Results 91 to 100 of about 629,027 (290)

A Multidimensional Relativistic Hydrodynamics Code with a General Equation of State

open access: yes, 2010
The ideal gas equation of state with a constant adiabatic index, although commonly used in relativistic hydrodynamics, is a poor approximation for most relativistic astrophysical flows.
Aloy   +14 more
core   +1 more source

Discovery of synchrotron emission from a YSO jet

open access: yesEPJ Web of Conferences, 2013
Synchrotron emission at radio wavelengths is commonly found in relativistic jets from active galactic nuclei (AGNs) and microquasars and allows the study of the magnetic field in these kind of jets.
Carrasco-González Carlos   +5 more
doaj   +1 more source

Quantum GraviElectro Dynamics

open access: yesAnnalen der Physik, Volume 538, Issue 1, January 2026.
The BRST invariant Lagrangian of the gravitationally interacting U(1)$U(1)$ gauge theory, namely the Quantum GraviElectro Dynamics (QGED). The Yan–Mills theory with the Hilbert–Einstein gravitational Lagrangian, namely the Yang–Mills–Utiyama (YMU) theory, is defined and quantised using the standard procedure. The theory is perturbatively renormalisable,
Yoshimasa Kurihara
wiley   +1 more source

CHANDRA Observations of X-ray Jet Structure on kpc to Mpc Scales

open access: yes, 2003
With its exquisite spatial resolution of better than 0.5 arcsecond, the Chandra observatory is uniquely capable of resolving and studying the spatial structure of extragalactic X-ray jets on scales of a few to a few hundred kilo-parsec.
B.P. Miller   +18 more
core   +2 more sources

Revival of Layered Ferroelectrics in Thin Films

open access: yesSmall Science, Volume 6, Issue 1, January 2026.
This review presents recent advances in layered perovskite‐based ferroelectric thin films, showing how progress in deposition and characterization now enables atomic‐precision synthesis across the Aurivillius, Carpy–Galy, Ruddlesden–Popper, and Dion–Jacobson families.
Elzbieta Gradauskaite
wiley   +1 more source

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

open access: yes, 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   +21 more
core   +1 more source

The Relativistic Outflow Driven by the Large-scale Magnetic Field from an Accretion Disk

open access: yesThe Astrophysical Journal
Outflows/jets are ubiquitous in a wide range of astrophysical objects, yet the mechanisms responsible for their generation remain elusive. One hypothesis is that they are magnetically driven.
Wei Xie, Wei-Hua Lei
doaj   +1 more source

Steady relativistic fluid jets [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 1987
A numerical simulation is presented of a relativistic jet. Owing to the similar mathematical form of the equations of steady relativistic gas dynamics and steady non-relativistic gas dynamics, the numerical method used to make this calculation can be used to model either type of jet flow.
openaire   +2 more sources

DECELERATING RELATIVISTIC TWO-COMPONENT JETS [PDF]

open access: yesThe Astrophysical Journal, 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,
Meliani, Z., Keppens, R.
openaire   +4 more sources

Outer Radiation Belt Dynamics During the October 2012 Storm Revisited: Rapid Inward Radial Transport From a Dynamic Outer Boundary

open access: yesJournal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.
Abstract Earth's outer radiation belt electron flux is highly variable and can be enhanced by over an order of magnitude over timescales less than one day, as observed during the October 2012 storm. Previous studies of this storm (e.g., Reeves et al., 2013, https://doi.org/10.1126/science.1237743) have invoked local acceleration to explain this ...
L. G. Ozeke   +4 more
wiley   +1 more source

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