Kiloparsec-scale Jets: Physics, Emission Mechanisms, and Challenges
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2019-03-08
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Citation of Original Publication
Eric S. Perlman, et.al, Kiloparsec-scale Jets: Physics, Emission Mechanisms, and Challenges, Astrophysics, Astrophysics of Galaxies, https://arxiv.org/ftp/arxiv/papers/1903/1903.03657.pdf
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This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
Public Domain Mark 1.0
This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
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Abstract
Jets are a ubiquitous part of the accretion process, created in AGN, by a coupling between the
magnetic field near the central black hole and inflowing material. We point out what advances
can be achieved by new technologies, concentrating on kiloparsec scales, beyond the Bondi
radius, where accretion stops. Here, jets profoundly influence their host galaxy and the
surrounding clusters and groups, transporting prodigious amounts of matter and energies to
scales of hundreds of kpc. Basic questions still remain regarding jet physics, which new
instruments can advance greatly. The ngVLA, LOFAR, JWST and LUVOIR, as well as a Chandra
successor, will give higher angular resolution and sensitivity. This will allow us to probe the
emission mechanisms and dynamics of jets, and search for links between these areas, magnetic
fields, particle acceleration and high-energy emission mechanisms. We stress the need for
polarimetry in the X-ray and optical, critical to many of the most important questions in jet
physics. We hope to directly probe resolved, flaring components, which for the first time will
allow us to reveal how jets respond to stimuli and link statics and dynamics.