Results 51 to 60 of about 1,194,769 (355)
Hunting Gamma-Ray-emitting FR0 Radio Galaxies in Wide-field Sky Surveys
The Astrophysical Journal, 2023 The latest entry in the jetted active galactic nuclei (AGN) family is the Fanaroff–Riley type 0 (FR0) radio galaxies. They share several observational characteristics, e.g., nuclear emission and host galaxy morphology, with FR I sources; however, they ...
Meghana Pannikkote +2 more
doaj +1 more source
Relativistic jets in narrow-line Seyfert 1 galaxies. New discoveries and open questions
EPJ Web of Conferences, 2013 Before the launch of the Fermi satellite only two classes of AGNs were known to produce relativistic jets and thus emit up to the γ-ray energy range: blazars and radio galaxies, both hosted in giant elliptical galaxies.
D’Ammando F. +4 more
doaj +1 more source
HORIZON-SCALE LEPTON ACCELERATION IN JETS: EXPLAINING THE COMPACT RADIO EMISSION IN M87 [PDF]
, 2015 It has now become clear that the radio jet in the giant elliptical galaxy M87 must turn on very close to the black hole. This implies the efficient acceleration of leptons within the jet at scales much smaller than feasible by the typical dissipative ...
A. Broderick, A. Tchekhovskoy
semanticscholar +1 more source
INVESTIGATING PARTICLE ACCELERATION IN PROTOSTELLAR JETS: THE TRIPLE RADIO CONTINUUM SOURCE IN SERPENS [PDF]
, 2015 While most protostellar jets present free–free emission at radio wavelengths, synchrotron emission has also been proposed to be present in a handful of these objects.
A. Rodríguez-Kamenetzky +7 more
semanticscholar +1 more source
A Q‐Learning Algorithm to Solve the Two‐Player Zero‐Sum Game Problem for Nonlinear Systems
International Journal of Adaptive Control and Signal Processing, Volume 39, Issue 3, Page 566-581, March 2025.A Q‐learning algorithm to solve the two‐player zero‐sum game problem for nonlinear systems. ABSTRACT This paper deals with the two‐player zero‐sum game problem, which is a bounded L2$$ {L}_2 $$‐gain robust control problem. Finding an analytical solution to the complex Hamilton‐Jacobi‐Issacs (HJI) equation is a challenging task.
Afreen Islam +2 more
wiley +1 more source
Radio Loud AGN Unification: Connecting Jets and Accretion
EPJ Web of Conferences, 2013 While only a fraction of Active Galactic Nuclei are observed to host a powerful relativistic jet, a cohesive picture is emerging that radio-loud AGN may represent an important phase in the evolution of galaxies and the growth of the central super-massive
Meyer Eileen T. +3 more
doaj +1 more source
Interaction of Fanaroff–Riley class II radio jets with a randomly magnetized intracluster medium [PDF]
, 2011 M. Huarte-Espinosa, M. Krause, and P. Alexander, 'Interaction of Fanaroff–Riley class II radio jets with a randomly magnetized intracluster medium', Monthly Notices of the Royal Astronomical Society, Vol. 418, pp.
M. Huarte-Espinosa +2 more
semanticscholar +1 more source
Radio emission from large-scale radio jets
The Astrophysical Journal, 1988 A model for the generation of secondary electrons and positrons within the collimated beam of energetic particles and magnetic fields flowing out of the central engines of extragalactic radio sources is proposed. It is demonstrated that if significant amounts of materials are entrained into this collimated beam as suggested recently by De Young, the ...
M. W. Anyakoha, P. N. Okeke, S. E. Okoye
openaire +1 more source
International Journal of Adaptive Control and Signal Processing, EarlyView.This work introduces an adaptive human pilot model that captures pilot time‐delay effects in adaptive control systems. The model enables the prediction of pilot–controller interactions, facilitating safer integration and improved design of adaptive controllers for piloted applications.
Abdullah Habboush, Yildiray Yildiz
wiley +1 more source
Radio jets from stellar tidal disruptions [PDF]
, 2011 A star that passes too close to a massive black hole will be torn apart by tidal forces. The flare of photons emitted during the accretion of the stellar debris is predicted to be observable, and candidates of such events have been observed at optical to
S. Velzen, E. Koerding, H. Falcke
semanticscholar +1 more source