radio quiescence

简明释义

无线电沉默

英英释义

例句

1.Researchers noted that the black hole exhibited radio quiescence 无线电静默 for several months before the next active phase.

研究人员注意到黑洞在下一个活跃阶段前经历了几个月的无线电静默 无线电静默。

2.The satellite detected a sudden end to the radio quiescence 无线电静默 phase, suggesting a potential outburst from the source.

卫星探测到无线电静默 无线电静默阶段突然结束，这表明该源可能发生了爆发。

3.The study of radio quiescence 无线电静默 can provide insights into the life cycle of astronomical objects.

对无线电静默 无线电静默的研究可以提供有关天体生命周期的见解。

4.The astronomers observed a period of radio quiescence 无线电静默 in the star, indicating it was not emitting any significant radio waves.

天文学家观察到这颗恒星经历了一段无线电静默 无线电静默，表明它没有发出任何显著的无线电波。

5.During the radio quiescence 无线电静默, scientists were able to study the background noise of the universe without interference.

在无线电静默 无线电静默期间，科学家能够研究宇宙的背景噪声而不受干扰。

作文

In the field of astrophysics, the term radio quiescence refers to a state in which an astronomical object, such as a star or galaxy, emits little to no radio frequency radiation. This phenomenon is particularly significant when studying celestial bodies that are typically active in other wavelengths, such as optical or X-ray emissions. The concept of radio quiescence is essential for understanding the life cycle of stars and galaxies, as well as their interactions with surrounding matter. When a star enters a phase of radio quiescence, it may indicate that the star is in a stable state, often referred to as a 'quiet' phase. During this time, the star's surface may not exhibit the turbulent activity seen during its more energetic phases. This lack of radio emissions can provide astronomers with valuable insights into the internal processes of the star. For instance, a star in radio quiescence might be undergoing nuclear fusion at a steady rate, leading to a more stable output of energy. Furthermore, radio quiescence can also occur in the context of active galactic nuclei (AGN). These powerful regions at the centers of some galaxies can switch between periods of intense activity and relative calm. Understanding when these AGN are in a state of radio quiescence helps researchers determine the accretion rates of material onto supermassive black holes and the effects of such processes on the host galaxy's evolution. The study of radio quiescence is also crucial in the context of transient astronomical events. For example, when a star explodes as a supernova, it may initially emit strong radio waves due to the shock waves produced. However, as the event evolves, it may enter a phase of radio quiescence, where the radio emissions diminish significantly. By monitoring these changes, scientists can gain insights into the physical processes occurring during and after such explosive events. In addition to its applications in stellar and galactic studies, radio quiescence has implications for the search for extraterrestrial life. If planets orbiting stars in radio quiescence are found, it could suggest that those stars are less likely to have hostile environments caused by intense stellar activity. Thus, these planets might be more conducive to supporting life as we know it. In conclusion, the concept of radio quiescence plays a pivotal role in astrophysical research. It provides a framework for understanding the various states of celestial objects and their evolutionary paths. By studying radio quiescence, astronomers can unravel the mysteries of the universe, from the life cycles of individual stars to the dynamics of entire galaxies. As our observational techniques improve, the ability to detect and analyze radio quiescence will undoubtedly enhance our comprehension of the cosmos and our place within it.

在天体物理学领域，术语radio quiescence指的是一种状态，在这种状态下，天文物体（如恒星或星系）几乎不发出任何射电频率辐射。这种现象在研究通常在其他波长（如光学或X射线发射）中活跃的天体时尤为重要。radio quiescence的概念对于理解恒星和星系的生命周期以及它们与周围物质的相互作用至关重要。当一颗恒星进入radio quiescence阶段时，这可能表明恒星处于稳定状态，通常称为“安静”阶段。在此期间，恒星的表面可能不会表现出在更能量丰富阶段所见的动荡活动。这种缺乏射电发射可以为天文学家提供有关恒星内部过程的有价值见解。例如，一颗处于radio quiescence的恒星可能以稳定的速率进行核聚变，从而导致能量输出更为稳定。此外，radio quiescence也可能发生在活动星系核（AGN）的背景下。这些位于某些星系中心的强大区域可以在剧烈活动和相对平静之间切换。了解这些AGN何时处于radio quiescence状态，有助于研究人员确定物质向超大质量黑洞的吸积率，以及这种过程对宿主星系演化的影响。对radio quiescence的研究在瞬态天文事件中也至关重要。例如，当一颗恒星作为超新星爆炸时，由于产生的冲击波，它可能最初会发出强烈的射电波。然而，随着事件的发展，它可能进入radio quiescence阶段，射电发射显著减弱。通过监测这些变化，科学家可以深入了解在此类爆炸事件期间及其后的物理过程。除了在恒星和星系研究中的应用，radio quiescence对寻找外星生命也具有重要意义。如果发现环绕处于radio quiescence状态的恒星的行星，这可能表明这些恒星不太可能因强烈的恒星活动而造成敌对环境。因此，这些行星可能更有利于支持我们所知的生命。总之，radio quiescence的概念在天体物理研究中发挥着关键作用。它为理解天体的各种状态及其演化路径提供了框架。通过研究radio quiescence，天文学家可以揭开宇宙的奥秘，从单颗恒星的生命周期到整个星系的动态。随着我们的观测技术不断提高，探测和分析radio quiescence的能力无疑将增强我们对宇宙及我们在其中位置的理解。