Nature of Astrophysical Jets Unraveled*

The theoretical finding [1] of robust plasma structures propagating away from circumbinary disks had led to propose [2] that significant astrophysical the jets result from of the emission of these structures. Propagating plasma double-helices emerged from the non-linear interactions [2] of modes generated in the “Swept (Torus) Regions” carved in the circumbinary disk by a pair of (stellar) Black Holes. Successively, the case of a massive black hole paired with a much lighter “sheperd” black hole has been considered. The emitted structures have been associated with the fluctuations from the “Swept Torus” region carved by the “sheperd”. In fact, an analysis of the observed M87 Jet structure [3], that followed the early findings concluded that this was of a double-helix kind. More recent studies of other jets have identified helical [4,5] or different plasmas structures [6].

1. B. Coppi, Invited Papers for the XVI Marcel Grossmann Conference on Relativistic Astrophysics (Session I), July 2021, and for the Asia Pacific Physical Societies Conference on Plasma Physics, (SA-II8), October 2021.

2. B. Coppi, Fundamental Pl. Phys., 100007 (2023).

3. A. Pasetto et al., Ap J. Letters, 923:L5 (2021).

4. G-Y. Zhao, et al.,  Ap J., 932, 732 (2022).

5. I. Issoun, et al.,  Ap J., 934, 145 (2022).

6. A. Fuentes, et al., Nature Astronomy, 7, 1359 (2023).