Results 101 to 110 of about 624,739 (259)

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

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

Radiatively driven relativistic jets with variable adiabatic index equation of state [PDF]

, 2015
We investigate a relativistic fluid jet driven by radiation from a shocked accretion disc around a non-rotating black hole approximated by Paczy\'nski-Wiita potential.
M. Vyas, Rajiv Kumar, S. Mandal, I. Chattopadhyay   +3 more
semanticscholar   +1 more source

Solving the Mystery of the Electron Radiation Belt at Uranus: Leveraging Knowledge of Earth's Radiation Belts in a Re‐Examination of Voyager 2 Observations

Geophysical Research Letters, Volume 52, Issue 22, 28 November 2025.
Abstract Voyager 2 provided the only direct measurement of the radiation environment at Uranus and established the well‐accepted characterization of a system with a weaker ion radiation belt and surprisingly intense electron radiation belt. Recent re‐analysis of the flyby, however, suggests that these observations were not taken during normal solar ...
R. C. Allen, S. K. Vines, G. C. Ho
wiley   +1 more source

Energetic Ion Losses Observed During Juno's Close Encounter With Europa

Geophysical Research Letters, Volume 52, Issue 21, 16 November 2025.
Abstract We present energetic ion observations made by Juno during its close Europa flyby on 29 September 2022. These data show significant reductions in the ion intensities occurring in the moon's geometric wake region. The most significant losses occur for locally mirroring ions with gyrophases on the anti‐Jovian facing side of the wake.
G. Clark, B. H. Mauk, C. Paranicas, H. T. Smith, J. R. Szalay, P. Kollmann, F. Allegrini, R. W. Ebert, N. Krupp, L. H. Regoli, T. A. Nordheim, H. L. F. Huybrighs, S. Bolton   +12 more
wiley   +1 more source

Jets with a Twist: The Emergence of FR0 Jets in a 3D GRMHD Simulation of Zero-angular-momentum Black Hole Accretion

The Astrophysical Journal
Spinning supermassive black holes (BHs) in active galactic nuclei magnetically launch relativistic collimated outflows, or jets. Without angular momentum supply, such jets are thought to perish within 3 orders of magnitude in distance from the BH, well ...
Aretaios Lalakos, Alexander Tchekhovskoy, Omer Bromberg, Ore Gottlieb, Jonatan Jacquemin-Ide, Matthew Liska, Haocheng Zhang   +6 more
doaj   +1 more source

On the extragalactic jet asymmetry and composition, and the production of high energy cosmic rays

, 2012
We probe the role of the directional asymmetry between relativistic outflows to kilo-parsec scale jets in the propagation and acceleration of cosmic rays. Our sample contains powerful AGN hosting dense cluster environments.
Benford, Boettcher, Dermer, Enßlin, Enßlin, Fejes, Giovannini, Gizani, Gizani, Gizani, Gopal-Krishna, Greisen, Hardcastle, Hardcastle, Hardcastle, Hillas, Honda, Krichbaum, Leahy, Mathews, Nectaria A.B. Gizani, Niemec, Nulsen, Olinto, Ostrowski, Reynoso, Saripalli, Zatsepin   +27 more
core   +1 more source

SPATIAL GROWTH OF CURRENT-DRIVEN INSTABILITY IN RELATIVISTIC ROTATING JETS AND THE SEARCH FOR MAGNETIC RECONNECTION [PDF]

, 2016
Using the three-dimensional relativistic magnetohydrodynamic code RAISHIN, we investigated the influence of the radial density profile on the spatial development of the current-driven kink instability along magnetized rotating, relativistic jets. For the
C. Singh, Y. Mizuno, E. Pino
semanticscholar   +1 more source

A Comprehensive Review of Additive Manufacturing for Space Applications: Materials, Advances, Challenges, and Future Directions

Advanced Engineering Materials, Volume 27, Issue 22, November 2025.
Additive manufacturing (AM) transforms space hardware by enabling lightweight, high‐performance, and on‐demand production. This review outlines AM processes—powder bed fusion (PBF), directed energy deposition (DED), binder jetting (BJ), sheet lamination (SL), and material extrusion (ME)—applied to propulsion, satellite structures, and thermal devices ...
Stelios K. Georgantzinos, Eleni Papadopoulou, Grigorios Kostopoulos, Stefanos Voulgaris, Alexandra Tseni, Panteleimon Bakalis, Maria Gkara, Chara C. Mitropoulou, Nikos D. Lagaros   +8 more
wiley   +1 more source

Parsec-scale Properties of Brightest Cluster Galaxies

, 2010
We present new VLBI observations at 5 GHz of a complete sample of Brightest Cluster Galaxies (BCGs) in nearby Abell Clusters (distance class
Augusto, Baum, Becker, Bernardi, Best, Best, Bird, Blanton, Blanton, Bliton, Bonamente, Bondi, Braine, Brüggen, Burns, Burns, Burns, Bîrzan, Böhringer, Celotti, Chen, Clarke, Condon, Conselice, Cowie, Crawford, David, Dhawan, Di Matteo, Dickey, Donnelly, Dunn, E. Liuzzo, Ebneter, Edge, Eilek, Ensslin, Fabian, Fabian, Fabian, Fabian, Fabian, Fanaroff, Fanti, Feretti, Feretti, Feretti, Feretti, Feretti, Fisher, Flin, Flin, G. B. Taylor, G. Giovannini, Gavazzi, Ge, Gentile, Giovannini, Giovannini, Giovannini, Giovannini, Girardi, Gitti, Govoni, Gregory, Grillmair, Hoessel, Hudson, Johnstone, Jones, Katayama, Kellerman, Krichbaum, Lara, Lara, Lauer, Ledlow, Lee, Lester, Lin, Lister, Lister, Liuzzo, Liuzzo, M. Giroletti, Malumuth, McNamara, McNamara, McNamara, McNamara, Meier, Mohr, Morganti, Morris, Nagai, Nesterov, O'Donoghue, Owen, Owen, Parma, Parma, Pedlar, Rossi, Ruszkowski, Sakelliou, Salomé, Salomé, Schombert, Scodeggio, Silver, Taylor, Taylor, Taylor, Taylor, Taylor, Taylor, Taylor, Trussoni, Vallee, Venturi, Venturi, Venturi, Verdoes Kleijn, Vermeulen, Walker, Walker, White, Wise, Xu   +128 more
core   +1 more source