论文标题
在附近Seyfert Galaxy NGC 1068的Kiloparsec-Scale Jet头部的Alma检测parsec-Scale Blobs
ALMA detection of parsec-scale blobs at the head of kiloparsec-scale jet in the nearby Seyfert galaxy NGC 1068
论文作者
论文摘要
我们将Atacama大毫米/亚毫米阵列观测值为$ \ 100 $ GHz，$ 0.05 $ arcsec（3 pc）在附近的Seyfert Galaxy NGC 1068中看到的千乘积喷气式飞机分辨率，我们报告帕尔塞克斯级Blobs在射流头部的存在。检测到的无线电通量（$ \ of of yout0.8 $ mjy），频谱索引（$ \ of0.5 $）和斑点尺寸（$ \ \ \ 10 $ pc）的组合表明，强烈的磁场为$ b \ of 240 \，μ$ g。如此强的磁场很可能意味着通过流宇宙射线通过流磁场扩增。射流的估计宇宙射线功率可能会超过该星系中恒星形成活动设定的极限。该结果表明，即使是适度的射流也可以在通过银河凸起传播的同时增加银河系宇宙射线含量。
We present Atacama Large Millimeter/submillimeter Array observations at $\approx100$ GHz with $0.05$ arcsec (3 pc) resolution of the kiloparsec-scale jet seen in the nearby Seyfert galaxy NGC 1068, and we report the presence of parsec-scale blobs at the head of the jet. The combination of the detected radio flux ($\approx0.8$ mJy), spectral index ($\approx0.5$), and the blob size ($\approx10$ pc) suggests a strong magnetic field of $B\approx240\,μ$G. Such a strong magnetic field most likely implies magnetic field amplification by streaming cosmic rays. The estimated cosmic-ray power by the jet may exceed the limit set by the star formation activity in this galaxy. This result suggests that even modest-power jets can increase the galactic cosmic-ray content while propagating through the galactic bulge.
