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We review recent progress in the theory of jet production, with particular emphasis on the possibility of 1) powerful jets being produced in the first few seconds after collapse of a supernova core and 2) those jets being responsible for…

Astrophysics · Physics 2007-05-23 David L. Meier , Masanori Nakamura

The origin of jets in young stellar objects (YSOs) remains a subject of active investigation. We present a 3D magnetohydrodynamic simulation of jet launching in YSOs, focusing on the interaction between the stellar magnetosphere and the…

Solar and Stellar Astrophysics · Physics 2026-02-17 Yisheng Tu , Zhi-Yun Li , Zhaohuan Zhu , Xiao Hu , Chun-Yen Hsu

A simple look at the steady high-energy Universe reveals a clear correlation with outflows generated around compact objects (winds and jets). In the case of relativistic jets, they are thought to be produced as a consequence of the…

High Energy Astrophysical Phenomena · Physics 2019-12-03 Manel Perucho

Axisymmetric magnetohydrodynamic (MHD) simulations have been applied to investigate the interrelation of a central stellar magnetosphere and stellar wind with a surrounding magnetized disk outflow and how the overall formation of a large…

Astrophysics · Physics 2011-02-11 Christian Fendt

Jets are ubiquitous in astronomy. It has been conjectured that the existence of jets is intimately connected with the spin of the central object and the viscous angular momentum transport of the inner disk. Bipolar jet-like structures…

Astrophysics · Physics 2007-05-23 Peter Todd Williams

We revisit the suggestion that dual jets can be produced during the inspiral and merger of supermassive black holes when these are immersed in a force-free plasma threaded by a uniform magnetic field. By performing independent calculations…

General Relativity and Quantum Cosmology · Physics 2015-05-30 Philipp Moesta , Daniela Alic , Luciano Rezzolla , Olindo Zanotti , Carlos Palenzuela

I argue that the Doppler shift asymmetries observed in some young stellar object (YSO) result from the interaction of the jets with the circumstellar gas, rather than from jets' rotation. The jets do rotate, but at a velocity much below…

Solar and Stellar Astrophysics · Physics 2015-05-14 Noam Soker

Jets can facilitate the mass accretion onto the protostars in star formation. They are believed to be launched from accretion disks around the protostars by magneto-centrifugal force, as supported by the detections of rotation and magnetic…

Astrophysics of Galaxies · Physics 2022-03-30 Chin-Fei Lee , Zhi-Yun Li , Hsien Shang , Naomi Hirano

Jets are endemic to both Galactic solar mass and extragalactic supermassive black holes. A recent 86 GHz image of M\,87 shows a jet emerging from the accretion ring around a black hole, providing the first direct observational constraint on…

High Energy Astrophysical Phenomena · Physics 2024-04-22 Brian Punsly

Using particle-in-cell simulations that label ions and electrons according to their initial inflow region, we find that during 2D collisionless magnetic reconnection, the bulk flow of the plasma from each inflow side crosses paths with…

We present new data from High Energy Density (HED) laboratory experiments designed to explore the interaction of a heavy hypersonic radiative jet with a cross wind. The jets are generated with the MAGPIE pulsed power machine where…

Solar jets are ubiquitous transient collimated mass outflows in the solar atmosphere over a wide range of sizes from small scale nanojets to a few solar radii, embedded in the solar chromosphere to solar corona. Jets are frequently…

Solar and Stellar Astrophysics · Physics 2022-06-07 Reetika Joshi

Large-amplitude oscillations (LAOs) are often detected in filaments. Using multiwavelength observations, their origin can be traced back to the interaction with eruptions and jets. We present two different case studies as observational…

Solar and Stellar Astrophysics · Physics 2023-03-29 Reetika Joshi , Manuel Luna , Brigitte Schmieder , Fernando Moreno-Insertis , Ramesh Chandra

Fast microjets can emerge out of liquid pools from the rebounding of drop-impact craters, or when a bubble bursts at it surface. The fastest jets are the narrowest and are a source of aerosols both from the ocean and a glass of champagne,…

Fluid Dynamics · Physics 2023-03-22 Yuan Si Tian , Zi Qiang Yang , Sigurður T. Thoroddsen

This study experimentally examines the impact of spacing between two pulsed jets and their strengths on the fluid dynamics within an elastic hemispherical cavity. Such interactions between multiple pulsed jets are observed in various…

Fluid Dynamics · Physics 2026-05-22 L. S. Merlo , L. Kadem , W. Saleh , H. D. Ng , G. Di Labbio

A popular model for jet collimation is associated with the presence of a large-scale and predominantly toroidal magnetic field originating from the central engine (a star, a black hole, or an accretion disk). Besides the problem of how such…

Astrophysics · Physics 2009-11-07 Li-Xin Li

We investigate the formation of an ideal magnetized jet that originates from a disk acting as a boundary by conducting axisymmetric MHD simulations. Our simulations demonstrate that the magnetized jet is consistently launched and reaches a…

High Energy Astrophysical Phenomena · Physics 2024-03-06 Somayeh Sheikhnezami , Mostafa Sepahvand

A study of differential cross sections for the production of four jets in multi-Regge kinematics is presented, the main focus lying on azimuthal angle dependences. The theoretical setup consists in the jet production from a single BFKL…

High Energy Physics - Phenomenology · Physics 2016-10-07 Francesco Caporale , Francesco Giovanni Celiberto , Grigorios Chachamis , Agustín Sabio Vera

The origin of the large-scale poloidal magnetic field required to power relativistic jets in collapsars remains uncertain. While such a field may be inherited during PNS collapse, the efficiency of this process is unclear, motivating an in…

High Energy Astrophysical Phenomena · Physics 2026-05-14 Ho-Sang Chan , Ore Gottlieb , Jonatan Jacquemin-Ide , Matteo Cantiello , Mathieu Renzo

We aim at investigating the formation of jet-like features in the lower solar atmosphere, e.g. chromosphere and transition region, as a result of magnetic reconnection. Magnetic reconnection as occurring at chromospheric and transition…

Solar and Stellar Astrophysics · Physics 2015-05-30 J. Y. Ding , M. S. Madjarska , J. G. Doyle , Q. M. Lu , K. Vanninathan , Z. Huang