Results 51 to 60 of about 686,828 (173)
Decelerating relativistic two-component jets [PDF]
Astrophys.J.705:1594-1606,2009, 2009 Transverse stratification is a common intrinsic feature of astrophysical jets. There is growing evidence that jets in radio galaxies consist of a fast low density outflow at the jet axis, surrounded by a slower, denser, extended jet. The inner and outer jet components then have a different origin and launching mechanism, making their effective inertia,
arxiv +1 more source
VARIABILITY IN ACTIVE GALACTIC NUCLEI FROM PROPAGATING TURBULENT RELATIVISTIC JETS [PDF]
, 2016 We use the Athena hydrodynamics code to model propagating two-dimensional relativistic jets as approximations to the growth of radio-loud active galactic nuclei for various input jet velocities and jet-to-ambient matter density ratios. Using results from
M. Pollack, David Pauls, P. Wiita
semanticscholar +1 more source
On the Relationship between BL-Lacertae Objects and FRI Radio Galaxies [PDF]
, 1993 The idea that Fanaroff-Riley Class~I Radio Galaxies contain core jets with Lorentz factors of the order of a few and are the parent population for BL~Lac Objects is examined, with particular reference to the data on two FRI Radio Galaxies, NGC~315 and ...
Georey V. Bicknell +2 more
core +2 more sources
Microscopic Processes in Global Relativistic Jets Containing Helical Magnetic Fields [PDF]
, 2016 In the study of relativistic jets one of the key open questions is their interaction with the environment on the microscopic level. Here, we study the initial evolution of both electron–proton ( e − – p + ) and electron–positron ( e ± ) relativistic jets
K. Nishikawa +13 more
semanticscholar +1 more source
Relativistic Jets from AGN Viewed at Highest Angular Resolution
, 2019 Accreting supermassive black holes in active galactic nuclei (AGN) produce powerful relativistic jets that shine from radio to GeV/TeV γ-rays. Over the past decade, AGN jets have extensively been studied in various energy bands and our knowledge about ...
K. Hada
semanticscholar +1 more source
The power of relativistic jets is larger than the luminosity of their accretion disks [PDF]
Nature, 2014 Theoretical models for the production of relativistic jets from active galactic nuclei predict that jet power arises from the spin and mass of the central supermassive black hole, as well as from the magnetic field near the event horizon.
G. Ghisellini +8 more
semanticscholar +1 more source
Relativistic AGN jets I. The delicate interplay between jet structure, cocoon morphology and jet-head propagation [PDF]
, 2013 Current observations have shown that astrophysical jets reveal strong signs of radial structure. They suggest that the inner region of the jet, the jet spine, consists of a low-density, fast-moving gas, while the outer region of the jet consists of a more dense and slower moving gas, called the jet sheath.
arxiv +1 more source
Relativistic Jets from Collapsars [PDF]
, 1999 We have studied the relativistic beamed outflow proposed to occur in the collapsar model of gamma-ray bursts. A jet forms as a consequence of an assumed energy deposition of $\sim 10^{50}- 10^{51}$ erg/s within a $30^{\circ}$ cone around the rotation ...
A. MacFadyen +8 more
core +3 more sources
Energy Technology, EarlyView.This work reviews various methods to synthesize carbon nanotubes and analyzes the best methods to produce composites for supercapacitors for electric vehicles. Chemical vapor deposition is found to be the best method because the produced CNTs can be used directly without purification unless the catalyst particles need to be removed.
Apri Wiyono +9 more
wiley +1 more source
Statistical multifrequency study of narrow-line Seyfert 1 galaxies [PDF]
, 2014 High-energy {\gamma}-rays, which are produced by powerful relativistic jets, are usually associated with blazars and radio galaxies. In the current active galactic nuclei (AGN) paradigm, such jets are almost exclusively launched from massive elliptical ...
Järvelä, Emilia +2 more
core +1 more source