Relativistic Jets in the Accretion & Collimation Zone: New Challenges Enabled by New Instruments

Relativistic Jets in the Accretion & Collimation Zone: New Challenges Enabled by New Instruments
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吸积中的相对论性喷流

DOI：
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
A. Zdziarski
A. Zdziarski
中科院分区：
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文献类型：
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作者：
E. Perlman;M. Birkinshaw;M. Kadler;S. Komissarov;M. Lister;D. Meier;E. Meyer;M. Nakamura;K. Nyland;C. Odea;D. Worrall;A. Zdziarski

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喷流是吸积过程中无处不在的一部分，在从活动星系 (AGN) 到 X 射线双星甚至新形成的恒星等各种物体中都可以看到喷流。通过磁场和流入物质之间的耦合，活动星系核喷流被其宿主星系的超大质量黑洞加速。它们是许多令人兴奋的现象的根源，可以深刻地影响更大的星系和周围的星团。 本白皮书指出了新技术可以在该领域取得哪些进展，重点关注射流加速到相对论速度并准直的区域。 ngVLA 和新的太空 VLBI 任务将在无线电中提供更高的角分辨率、灵敏度和保真度，穿透该区域寻找更多物体，并使我们能够解决有关喷射加速和准直的物理问题。其他波段的干涉测量将使我们能够直接探测耀斑成分。我们还强调偏振测量的必要性，这对于揭示磁场的作用和配置至关重要。
Jets are a ubiquitous part of the accretion process, seen in a wide variety of objects ranging from active galaxies (AGN) to X-ray binary stars and even newly formed stars. AGN jets are accelerated by the supermassive black hole of their host galaxy by a coupling between the magnetic field and inflowing material. They are the source for many exciting phenomena and can profoundly influence the larger galaxy and surrounding cluster. This White Paper points out what advances can be achieved in the field by new technologies, concentrating on the zone where jets are accelerated to relativistic speeds and collimated. The ngVLA and new space VLBI missions will give higher angular resolution, sensitivity and fidelity in the radio, penetrating this zone for additional objects and allowing us to resolve fundamental questions over the physics of jet acceleration and collimation. Interferometry in other bands would allow us to probe directly flaring components. We also emphasize the need for polarimetry, which is essential to revealing the role and configuration of magnetic fields.