Results 41 to 50 of about 2,467 (183)
Astronomy & Astrophysics, 2022 Narrow-line Seyfert 1 (NLS1) galaxies are unevolved active galactic nuclei (AGNs) that exist predominantly in spiral galaxies. However, mostly due to the small number of sources studied, it has been under debate whether also the hosts of jetted NLS1 galaxies, a particular subclass of these sources hosting a relativistic jet, are disk-like or elliptical,
Varglund, I. +5 more
openaire +3 more sources
Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.Abstract A new proton radiation belt was identified during the geomagnetic superstorm of 10–11 May 2024. To investigate its origin, we use an MHD‐test particle simulation to model solar energetic proton (SEP) trapping and the evolution of the initial trapped proton population during the storm.
Murong Qin +10 more
wiley +1 more source
Mapping the dynamics, star-formation rates, and chemical properties of galaxies with integral field spectroscopy [PDF]
, 2005 Major advances in the development of instruments for eight and ten meter class telescopes are revolutionising our understanding of galaxy formation. In particular, Integral Field Spectrographs (which produce a three dimensional {x, y, velocity) map of a ...
Swinbank, Anthony Mark +1 more
core
Relativistic jets in narrow-line Seyfert 1 galaxies. New discoveries and open questions
, 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.
Orienti M. +18 more
core +1 more source
MAGNUM survey: Compact jets causing large turmoil in galaxies
, 2021 Context. Outflows accelerated by active galactic nuclei (AGN) are commonly observed in the form of coherent, mildly collimated high-velocity gas directed along the AGN ionisation cones and kinetically powerful (≳10
A. Marconi +29 more
core +1 more source
The shaping of the optical jet of the galaxy NGC 4258 [PDF]
International Astronomical Union Colloquium, 1989 SUMMARY.Hα + [NII] and red continuum CCD images as well as high resolution aperture synthesis CO maps were obtained in order to study the optical jet of the barred spiral galaxy NGC 4258. The CO observations show two clouds near the center of the galaxy; these clouds outline a channel and the Hα jet follows this channel. The observations are consistent
P. Martin +3 more
openaire +1 more source
Annalen der Physik, Volume 538, Issue 6, June 2026.This study examines slowly rotating traversable wormholes supported by string fluids whose properties change with radius. The matter smoothly shifts from a de Sitter‐like core to a string‐dominated exterior, producing a regular, horizon‐free spacetime.
A. Errehymy +5 more
wiley +1 more source
Simulations of jet heating in galaxy clusters: successes and challenges [PDF]
Monthly Notices of the Royal Astronomical Society, 2018 Accepted for publication on ...
Davide Martizzi +3 more
openaire +4 more sources
Quantifying the Impact of Relativistic Precession on Tidal Disruption Event Light Curves
Astronomische Nachrichten, Volume 347, Issue 5, June 2026.ABSTRACT The tidal field of a black hole can turn a star into a gas stream whose orbit can precess, especially if the a black hole is rapidly spinning. In this work, we investigate the impact of precession on the light curves of tidal disruption events (TDE).
Diego Calderón +4 more
wiley +1 more source
The role of jets in the formation of planets, stars and galaxies [PDF]
, 2009 To appear in the proceedings for "Structure Formation in the Universe: Galaxies, Stars and Planets", ed. G.
Pudritz, Ralph E. +2 more
openaire +2 more sources