intrinsic brightness

without understanding the physics of these explosions, the estimate of their intrinsic brightness is very uncertain, he says.

不了解这些爆发的物理学性质，他们的固有亮度的估计非常靠不住，他说。

The supernovae glow with the same intrinsic brightness, so by measuring how bright they appear on the sky, astronomers can tell how far away they are.

这些超新星有着一致的本征亮度，因此测出它们的视亮度，天文学家就知道它们离我们有多远。

type ia supernovae all explode with nearly the same amount of energy and therefore have almost the same intrinsic brightness.

Ia超新星爆发时辐射的能量几乎相等，因而具有几乎相同的本征亮度。

that method involves searching for celestial objects, called "standard candles" , whose intrinsic brightness is known.

这种方法的具体做法是找到被称为“标准烛光”的天体，这一类天体的固定亮度是已知的。

A suitable method for finding the intrinsic brightness of a star was discovered by the American astronomer W. S. Adams.

美国天文学家W·S亚当斯发现了一种求恒星固有亮度的好办法。

researchers then compare the supernova's intrinsic brightness with its reduced brightness as viewed from earth.

研究人员然后将超新星的固有亮度跟从地球上所看到的减弱后的亮度作以对比。

That method involves searching for celestial objects, called" standard candles", whose intrinsic brightness is known.

这种方法的具体做法是找到被称为“标准烛光”的天体，这一类天体的固定亮度是已知的。