AGN

AGN

美 　英

• 網絡活動星系核(active galactic nucleus)；急性腎炎；活躍星系核心(Active Galactic Nuclei)

例句

The survey is sensitive to AGN up to 650 million light-years away and has uncovered dozens of previously unrecognized systems.

這項調查是敏感的活動星系核高達650億光年遠，并發現了先前未知的系統幾十人。

Astronomers call the most energetic of these objects active galactic nuclei, or AGNs, after the powerful jets of radiation they spew.

天文學家們將這些觀測物中最活躍的那些，依據它們噴吐出的強力迸發的輻射稱作活動星系核，英文縮寫為AGN。

LK can be considered as a direct evidence for AGN feedback in galaxy groups and clusters.

LK相關性可作為星系群和星系團中AGN反饋加熱的直接證據。

She argues that once a hole is in place, gas naturally flows into the galaxy core, fueling an AGN.

她認為只要黑洞處在適當的位置，氣體自然而然會流往星系核心，而為AGN加添燃料；

But for decades only about 1 percent of AGN seemed to be associated with galaxy mergers.

但數十年觀測發現僅約百分之一的活動星系核與星系合并有關聯。

The dual AGN of Markarian 739 is the second-closest known, both in terms of distance from one another and distance from Earth.

馬爾卡良雙739的活動星系核是第二已知的最近，無論是在彼此的距離上，從地球的距離。

J. Binney discusses the possible role of violent, episodic heating by AGN in clusters.

學者賓尼討論可能發揮的作用暴力，情節暖氣的活動星系核中的集群。

This highlights the critical importance of high-resolution observations at high X-ray energies in locating binary AGN.

這顯示在二進制活動星系核的定位在高X射線能量高清晰度觀測至關重要。

In some cool core clusters, re-searchers have found central X-ray cavities that are produced by AGN activity.

在冷核星系團中發現了許多中央活動星系核（AGN）活動所造成的X射線空洞，等。

In addition to radiation, AGNs accelerate charged particles that, in turn, generate a magnetic field.

除了輻射外，AGN還會將帶電粒子加速，并因而產生一個磁場。

Two models can explain the AGN well: Black-Hole Disk Model and Uniformed Model.

黑洞-吸積盤模型和統一模型為兩種可用來較好解釋AGN的理論模型。

How did the second AGN remain hidden for so long?

第二個活動星系核是如何保持隱藏了這么久？

He plans to spend another two years comparing black holes with and without jets, hoping to learn more about the properties of AGN.

他計劃再花兩年去對比有無噴發的黑洞，希望以此對AGN特性有更多了解。

We weren't seeing many double AGN, so we turned to Chandra for help.

“我們沒有看到很多雙活動星系核，所以我們求助于錢德拉”。

There are three basic models to interpret the observed AGN variability.

目前，有三種基本的理論模型可以解釋活動星系核的光變。

We also know that some BH mass is accreted after galaxy formation, because low-level AGN activity has been observed in some old galaxies.

同時我們也知道在星系形成之后，一些黑洞的質量仍在增長，因為在一些年長的星系中仍觀測到有低水平的活動星系核活動。

On the other hand, galaxy-mass black holes are found in Active Galactic Nuclei (AGN).

洞常發現存在于活躍的星系核心（agn）。

AGN Variability and Spectral Slope Variability in the Optical Band

活動星系核在光學波段的光度及光譜斜率變化

Gamma-Ray Emissions of AGN and Cosmological Standard Candles

活動星系核的伽瑪輻射和宇宙標準燭光