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超新星

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Models of element synthesis during the supernova explosions predict that the abundance ratios of actinides with respect to other stable elements heavier than iron are very sensitive to the environment of the explosion, such as the entropy and the ratios of protons, neutrons and electrons.

模型元素的合成,在超新星爆炸预言的丰度比锕对于其他稳定更重的元素,比铁很敏感,对环境造成的爆炸,如熵和比例的质子,中子和电子。

In particular, they study the polarization properties of this kind of supernova in order to learn more about their asphericity, which holds important clues to the detailed physics that governs this terminal catastrophe in the life of such stars.

他们主攻的目标是研究这类超新星的极性,以了解其非球对称特征。在执掌这类恒星最终毁灭命运的物理机制中,这种非球对称性占据着重要的线索地位。

At this rate, Betelgeuse is speeding through its remaining mass and is set to die in a supernova explosion within the next 10,000 years.

按照现在的速度,参宿四所剩下的质量正在超速减少,在其后1万年之内,会以超新星爆发的方式结束璀璨的一生。

The complex nebula is thought to be a supernova remnant over a million years old, sprawling across the southern constellations Vela and Puppis. Sliding your cursor over this spectacular wide field view will reveal the location of objects embedded in The Gum Nebula, including the Vela supernova remnant.

散布 在南天星座的船尾座和船帆座附近的天区,这复杂的区域被认为是超过百万年前的超新星爆炸的遗迹澳洲的天文学家Colin Stanley Gum (1924-1960)对这个星云命名,将你的滑鼠指向这壮丽的照片可以显示出藏在星云内的星体,包含船帆座超新星爆炸的遗迹。

It was the closest supernova since SN 1604, which occurred in the Milky Way itself.

这是超新星1604发现以来,银河中距地球最近的超新星

The absence of a central point source is consistent with other evidence that Tycho is a Type Ia supernova, which is thought to signal the detonation and destruction of a white dwarf star.

中央点源的缺席与其他证据一致,表明第谷遗迹源于 Ia 型超新星爆发。人们认为此类超新星是白矮星爆炸毁灭的标志。

They added those to 170 previously analyzed supernovae, then looked for trends in deceleration and acceleration.

他们将这些超新星添加到170颗先前分析过的超新星中,然后开始寻找减速和加速的趋势。

The Crab Nebula is what remains of the supernova of the year 1054, and inasmuch as it has been theorized that neutron stars sometimes remain following supernova explosions, it is beli ...

The Crab Nebula 是1054年超新星留下的残余部分,因为中子星会在超新星爆炸会余留下来的理论已被证实,这来自 Crab Nebula 的 pilsa 就有根有据的被认为是一颗中子星。

By observing Cepheids with very similar properties at near-infrared wavelengths in all seven galaxies, and using the same telescope and instrument, the team was able to more precisely calibrate the luminosity of supernovae.

通过很相似的方法,在全部7个星系中用相同的望远镜和仪器,在近红外波段观测造父变星和超新星,团队能够更加精确地校准Ia超新星的光度。

The new technique reduced the distance ladder to three "rungs":(1) The distance to galaxy NGC4258 is measured using straightforward geometry and Kepler's laws;(2)Cepheids in six more distant galaxies are used to calibrate the luminosity of Type Ia supernovae;(3) The Hubble constant is measured by observing a brighter milepost marker, Type Ia supernovae, in more distant galaxies hundreds of millions of light-years away, embedded in the expanding universe.

这种新技巧简化了距离跳跃为三个&阶梯&:1、星系NGC 4258的距离采用开普勒定律和简单直接的几何方法精确测量;2、在6个更远的星系中的造父变星用来校准Ia超新星的光度;3、深嵌于数亿光年外的膨胀宇宙中的星系中的Ia超新星——一种遥远而明亮的量天尺,被用于精确测定哈勃常数。

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The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。

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