Results 61 to 70 of about 4,173,094 (217)
RADIO PROPERTIES OF LOW-REDSHIFT BROAD LINE ACTIVE GALACTIC NUCLEI [PDF]
The Astronomical Journal, 2008 28 pages, 14 figures, accepted to ...
Rafter, Stephen E. +2 more
openaire +2 more sources
The bulk kinetic power of radio jets in active galactic nuclei？
, 2009 Based on the Konigl's inhomogeneous jet model, we estimate the jet parameters, such as bulk Lorentz factor Gamma, viewing angle theta and electron number density n(e) from radio very long-baseline interferometry and X-ray data for a sample of active ...
D. R. Jiang +5 more
core +1 more source
Varstrometry for Dual Active Galactic Nuclei Using Radio Interferometry: VaDAR with the VLBA
The Astrophysical JournalMultiple active galactic nuclei (multi-AGN) are a known result of galaxy mergers. Therefore, they are an important tool for studying the formation and dynamical evolution of galaxies and supermassive black holes. A novel method for the selection of multi-
Emma Schwartzman +8 more
doaj +1 more source
Radio and X-ray Observations of the Restarted Radio Galaxy in the Galaxy Cluster CL 0838+1948
Galaxies, 2021 We present VLA Low-band Ionosphere and Transient Experiment (VLITE) 338 MHz observations of the galaxy cluster CL 0838+1948. We combine the VLITE data with Giant Metrewave Radio Telescope 610 MHz observations and survey data.
Simona Giacintucci +4 more
doaj +1 more source
Small, EarlyView.This work presents tungsten‐modified nickel‐based catalysts for the urea oxidation reaction, highlighting strategies to boost catalytic performance. It focuses on tuning electronic structure, enriching accessible active sites, and designing advanced catalyst structures, providing guidance for the rational development of high‐performance UOR catalysts ...
Yi Zeng +7 more
wiley +1 more source
Very high energy gamma ray observations of southern hemisphere blazars [PDF]
, 1997 This thesis is concerned with very high energy γ-ray observations of blazars observable from the southern hemisphere. The data presented were obtained using the recently deployed University of Durham Mark 6 high sensitivity Čerenkov telescope. Chapters 1
Dickinson, M.R., Dickinson, Mark R.
core
Arp 299-A: More than "just" a prolific supernova factory [PDF]
, 2010 We present partial results from our monitoring of the nuclear region of the starburst galaxy IC 694 (=Arp 299-A) at radio wavelengths, aimed at discovering recently exploded core-collapse supernovae, as well as to determine their rate of explosion, which
Marco Bondi +9 more
core +1 more source
The Astrophysical Journal, 2023 Based on our dedicated Swift monitoring program, MOMO, OJ 287 is one of the best-monitored blazars in the X-ray–UV–optical regime. Here, we report results from our accompanying, dense, multifrequency (1.4–44 GHz) radio monitoring of OJ 287 between 2015 ...
S. Komossa +14 more
doaj +1 more source
The Past and Future of East Asia to Italy: Nearly Global VLBI
Galaxies, 2023 We present here the East Asia to Italy Nearly Global VLBI (EATING VLBI) project. How this project started and the evolution of the international collaboration between Korean, Japanese, and Italian researchers to study compact sources with VLBI ...
Gabriele Giovannini +31 more
doaj +1 more source
Building a Continental‐Scale Geodetic Network: The Plate Boundary Observatory (PBO)
Perspectives of Earth and Space Scientists, Volume 7, Issue 1, December 2026.Abstract The Plate Boundary Observatory (PBO) transformed the use of geodesy in North America to study crustal deformation and plate boundary processes by establishing a continental‐scale, standardized, open‐access geodetic network. Built and operated by UNAVCO between 2003 and 2018 as part of the National Science Foundation (NSF)‐funded EarthScope ...
Emily E. Zawacki +5 more
wiley +1 more source