Results 51 to 60 of about 2,467 (183)

Jet–Accretion System in the Nearby mJy Radio Galaxies

The Astrophysical Journal, 2021
Abstract It is generally thought that FRII radio galaxies host thin optically thick disks, while FRIs are powered by advection-dominated accretion flows. Sources with an efficient engine are optically classified as high-excitation radio galaxies (HERGs) and those with an inefficient motor as low-excitation radio galaxies (LERGs ...
Paola Grandi, Eleonora Torresi, Duccio Macconi, Bia Boccardi, Alessandro Capetti   +4 more
openaire   +3 more sources

The Search for Very High Energy γ-rays from Misaligned AGN [PDF]

, 2013
The aim of this work is to study the potential for emission at very high energies (100 GeV) by misaligned active galactic nuclei (AGN) and the future prospects for observations of these objects with the next generation imaging atmospheric Cherenkov ...
CHEESEBROUGH, ALISTAIR
core  

Astrophysical jets: insight into long term hydrodynamics. Article and Supplementary Information [PDF]

, 2011
Astrophysical jets are ubiquitous throughout the universe. They can be observed to emerge from protostellar objects, stellar x-ray binaries and supermassive black holes located at the center of active galaxies, and they are believed to originate from a ...
E Bodenschatz, Eberhard Bodenschatz, ANDREA MIGNONE, Massaglia, S., DE PONTE, SERGIO, E. Bodenschatz, Belan, M., Mignone, Andrea, Sergio De Ponte, S Massaglia, S. Massaglia, MARCO BELAN, Tordella, D., A Mignone, Tordella, Daniela, Bodenschatz, E. ; https://orcid.org/, Bodenschatz, E., Attilio Ferrari, A. Ferrari, Massaglia, Silvano, Belan, Marco, M Belan, D. Tordella, De Ponte, S., A. Mignone, A Ferrari, S De Ponte, Ferrari, A., SILVANO MASSAGLIA, D Tordella, Mignone, A.   +30 more
core   +1 more source

Survey on AI‐Enabled Computer Vision Technologies and Applications for Space Robotic Missions

Journal of Field Robotics, Volume 43, Issue 4, Page 2553-2584, June 2026.
ABSTRACT This survey provides a comprehensive overview of recent advancements and challenges in Artificial Intelligence (AI)‐enabled computer vision (CV) techniques for space robotic missions, spanning critical phases such as Entry, Descent, and Landing (EDL), orbital operations, and planetary surface exploration.
Maciej Quoos, Steven Kay, Julia Wajoras, Robert Field, Evridiki V. Ntagiou, Fakher Mohammad, Yang Gao   +6 more
wiley   +1 more source

Predicting Nitrogen Isotope Fractionation in Nitrate Deposition on Early Mars

Journal of Geophysical Research: Planets, Volume 131, Issue 6, June 2026.
Abstract Noachian and early Hesperian Mars were likely warm and wet, with an atmosphere abundant in molecular nitrogen. The recent discovery of nitrate deposits in the Yellowknife Bay mudstones at Gale Crater confirm the existence of nitrogen oxides (NOX) on Noachian Mars. The processes responsible for the production of these nitrates would fractionate
J. Shawcross, D. J. Adams, M. L. Wong, K. J. Smith, Y. L. Yung   +4 more
wiley   +1 more source

The characteristics of galaxies with powerful radio jets

, 2023
Radio jets are important to the evoultion of galaxies. However, it is still not fully understood how a radio jet can be triggered. This thesis mainly investigates the morphology and kinematics of galaxies hosting radio AGNs detected in the LOFAR Two ...
Zheng, X.
core  

Narrow-Line Seyfert 1 Galaxies With Absorbed Jets–Insights From Radio Spectral Index Maps [PDF]

, 2022
 Narrow-line Seyfert 1 (NLS1) galaxies are active galactic nuclei (AGN) believed to be in the early stages of their evolution. A fraction of them have been found to host relativistic jets.
Järvelä Emilia, Berton  Marco, Crepaldi Luca   +2 more
core   +1 more source

Terrestrial Analogs to Titan for Geophysical Research

Reviews of Geophysics, Volume 64, Issue 2, June 2026.
Abstract Saturn's moon Titan exhibits remarkable parallels to the Earth in many geophysical and geological processes not found elsewhere in the solar system at the present day. These include a nitrogen atmosphere with a condensible gas—methane—replacing the Earth's water, leading to an active meteorology with rainfall and surface manifestations ...
Conor A. Nixon, Samuel Birch, Audrey Chatain, Charles Cockell, Kendra K. Farnsworth, Peter M. Higgins, Stéphane Le Mouélic, Rosaly M. C. Lopes, Michael J. Malaska, Mohit Melwani Daswani, Kelly E. Miller, Catherine D. Neish, Olaf G. Podlaha, Jani Radebaugh, Lauren R. Schurmeier, Ashley Schoenfeld, Krista M. Soderlund, Anezina Solomonidou, Christophe Sotin, Nicholas A. Teanby, Tetsuya Tokano, Steven D. Vance   +21 more
wiley   +1 more source

Jet Interaction with Galaxy Cluster Mergers

The Astrophysical Journal
Abstract Active galactic nucleus (AGN) bubbles in cool-core galaxy clusters are believed to facilitate the transport of cosmic-ray electrons (CRe) throughout the cluster. Recent radio observations reveal the complex morphologies of cluster diffuse emission, potentially linked to interactions between AGN bursts and the cluster environment.
P. Domínguez-Fernández, J. ZuHone, R. Weinberger, E. Bellomi, L. Hernquist, P. Nulsen, G. Brunetti   +6 more
openaire   +3 more sources

DISCOVERY OF A PSEUDOBULGE GALAXY LAUNCHING POWERFUL RELATIVISTIC JETS [PDF]

The Astrophysical Journal, 2016
ABSTRACT Supermassive black holes launching plasma jets at close to the speed of light, producing gamma-rays, have ubiquitously been found to be hosted by massive elliptical galaxies. Since elliptical galaxies are generally believed to be built through galaxy mergers, active galactic nuclei (AGN) launching relativistic jets are ...
Jari K. Kotilainen, Jonathan León-Tavares, Alejandro Olguín-Iglesias, Maarten Baes, Christopher Anórve, Vahram Chavushyan, Luis Carrasco   +6 more
openaire   +3 more sources