论文标题
两个耀斑带有一次冲击：3C 454.3的有趣情况
Two Flares with One Shock: the Interesting Case of 3C 454.3
论文作者
论文摘要
类星体3C 454.3是一款以其在电磁频谱中看到的快速和剧烈爆发而闻名的大黄色。使用伽马射线，X射线，多波段光学和非常长的基线干涉数据，我们研究了2013年和2014年发生的两个此类事件的性质，伴随着光学极化的强烈变化，包括230度电动矢量位置角（EVPA）旋转。我们的结果表明，这两个爆炸事件都是造成两个扰动的原因。我们将骚扰解释为震惊，使喷气式飞机传播。在这种解释下，2013-FLARE最有可能是由于视角的变化可能是由于无线电芯上游冲击的弯曲或螺旋轨迹引起的。 2014-FLARE和光学极化行为是引起43 GHz无线电芯的冲击的结果，这表明冲击横梁是EVPA旋转的可能机制之一。
The quasar 3C 454.3 is a blazar known for its rapid and violent outbursts seen across the electromagnetic spectrum. Using gamma-ray, X-ray, multi-band optical, and very long baseline interferometric data we investigate the nature of two such events that occurred in 2013 and 2014 accompanied by strong variations in optical polarization, including a 230 degree electric vector position angle (EVPA) rotation. Our results suggest that a single disturbance was responsible for both flaring events. We interpret the disturbance as a shock propagating down the jet. Under this interpretation the 2013-flare originated most likely due to changes in the viewing angle caused by perhaps a bent or helical trajectory of the shock upstream of the radio core. The 2014-flare and optical polarization behavior are the result of the shock exiting the 43 GHz radio core, suggesting that shock crossings are one of the possible mechanisms for EVPA rotations.
