TANAMI：用南方毫弧秒干涉测量术跟踪活动星系核I。8.4 GHz第一代图像
TANAMI: Tracking Active Galactic Nuclei with Austral Milliarcsecond Interferometry I. First-Epoch 8.4 GHz Images
摘要：
我们介绍了TANAMI计划（跟踪活动星系核与南方毫弧秒干涉），这是自2007年以来，在8.4 GHz和22 GHz，位于-30度赤纬以南的43个河外喷流的初始样本进行监测。该方案的所有方面都进行了讨论。在8.4 GHz的第一个历元的结果，以及由此导出的物理参数。我们目前的第一个时代的图像为43个来源，一些观察到的第一次在毫角秒分辨率。这些图像的参数，以及从它们导出的物理参数也被提出和讨论。这些和随后的图像从TANAMI调查可在http://pulsar.sternwarte.uni-erlangen.de/tanami/我们获得可靠的，高动态范围的南半球活动星系核的图像。样本中的所有类星体和BL Lac天体都具有单边射电形态。镀锌板可以是双面的、单面的或不规则的。LAT在运行的头三个月内检测到了大约28%的TANAMI样本。初步分析表明，当星系被排除在外，LAT检测到的源有较大的开口角比那些没有被LAT检测到。LAT检测和未检测的亮度温度似乎具有相似的分布。TANAMI样本和子样本的红移分布与LAT和EGRET观测到的明亮伽马射线活动星系核相似，但LAT没有探测到红移超过1.8的源。
英文摘要：
We introduce the TANAMI program (Tracking Active Galactic Nuclei with Austral Milliarcsecond Interferometry) which is monitoring an initial sample of 43 extragalactic jets located south of -30 degrees declination at 8.4 GHz and 22 GHz since 2007. All aspects of the program are discussed. First epoch results at 8.4 GHz are presented along with physical parameters derived therefrom. We present first epoch images for 43 sources, some observed for the first time at milliarcsecond resolution. Parameters of these images as well as physical parameters derived from them are also presented and discussed. These and subsequent images from the TANAMI survey are available at http://pulsar.sternwarte.uni-erlangen.de/tanami/ We obtain reliable, high dynamic range images of the southern hemisphere AGN. All the quasars and BL Lac objects in the sample have a single-sided radio morphology. Galaxies are either double-sided, single-sided or irregular. About 28% of the TANAMI sample has been detected by LAT during its first three months of operations. Initial analysis suggests that when galaxies are excluded, sources detected by LAT have larger opening angles than those not detected by LAT. Brightness temperatures of LAT detections and non-detections seem to have similar distributions. The redshift distributions of the TANAMI sample and sub-samples are similar to those seen for the bright gamma-ray AGN seen by LAT and EGRET but none of the sources with a redshift above 1.8 have been detected by LAT.
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。
