论文标题
在最遥远的大黄蜂中不断发展的parsec尺度的无线电结构
Evolving parsec-scale radio structure in the most distant blazar known
论文作者
论文摘要
Blazars是一流的类星体，具有多普勒的增强喷气机的靠近视线，因此有效地探究了超大质量黑洞的生长及其环境，尤其是在高红移。在这里，我们报告了在z = 5.47时大量j0906+6930的基线干涉测量学观测值，这使得能够检测到极化的发射和parsec尺度上的射流适当运动的测量。该观察结果表明，与普通的Blazar人群相比，强大的喷射量较小，包括较低的适当运动和散装洛伦兹因子。这与先前推断的高吸积率相结合，表明从吸积辐射功率到基于机械的机械功率转移到基于机械的能量和动量向周围气体的转移。虽然不能完全排除替代方案，但我们的结果表明，可能是嵌入在爆炸中的密集培养基中的潜在固定的射流。
Blazars are a sub-class of quasars with Doppler boosted jets oriented close to the line of sight, and thus efficient probes of supermassive black hole growth and their environment, especially at high redshifts. Here we report on Very Long Baseline Interferometry observations of a blazar J0906+6930 at z = 5.47, which enabled the detection of polarised emission and measurement of jet proper motion at parsec scales. The observations suggest a less powerful jet compared with the general blazar population, including lower proper motion and bulk Lorentz factor. This coupled with a previously inferred high accretion rate indicate a transition from an accretion radiative power to a jet mechanical power based transfer of energy and momentum to the surrounding gas.While alternative scenarios could not be fully ruled out, our results indicate a possibly nascent jet embedded in and interacting with a dense medium resulting in a jet bending.
