查询词典 quasar

In the late 1990s, Brotherton discovered a candidate for such a transition object, which possessed the spectral signatures of both a quasar and an older starburst.

上个世纪九十年代末期，布罗瑟通发现了一个跃升态星体，它同时具有类恒星体和晚期星暴的光谱特征。

From Karlsson's formula and the polar effect, we realize that the half periodic parameter of redshift is 0.206, in theory, we finally explain why the great wall is at redshift Z=0.079 in redshift space; We have defined quasar as the early star nearby the position poles and opposite poles, and given the answer for two difficult problems of theirs; Based on the course of explanation for redshift space, we have reason to think that our universe might be the linear expansion hyperspherical universe.

从Karlsson公式及极点效应，我们认识到红移的半周期参数为0.206，最终从理论上解释了为什么红移长城在红移空间的位置为 Z=0.079；我们定义类星体为在位置极点和异极点附近的早期恒星，进而给出与其相关的两个难题的答案；基于对红移空间的解释过程，我们有理由认为我们的宇宙是线性膨胀超球面宇宙。

A test will come soon: Starting this fall, Princeton astronomer Michael Strauss and his SDSS partners will use the Hubble Space Telescope to examine dozens of quasars, including their four most distant ones, for multiple images--the signpost of a lensed quasar.

然而，今年秋天普林斯顿大学的天文学家Michael Strauss和他SDSS的搭档们将进行一项尝试：使用哈勃太空望远镜来研究众多的类星体，包括他们发现的最遥远的四个，获取它们的多重图象--这是受引力透镜影响的类星体的重要标志。

The study about the flux and index of gamma-ray loud blazars show:(1)there is significant correlation between the luminosities in gamma-ray and VLBI radio energy band;(2)there are strong anticorrelarions among the observed indices of soft X-ray, hard X-ray and gamma-ray. For the FSRQs, the whole X-ray emission was contributed by synchrotron self-Compton emission, for the HBLs, the X-ray emission was dominated by synchrotron emission while the soft X-ray emission is dominated by synchrotron emission and the SSC emission dominate the hard X-ray energy band for LBLs;(3) there are strong radio-radio and radio-optical flux correlations for the quasar 3C 273. The higher frequency emission leads those in lower frequency. The multi-band complex indices strongly correlated with the high frequency flux which implies that the object is becoming bright when the energy spectrum is harden.

通过对γ噪Blazar天体的谱指数、流量的相关研究，发现（1）51个样本blazar的γ射线光度与VLBI光度之间存在显著相关；（2）软X、硬X以及γ波段的观测谱指数之间存在较强的反相关，对FSRQs，无论是硬X射线还是软X射线的辐射都是逆康普顿辐射的贡献，而对于HBLs来说，则是同步辐射的贡献，对LBLs，在软X射线波段以同步辐射贡献为主，在硬X射线能区以逆康普顿贡献为主；（3）3C 273的射电各个波段以及光学之间存在强相关，高频辐射一直领先低频辐射，3C 273的多波段复合谱指数和高频流量之间存在强的反相关，意味着当能谱变硬时对象变亮。

In order to battle these evil creatures and protect the planet, the heroes pull Quasar Sabers from a stone, and use their powers to become Power Rangers.

为了击败这些邪恶的生物保护星球，我们的英雄从神石的石缝中拔出了恒星之剑，用它们的神力变身成为超能战队！

From these analyses, we found that the spectral index is higher than,and gained that the evolution of AGNS could be from high-energy objects to the low-energy objects,such as BL Lac objects to the low-polarizble Quasar. In the paper, we also studied the possible correlations of the redshift and the spectral index and flux densities for different wavebands.

同时本论文还对活动星系核的各波段的流量密度进行了分析，得出：活动星系核的演化是由流量密度大的天体演化到流量密度小的天体；活动星系核的各波段辐射流量存在线性相关性，尤其是BL Lac的各波段辐射流量的线性相关特别突出。

Quasar is short for quasi-stellar radio source.

类星体是&类似恒星射电源&的缩写。

Objective To study the effect of chitosan in the prevention of fibrous scar formation in the epidural space after laminectomy.

目的 观察选择性脊神经后根切除术椎板切除后硬膜外几种防瘢痕粘连物质的作用并探讨其机制。

On his way to the lift, he looked back to us or was it me his eyes pointing?

当他要进电梯时，他回头看我们（或者说是我，他的眼光？