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We investigate potential models that could explain why multiple proto-stellar systems predominantly show single jets. During their formation, stars most frequently produce energetic outflows and jets. However, binary jets have only been…

Astrophysics · Physics 2010-11-26 G. C. Murphy , T. Lery , S. O'Sullivan , D. Spicer , F. Bacciotti , A. Rosen

Aims: Jets are excellent signposts for very young embedded protostars, so we want to identify jet-driving protostars as a tracer of the currently forming generation of stars in the Carina Nebula, which is one of the most massive galactic…

Collimated supersonic flows in laboratory experiments behave in a similar manner to astrophysical jets provided that radiation, viscosity, and thermal conductivity are unimportant in the laboratory jets, and that the experimental and…

Astrophysics of Galaxies · Physics 2014-11-20 P. Hartigan , J. M. Foster , B. H. Wilde , R. F. Coker , P. A. Rosen , J. F. Hansen , B. E. Blue , R. J. R. Williams , R. Carver , A. Frank

A set of 3D MHD simulations of magnetized jets has been performed. The jets contain an equipartition primarily poloidal magnetic field and the effect of jet density on jet dynamics and structure is evaluated. The jet is precessed at the…

Astrophysics · Physics 2009-10-30 P. E. Hardee , D. A. Clarke , A. Rosen

Collimated outflows (jets) are ubiquitous in the universe appearing around sources as diverse as protostars and extragalactic supermassive blackholes. Jets are thought to be magnetically collimated, and launched from a magnetized accretion…

Relativistic jets are ubiquitous in astrophysical systems that contain compact objects. They transport large amounts of energy to large distances from the source, and their interaction with the ambient medium has a crucial effect on the…

High Energy Astrophysical Phenomena · Physics 2015-05-28 Omer Bromberg , Ehud Nakar , Tsvi Piran , Re'em Sari

We investigate the dynamics and morphology of jets propagating into the interstellar medium using 2D relativistic hydrodynamic simulations. The calculations are performed assuming axisymmetric geometry and trace a long propagation of jets.…

Astrophysics · Physics 2009-11-10 Akira Mizuta , Shoichi Yamada , Hideaki Takabe

Feedback from black hole-powered jets has been invoked in many cosmological simulations to regulate star formation and quench galaxies. Despite this, observational evidence of how jets might be able to affect their hosts remains scarce,…

Knotty structures of Herbig-Haro jets are common phenomena, and knowing the origin of these structures is essential for understanding the processes of jet formation. Basically, there are two theoretical approaches: different types of…

Solar and Stellar Astrophysics · Physics 2015-06-04 T. A. Movsessian , T. Yu. Magakian , A. V. Moiseev

We performed MHD simulations of very light bipolar jets with density contrasts down to 10^-4 in axisymmetry, which were injected into a medium of constant density and evolved up to 200 kpc (200 r_j) full length. These jets show weak and…

Astrophysics · Physics 2007-10-24 V. Gaibler , M. Camenzind , M. Krause

We present hydrodynamic simulations of molecular outflows driven by jets with a long period of precession, motivated by observations of arc-like features and S-symmetry in outflows associated with young stars. We simulate images of not only…

Astrophysics · Physics 2009-11-10 Michael D. Smith , Alex Rosen

The formation mechanism of the jet-aligned CO clouds found by NANTEN CO observations is studied by magnetohydrodynamical (MHD) simulations taking into account the cooling of the interstellar medium. Motivated by the association of the CO…

High Energy Astrophysical Phenomena · Physics 2015-06-22 Y. Asahina , T. Ogawa , T. Kawashima , N. Furukawa , R. Enokiya , H. Yamamoto , Y. Fukui , R. Matsumoto

In the solar atmosphere, jets are prevalent and they are significant for the mass and energy transport. Here we conduct numerical simulations to investigate the mass and energy contributions of the recently observed high-speed jets to the…

Solar and Stellar Astrophysics · Physics 2016-08-24 Liping Yang , Jiansen He , Hardi Peter , Chuanyi Tu , Lei Zhang , Eckart Marsch , Linghua Wang , Xueshang Feng

Supersonic plasma outflows driven by multi-beam, high-energy lasers, such as Omega and NIF, have been and will be used as platforms for a variety of laboratory astrophysics experiments. Here we propose a new way of launching high density…

High Energy Astrophysical Phenomena · Physics 2013-04-16 Wen Fu , Edison P. Liang , Milad Fatenejad , Donald Q. Lamb , Michael Grosskopf , Hye-Sook Park , Bruce Remington , Anatoly Spitkovsky

Jets are generated in hard interactions in high-energy nuclear collisions. Jets propagate through the quark-gluon plasma (QGP) as the jet shower evolves; their interaction with the QGP, known as jet quenching, generates observable phenomena…

Nuclear Experiment · Physics 2022-11-23 Raymond Ehlers

Protostellar jets are known to emit in a wide range of bands, from radio to IR to optical bands, and to date also about ten X-ray emitting jets have been detected, with a rate of discovery of about one per year. We aim at investigating the…

Solar and Stellar Astrophysics · Physics 2015-05-18 R. Bonito , S. Orlando , M. Miceli , J. Eislöffel , G. Peres , F. Favata

Many jets exhibit twisted helical structures. Where superluminal motions are detected, jet orientation and pattern/flow speed are considerably constrained. In this case modeling efforts can place strong limits on conditions in the jet and…

Astrophysics · Physics 2009-11-10 P. E. Hardee

HH 211 is a highly collimated jet with a chain of well-defined knots, powered by a nearby young Class 0 protostar. We have used 4 epochs (2004, 2008, 2010, and 2013) of Submillimeter Array (SMA) archive data to study the properties of the…

Solar and Stellar Astrophysics · Physics 2016-01-13 Kai-Syun Jhan , Chin-Fei Lee

Gamma-ray burst light curves are characterized by marked variability, each showing unique properties. The origin of such variability, at least for a fraction of long GRBs, may be the result of an unsteady central engine. It is thus…

High Energy Astrophysical Phenomena · Physics 2016-08-17 Diego Lopez-Camara , Davide Lazzati , Brian J. Morsony

We present high spatial resolution optical integral field spectroscopy of a collimated Herbig-Haro jet viewed nearly edge-on. Maps of the line emission, velocity centroid, and velocity dispersion were generated for the H$\alpha$ and [S II]…

Astrophysics · Physics 2008-11-26 Tracy L. Beck , A. Riera , A. C. Raga , Bo Reipurth