三世情缘

为什么超大质量黑洞如此之大？他们疯狂地吞食星星。_我的网站

A | 北京时间1月16日，据外媒报道，天文学家对超大质量黑洞的形成有了新的认识。

B | 他们发现黑洞可以残酷地吞噬恒星。目前，首次探测到“恒星吞没事件”。2017年2月，“全空间超新星自动调查”发现了恒星吞噬现象，并将其命名为“2017bgt”。

C |     London, Oct 18 (UNI) Former British military pilots are being lured to China with large sums of money to pass on their expertise to the Chinese military, it is claimed.
Up to 30 former UK military pilots are thought to have gone to train members of China's People's Liberation Army, BBC reported.
The UK is issuing an intelligence alert to warn former military pilots against working for the Chinese military, the BBC said.
Attempts to headhunt pilots are ongoing and had been ramping up recently, Western officials say.
A spokesperson from the Ministry of Defence said the training ​and the recruiting of pilots does not breach any current UK law but officials in the UK and other countries are trying to deter the activity, the report said.
"It is a lucrative package that is being offered to people," said one official. "Money is a strong motivator." Some of the packages are thought to be as much as $270,000.
The retired British pilots are being used to help understand the way in which Western planes and pilots operate, information which could be vital in the event of any conflict, such as over Taiwan.
"They are a very attractive body of people to then pass on that knowledge," a Western official said. "It's taking Western pilots of great experience to help develop Chinese military air force tactics and capabilities."
The UK first became aware of a small number of cases of former military pilots being recruited in 2019 which were dealt with on a case-by-case basis, the BBC said.
The Covid-19 pandemic slowed attempts down, when travel to China was almost impossible but the attempts have now increased, leading to this alert.
The pilots have experience on fast jets and helicopters and come from across the military and not just the Royal Air Force. They have flown Typhoons, Jaguars, Harriers and Tornados.
F-35 pilots are not thought to be involved although China is thought to be interested in them. Some of the pilots are in their late 50s and left the military some time ago.
Pilots of other allied nations have also been targeted.
"We are taking decisive steps to stop Chinese recruitment schemes attempting to headhunt serving and former UK Armed Forces pilots to train People's Liberation Army personnel in the People's Republic of China," a Defence Ministry spokesperson said.
"All serving and former personnel are already subject to the Official Secrets Act, and we are reviewing the use of confidentiality contracts and non-disclosure agreements across Defence, while the new National Security Bill will create additional tools to tackle contemporary security challenges - including this one."
UNI MR。这一事件被认为是吞咽恒星事件或“潮汐崩溃事件”，因为黑洞周围的辐射比2004年观测到的要亮50倍以上。然而，在使用多个望远镜进行了广泛的观察之后，研究人员现在相信这是一种“黑洞进食”的新方法。领导这项研究的以色列特拉维夫大学的本尼·特拉赫滕布罗特博士说：“AT 2017bgt事件的突然亮起提醒我们潜在的潮汐引力。但我们很快意识到这次有点不寻常。这项研究目前发表在《自然天文学杂志》上。

D | 第一条线索是轻添加剂，这在这次潮汐事件中从未被发现。

E | 负责数据收集的Akawi博士强调，我们已经用太空望远镜和地面望远镜观测了这一事件一年多，我们所看到的与我们以前看到的完全不同。这些观察结果与特拉维夫大学的哈盖·内泽尔教授的理论预测相一致，他说：“早在20世纪80年代，我们就预言了一个吞噬周围气体的黑洞会产生轻元素。”特拉克滕勃罗特博士总结说，我们还不确定BLAC突然增加的确切原因。K孔“进料速度”。有许多方法可以加速大黑洞的快速增长，而大黑洞通常发生在较长的时间尺度上。我们想探测更多这样的事件，并通过几个共同工作的望远镜跟踪它们。来自美国、智利、波兰和英国的天文学家使用三种不同的空间望远镜，包括安装在国际空间站上的新的更好的望远镜，参与了观测和分析任务。最后，研究小组确定了另外两个最近报告的黑洞“开放事件”，这些黑洞的辐射特性与AT 2017bgt非常相似。目前科学界有两种关于超大质量黑洞诞生的理论。一个假设是，当一颗大质量恒星坍缩时，“黑洞种子”从一个质量约为太阳质量10-100倍的黑洞中发芽。然后，黑洞的种子通过与其他小黑洞合并并吸收周围的气体而长大。但它们必须以惊人的速度成长，才能达到数十亿年前在年轻宇宙中发现的超大质量黑洞的质量。最近发表的另一项研究支持这一假设，这表明至少有一些非常大的黑洞种子，其质量是太阳质量的10万倍，并且是在巨大的气体云坍塌时直接形成的。在这种情况下，黑洞的增长将开始跳跃，而且非常快。

Current article:http://f8b.bianneixuanbingqinyouxie.buzz/list_zon/gfk32y.html

Published on:13:25:46