26px !important; line-height: 32px !important;"><span style="margin-top: 0px; margin-right: 0px; margin-left: 0px; padding: 0px; border: 0px; list-style: none; margin-bottom: 26px !important; line-height: 32px !important;"><span style="margin-top: 0px; margin-right: 0px; margin-left: 0px; padding: 0px; border: 0px; list-style: none; margin-bottom: 26px !important; line-height: 32px !important;">近期，相关研究成果发表在《天体物理学杂志》（<em style="margin-top: 0px; margin-right: 0px; margin-left: 0px; padding: 0px; border: 0px; margin-bottom: 26px !important; line-height: 32px !important;">The Astrophysical Journal</em>）上。</span>研究工作得到国家自然科学基金委员会的</span><span style="margin-top: 0px; margin-right: 0px; margin-left: 0px; padding: 0px; border: 0px; list-style: none; margin-bottom: 26px !important; line-height: 32px !important;">支持。</span></p><p style="text-align: center;"><a href="data/attachment/portal/202507/07/085014qvl9cbacalbn49sv.png" target="_blank"><img src="data/attachment/portal/202507/07/085014qvl9cbacalbn49sv.png"></a></p><p style="margin-top: 0px; margin-right: 0px; margin-left: 0px; padding: 0px; border: 0px; list-style: none; font-size: 16px; line-height: 1.5em; font-family: 微软雅黑; color: rgb(68, 68, 68); background-color: rgb(255, 255, 255); text-indent: 2em; text-align: justify; margin-bottom: 26px !important;">左图：黑洞双星MAXI J1820+070的慧眼卫星单次观测随光子能量变化的傅里叶功率谱。 右图：带限噪声平台与光子能量和吸积与逆康普顿散射的物理图像。</p><p style="margin-top: 0px; margin-right: 0px; margin-left: 0px; padding: 0px; border: 0px; list-style: none; font-size: 16px; line-height: 1.5em; font-family: 微软雅黑; color: rgb(68, 68, 68); background-color: rgb(255, 255, 255); text-indent: 2em; text-align: justify; margin-bottom: 26px 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