Results 51 to 60 of about 576 (185)
Fermi-LAT Detection of the Low-luminosity Radio Galaxy NGC 4278 during the LHAASO Campaign
The Astrophysical Journal LettersWe present a study of the high-energy properties of the compact symmetric object NGC 4278, recently associated with a TeV source by the Large High Altitude Air Shower Observatory (LHAASO) collaboration.
Ettore Bronzini +3 more
doaj +1 more source
Enceladus Water Plume Modeling Using DSMC
Journal of Geophysical Research: Planets, Volume 130, Issue 9, September 2025.Abstract This study investigates the water plumes of Saturn's moon, Enceladus, using Direct Simulation Monte Carlo (DSMC) modeling to analyze venting dynamics and plume structures. Building on prior research, we employ a parametrized DSMC approach to model water vapor and ice particle flows, leveraging Cassini spacecraft data from instruments such as ...
A. Mahieux +9 more
wiley +1 more source
First X-Ray Polarimetric View of a Low-luminosity Active Galactic Nucleus: The Case of NGC 2110
The Astrophysical JournalLow-luminosity active galactic nuclei (LLAGN) provide a unique view of Comptonization and nonthermal emission from accreting black holes in the low accretion rate regime.
Sudip Chakraborty +23 more
doaj +1 more source
JWST NIRCam Imaging of NGC 4258. I. Observation Overview
The Astrophysical JournalWe present James Webb Space Telescope (JWST) Near-Infrared Camera imaging of the nearby Seyfert 1.9 galaxy NGC 4258, which hosts strong star formation regions as well as an anomalous jet-like radio structure that extends through a significant portion of ...
Travis C. Fischer +5 more
doaj +1 more source
No Galaxy-scale [C ii] Fast Outflow in the z = 6.72 Red Quasar HSC J1205–0000
The Astrophysical JournalHSC 120505.09-000027.9 (J1205–0000) is one of the highest redshift ( z = 6.72) dust-reddened quasars (red quasars) known to date. We present an improved analysis of Atacama Large Millimeter/submillimeter Array data of the [C ii ] 158 μ m line and the ...
Mahoshi Sawamura +19 more
doaj +1 more source
Multiple Emission Regions in Jets of the Low-Luminosity Active Galactic Nucleus in NGC 4278
The Astrophysical JournalThe Large High Altitude Air Shower Observatory (LHAASO) has detected very-high-energy gamma rays from the low-ionization nuclear emission-line region galaxy NGC 4278, which has a low-luminosity active galactic nucleus (LLAGN) and symmetric, mildly ...
Samik Dutta, Nayantara Gupta
doaj +1 more source
The DELVE Quadruple Quasar Search. I. A Lensed Low-luminosity Active Galactic Nucleus
The Astronomical JournalA quadruply lensed source, J125856.3–031944, has been discovered using the DELVE survey and Wide-field Infrared Survey Explorer W1–W2 colors. Follow-up direct imaging carried out with the Magellan Baade 6.5 m telescope is analyzed, as is spectroscopy ...
Paul L. Schechter +27 more
doaj +1 more source
The Astrophysical JournalTheoretical and numerical simulations of black hole hot accretion flows have shown the ubiquitous existence of winds and predicted their properties, such as velocity and mass flux.
Fangzheng Shi +3 more
doaj +1 more source
DISK CORONA INTERACTION: MECHANISM FOR THE DISK TRUNCATION AND SPECTRUM CHANGE IN LOW-LUMINOSITY ACTIVE GALACTIC NUCLEI [PDF]
, 2012 Ronald E. Taam +3 more
openalex +1 more source
ReveaLLAGN 0: First Look at JWST MIRI Data of Sombrero and NGC 1052
The Astrophysical JournalWe present the first results from the Revealing Low-Luminosity Active Galactic Nuclei (ReveaLLAGN) survey, a JWST survey of seven nearby LLAGNs. We focus on two observations with the Mid-Infrared Instrument (MIRI)’s Medium-Resolution Spectrometer of the ...
Kameron Goold +30 more
doaj +1 more source