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High energy emission from blazars is thought to arise in a relativistic jet launched by a supermassive black hole. The emission site must be far from the hole and the jet relativistic, in order to avoid absorption of the photons. In extreme…

High Energy Astrophysical Phenomena · Physics 2015-05-20 John G. Kirk , Iwona Mochol

The radiative cooling of electrons responsible for the nonthermal synchrotron emission of large scale jets of radiogalaxies and quasars requires quasi continuous (in time and space) production of relativistic electrons throughout the jets…

Astrophysics · Physics 2014-10-13 A. Neronov , D. Semikoz , F. Aharonian , O. Kalashev

Determining accurate orbits of binary stars with powerful winds is challenging. The dense outflows increase the effective photospheric radius, precluding direct observation of the Keplerian motion; instead the observables are broad lines…

Solar and Stellar Astrophysics · Physics 2020-03-18 David Grant , Katherine Blundell , James Matthews

This article reports on a growing body of observational evidence that many powerful lobe dominated (FR II) radio sources likely have jets with high efficiency. This study extends the maximum efficiency line (jet power $\approx$ 25 times the…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 Brian Punsly

Accumulating observational evidence for a number of radio galaxies suggests an association between their jets and regions of active star formation. The standard picture is that shocks generated by the jet propagate through an inhomogeneous…

Astrophysics · Physics 2009-11-10 P. Chris Fragile , Stephen D. Murray , Peter Anninos , Wil van Breugel

We discuss a theoretical scheme that accounts for bulk matter, jets, and the interaction between the two. The aim is a complete description of particle production at all transverse momentum ($p_{t}$) scales. In this picture, the hard…

Nuclear Theory · Physics 2013-05-30 K. Werner , Iu. Karpenko , M. Bleicher , T. Pierog , S. Porteboeuf-Houssais

Integrated data and energy transfer (IDET) has been of fundamental importance for providing both wireless data transfer (WDT) and wireless energy transfer (WET) services towards low-power devices. Fluid antenna (FA) is capable of exploiting…

Information Theory · Computer Science 2024-03-15 Long Zhang , Halvin Yang , Yizhe Zhao , Jie Hu

Compact, steady jets are observed in the near infrared and radio bands in the hard state of Galactic black hole transients as their luminosity decreases and the source moves towards a quiescent state. Recent radio observations indicate that…

High Energy Astrophysical Phenomena · Physics 2015-06-17 Emrah Kalemci , Tolga Dincer , John A. Tomsick , Michelle M. Buxton , Charles D. Bailyn , Yoon Y. Chun

We investigate the ability of jets in active galactic nuclei (AGNs) to break out of the ambient gas with sufficiently large advance velocities. Using observationally estimated jet power, we analyze 28 bright elliptical galaxies in nearby…

High Energy Astrophysical Phenomena · Physics 2016-04-20 Yutaka Fujita , Nozomu Kawakatu , Isaac Shlosman

We present the results of multi wavelength, co-spatial and near co-temporal observations of jets above a sunspot light bridge. The data were obtained with the Solar Optical Telescope (SOT) on board Hinode, the Interface Region Spectrograph…

Solar and Stellar Astrophysics · Physics 2015-05-12 Lokesh Bharti

High velocity jets are among the most prominent features of a wide class of planetary nebulae, but their origins are not understood. Several different types of physical model have been suggested to power the jets, but there is no consensus…

Solar and Stellar Astrophysics · Physics 2015-05-30 P. J. Huggins

A load-tolerant External Conjugate-T (ECT) impedance matching system for two A2 Ion Cyclotron Resonance Heating (ICRH) antennas has been successfully put into operation at JET. The system allows continuous injection of the RF power into…

Trapped ions driven by electromagnetic radiation constitute one of the most developed quantum technologies to date. The scenarios range from proof-of-principle experiments to on-chip integration for quantum information units. In most cases,…

Quantum Physics · Physics 2023-09-26 T. Tassis , F. L. Semião

The effect of medium-induced parton energy loss on jet fragmentation is studied in high-energy heavy-ion collisions. It is shown that an effective jet fragmentation function can be extracted from the inclusive $p_T$ spectrum of charged…

High Energy Physics - Phenomenology · Physics 2008-11-26 Xin-Nian Wang , Zheng Huang

By considering a small sample of core-dominated radio-loud quasars with X-ray jets, I show, as has been argued previously by others, that the observations require bulk jet deceleration if all of the X-ray emission is to be explained using…

Astrophysics · Physics 2009-11-13 M. J. Hardcastle

Massive gas outflows are considered a key component in the process of galaxy formation and evolution. Because of this, they are the topic of many studies aimed at learning more about their occurrence, location and physical conditions as…

Astrophysics of Galaxies · Physics 2015-06-23 Raffaella Morganti

We present scaling relations between jet power and radio power measured using the Giant Metrewave Radio Telescope (GMRT), Chandra and XMM-Newton, for a sample of 9 galaxy groups combined with the Birzan et al. sample of clusters. Cavity…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 Ewan O'Sullivan , Simona Giacintucci , Laurence P. David , Myriam Gitti , Jan M. Vrtilek , Somak Raychaudhury , Trevor J. Ponman

We review recent theoretical developments in the study of the structure of jets that are produced in ultra relativistic heavy ion collisions. The core of the review focusses on the dynamics of the parton cascade that is induced by the…

High Energy Physics - Phenomenology · Physics 2015-12-09 Jean-Paul Blaizot , Yacine Mehtar-Tani

The amount of air entrained by vertical water jets impacting a large pool is revisited. To test available phenomenological models, new data on the jet deformation at impact and on the entrained air flow rate were collected both on a…

Fluid Dynamics · Physics 2024-11-11 Ivan Redor , Gregory Guyot , Martin Obligado , Jean-Philippe Matas , Alain Cartellier

Motivated by the large number of jets detected by the Chandra X-ray Observatory, and by the inverse Compton X-ray emission model (IC/CMB) for relativistic jets, we revisit two basic questions: ``If the medium that carries the jet's energy…

Astrophysics · Physics 2007-05-23 D. E. Harris , H. Krawczynski