Results 41 to 50 of about 45,615 (148)

An Unusual Change in the Radio Jets of GRS 1915+105

The Astrophysical Journal
We compare Very Large Array observations of GRS 1915+105 made in 1994 and 2023, with nearly three decades of difference. The source has experienced intriguing major changes.
Luis F. Rodríguez, I. Félix Mirabel
doaj   +1 more source

How do recollimation-induced instabilities shape the propagation of hydrodynamic relativistic jets?

Astronomy & Astrophysics
Context. Recollimation is a phenomenon of particular importance in the dynamical evolution of jets and in the emission of high-energy radiation. Additionally, the full comprehension of this phenomenon provides insights into fundamental properties of jets
Costa A., Bodo G., Tavecchio F., Rossi P., Coppi P., Sciaccaluga A., Boula S.   +6 more
doaj   +1 more source

Some Notes About the Current Researches on the Physics of Relativistic Jets

Frontiers in Astronomy and Space Sciences, 2022
Some highlights of the recent researches in the field of relativistic jets are reviewed and critically analyzed. Given the extent of the available literature, this essay symbolically takes the baton from the outstanding and recent review by Blandford ...
Luigi Foschini
doaj   +1 more source

Signatures of Relativistic Helical Motion in the Rotation Measures of AGN Jets

, 2009
Polarization has proved an invaluable tool for probing magnetic fields in relativistic jets. Maps of the intrinsic polarization vectors have provided the best evidence to date for uniform, toroidally dominated magnetic fields within jets.
Abraham Loeb, Asada, Asada, Avery E. Broderick, Broderick, De Villiers, Doeleman, Hagiwara, Jones, Kharb, Lister, López, McKinney, Taylor, Taylor, Taylor, Vlahakis, Walker, Zavala, Zavala, Zavala, Zavala   +21 more
core   +1 more source

Numerical Simulation of Radiatively Driven Transonic Relativistic Jets

The Astrophysical Journal
We perform the numerical simulations of axisymmetric, relativistic, optically thin jets under the influence of the radiation field of an accretion disk.
Raj Kishor Joshi, Indranil Chattopadhyay, Antonios Tsokaros, Priyesh Kumar Tripathi   +3 more
doaj   +1 more source

Relativistic jet models for two low-luminosity radio galaxies: evidence for backflow?

, 2012
We show that asymmetries in total intensity and linear polarization between the radio jets and counter-jets in two lobed Fanaroff-Riley Class I (FR I) radio galaxies, B2 0206+35 (UGC 1651) and B2 0755+37 (NGC 2484), can be accounted for if these jets are
A. H. Bridle, Aloy, Bondi, Canvin, Canvin, Falco, Fanaroff, Guidetti, Guidetti, Hardcastle, Katz-Stone, Katz-Stone, Laing, Laing, Laing, Laing, Laing, Laing, Laing, McNamara, Miller, Norman, Norman, Parma, Parma, Parma, Perucho, Press, R. A. Laing, Rossi, Saxton, Wardle   +31 more
core   +1 more source

Jump-starting Relativistic Flows and the M87 Jet

The Astrophysical Journal
We point out the dominant importance of plasma injection effects of relativistic winds from pulsars and black holes. We demonstrate that outside the light cylinder, the magnetically dominated outflows sliding along the helical magnetic field move nearly ...
Maxim Lyutikov, Ahmad Ibrahim
doaj   +1 more source

Microscopic Processes in Global Relativistic Jets Containing Helical Magnetic Fields: Dependence on Jet Radius

Galaxies, 2017
In this study, we investigate the interaction of jets with their environment at a microscopic level, which is a key open question in the study of relativistic jets.
Ken-Ichi Nishikawa, Yosuke Mizuno, Jose L. Gómez, Ioana Duţan, Athina Meli, Charley White, Jacek Niemiec, Oleh Kobzar, Martin Pohl, Asaf Pe’er, Jacob Trier Frederiksen, Åke Nordlund, Helene Sol, Philip E. Hardee, Dieter H. Hartmann   +14 more
doaj   +1 more source

Jet stability, dynamics and energy transport

, 2011
Relativistic jets carry energy and particles from compact to very large scales compared with their initial radius. This is possible due to their remarkable collimation despite their intrinsic unstable nature.
Bodo G., Ferrari A., Gopal-Krishna, Hummel C. A., Perucho M., Perucho M.   +5 more
core   +1 more source

Characterization of the Western Pictor A Hotspot in Hard X-Rays with NuSTAR

The Astrophysical Journal
The origin of X-ray emission from the resolved kiloparsec-scale jets and hotspots of many active galactic nuclei remains uncertain, particularly where the X-ray emission is separate from the radio-optical synchrotron component.
Aamil Shaik, Eileen T. Meyer, Karthik Reddy, Sibasish Laha, Markos Georganopoulos   +4 more
doaj   +1 more source