arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0812.3130astro-ph
收藏

射电强AGN喷流中Beta_(app)-z分布的特殊形状在局域类星体模型中得到简单自然的解释

The Peculiar Shape of the Beta_(app)-z Distribution Seen in Radio Loud AGN Jets Is Explained Simply and Naturally In the Local Quasar Model

M. B. Bell

摘要:

最近,有人认为106,000个AGN星系的log(z)- m_{v}图可以解释为局部AGN星系随着年龄的增长所遵循的演化路径。有人认为,这些物体是作为类星体诞生的,具有随时间而减少的高本征红移分量。当内禀分量很大时,在log(z)- m_{v}图上,它使它们被推到最亮射电星系的标准烛光线以上。在射电噪活动星系核的喷流中,β_(app)是喷出物质相对于光速的视横向速度。在宇宙学红移(CR)模型中,Beta_(app)对z的分布具有一种特殊的形状,人们曾多次尝试对其进行解释,与用来解释log(z)- m_{v}图的模型一致,这里显示Beta_(app)的奇特形状-在计算Beta_(app)时,如果源是局域的,但它们的大本征红移被假定为宇宙学的,那么CR模型中的z分布正好是所期望的.这一结果不仅支持我们先前对log(z)- m_{v}图的解释,而且进一步暗示,如果红移的一个大分量是本征的,那么当其他参数相对于z作图时,类似的效应应该是可见的。检验这一点,它也被发现的结果是一致的本地模型。

英文摘要:

Recently, it was argued that the log(z)-m_{v} plot of 106,000 AGN galaxies could be interpreted as an evolutionary path followed by local AGN galaxies as they age. It was suggested that these objects are born as quasars with a high intrinsic redshift component that decreases with time. When the intrinsic component is large it causes them to be pushed above the standard candle line for brightest radio galaxies on a log(z)-m_{v} plot. In the jets of radio loud AGN galaxies, Beta_(app) is the apparent transverse velocity of the ejected material relative to the speed of light. In the cosmological redshift (CR) model the Beta_(app) vs z distribution has a peculiar shape, and there have been several attempts to explain it. In agreement with the model proposed to explain the log(z)-m_{v} plot, it is shown here that the peculiar shape of the Beta_(app)-z distribution in the CR model is exactly what is expected if the sources are local but their large intrinsic redshifts are assumed to be cosmological in the calculation of Beta_(app). This result not only supports our previous interpretation of the log(z)-m_{v} plot, it further implies that if a large component of the redshift is intrinsic a similar effect should be visible when other parameters are plotted vs z. Examining this it is also found that the results are consistent with the local model.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑