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Related papers: 3D Structures on Relativistic Jets

200 papers

Experiments and numerical simulations were conducted to investigate the dispersion of turbulent jets issuing from realistic pipe geometries. The effect of jet densities and Reynolds numbers on vertical buoyant jets were investigated, as…

Fluid Dynamics · Physics 2018-11-15 Majid Soleimani Nia , Brian Maxwell , Peter Oshkai , Nedjib Djilali

Parsec-scale VLBA images of BL Lac at 15 GHz show that the jet contains a permanent quasi-stationary emission feature 0.26 mas (0.34 pc projected) from the core, along with numerous moving features. In projection, the tracks of the moving…

High Energy Astrophysical Phenomena · Physics 2014-05-19 M. H. Cohen , D. L. Meier , T. G. Arshakian , D. C. Homan , T. Hovatta , Y. Y. Kovalev , M. L. Lister , A. B. Pushkarev , J. L. Richards , T. Savolainen

This experimental study investigates the effects of viscosity contrast between a saltwater jet and its high-viscosity propylene glycol surroundings. Using density-matched fluids in a gravity-driven flow, Jet Reynolds numbers (Re) from 1600…

Fluid Dynamics · Physics 2024-01-01 Vinod Srinivasan , Xijun Tan , Emmet Whitely , Ian Wright , Akash Dhotre , Jinwei Yang

We have performed magneto-hydrodynamic simulations of relativistic jets from supermassive blackholes over a few tens of kpc for a range of jet parameters. One of the primary aims were to investigate the effect of different MHD instabilities…

High Energy Astrophysical Phenomena · Physics 2020-09-30 Dipanjan Mukherjee , Gianluigi Bodo , Andrea Mignone , Paola Rossi , Bhargav Vaidya

We show that the principal differences in appearance of the main and counter-jets within 30 arcsec of the nucleus of the low-luminosity radio galaxy 3C 31 can result entirely from the effects of relativistic aberration in two symmetrical,…

Astrophysics · Physics 2009-11-07 R. A. Laing , A. H. Bridle

Full jet reconstruction in relativistic heavy ion collisions provides new and unique insights to the physics of parton energy loss. Because of the large underlying event multiplicity in $A+A$ collisions, random and correlated fluctuations…

Nuclear Experiment · Physics 2009-07-22 N. Grau , B. A. Cole , W. G. Holzmann , M. Spousta , P. Steinberg

We perform a linear analysis of the stability of a magnetized relativistic non-rotating cylindrical flow in the aproximation of zero thermal pressure, considering only the m = 1 mode. We find that there are two modes of instability:…

High Energy Astrophysical Phenomena · Physics 2015-06-16 G. Bodo , G. Mamatsashvili , P. Rossi , A. Mignone

A series of simulated maps showing the appearance in total intensity of flows computed using a recently developed relativistic hydrodynamic code (Duncan \& Hughes 1994: ApJ, 436, L119) are presented. The radiation transfer calculations were…

Astrophysics · Physics 2009-10-28 Amy J. Mioduszewski , Philip A. Hughes , G. Comer Duncan

Relativistic outflows represent one of the best-suited tools to probe the physics of AGN. Numerical modelling of internal structure of the relativistic outflows on parsec scales provides important clues about the conditions and dynamics of…

Astrophysics · Physics 2015-06-24 M. Perucho , A. P. Lobanov , J. M. Marti

Relativistic AGN jets exhibit multi-timescale variability and a broadband non-thermal spectrum extending from radio to gamma-rays. These highly magnetized jets are prone to undergo several Magneto-hydrodynamic (MHD) instabilities during…

High Energy Astrophysical Phenomena · Physics 2021-06-30 Sriyasriti Acharya , Nikhil S Borse , Bhargav Vaidya

Context. Relativistic jets from Active Galactic Nuclei are observed to be collimated on the parsec scale. When the pressure between the jet and the ambient medium is mismatched, recollimation shocks and rarefaction shocks are formed.…

High Energy Astrophysical Phenomena · Physics 2025-01-15 Xu-Fan Hu , Yosuke Mizuno , Christian M. Fromm

Relativistic jets naturally occur in astrophysical systems that involve accretion onto compact objects, such as core collapse of massive stars in gamma-ray bursts (GRBs) and accretion onto supermassive black holes in active galactic nuclei…

High Energy Astrophysical Phenomena · Physics 2016-01-27 Omer Bromberg , Alexander Tchekhovskoy

We report on the acceleration properties of 329 features in 95 blazar jets from the MOJAVE VLBA program. Nearly half the features and three-quarters of the jets show significant changes in speed and/or direction. In general, apparent speed…

High Energy Astrophysical Phenomena · Physics 2015-01-14 D. C. Homan , M. L. Lister , Y. Y. Kovalev , A. B. Pushkarev , T. Savolainen , K. I. Kellermann , J. L. Richards , E. Ros

The stability of astrophysical jets in the linear regime is investigated by presenting the methodology to find the growth rates of the various instabilities. We perturb a cylindrical axisymmetric steady jet, linearize the relativistic ideal…

High Energy Astrophysical Phenomena · Physics 2023-08-31 Nektarios Vlahakis

We develop a theory of particle acceleration inside relativistic rotating electron-positron force-free jets with spiral magnetic fields. We considered perturbation of the stationary magnetic field structure and found that acceleration takes…

Astrophysics · Physics 2009-11-07 A. R. Beresnyak , Ya. N. Istomin , V. I. Pariev

We perform fully relativistic hydrodynamic simulations of the deceleration and lateral expansion of a relativistic jet as it expands into an ambient medium. The hydrodynamic calculations use a 2D adaptive mesh refinement (AMR) code, which…

Astrophysics · Physics 2009-11-06 Jonathan Granot , Mark Miller , Tsvi Piran , Wai-Mo Suen , Philip A. Hughes

Two-dimensional (2D) jet tomography is a promising tool to study jet medium modification in high-energy heavy-ion collisions. It combines gradient (transverse) and longitudinal jet tomography for selection of events with localized initial…

High Energy Physics - Phenomenology · Physics 2024-02-02 Yu-Xin Xiao , Yayun He , Long-Gang Pang , Hanzhong Zhang , Xin-Nian Wang

We review the statistical properties of relativistic Doppler boosting relevant for studies of relativistic jets from compact objects based on radio--X-ray(--mass) correlations, such as that found in black-hole X-ray binaries in the low/hard…

Astrophysics · Physics 2009-11-10 S. Heinz , A. Merloni

Fundamental insight into the physics of buoyant gas dispersion from realistic flow geometries is necessary to accurately predict flow structures associated with hydrogen outflow from accidental leaks and the associated flammability…

Fluid Dynamics · Physics 2019-06-27 Majid Soleimani nia , Peter Oshkai , Ned Djilali

Recent radio emission, polarization, and Faraday rotation maps of the radio jet of the galaxy 3C 303 have shown that one knot of this jet has a {\it galactic}-scale electric current of $\sim 3\times 10^{18}$ Amp\`ere flowing along the jet…

High Energy Astrophysical Phenomena · Physics 2012-03-01 R. V. E. Lovelace , S. Dyda , P. P. Kronberg