Results 101 to 110 of about 23,272 (235)
Significant core shift variability in parsec-scale jets of active galactic nuclei [PDF]
The apparent position of jet base (core) in radio-loud active galactic nuclei changes with frequency because of synchrotron self-absorption. Studying this `core shift` effect enables us to reconstruct properties of the jet regions close to the central ...
A. Plavin+7 more
semanticscholar +1 more source
Abstract The use of matrix‐assisted laser desorption/ionization (MALDI) mass spectrometry for the analysis of carbohydrates and glycoconjugates is a well‐established technique and this review is the 12th update of the original article published in 1999 and brings coverage of the literature to the end of 2022.
David J. Harvey
wiley +1 more source
VLA FRAMEx. I. Wideband Radio Properties of the AGN in NGC 4388
We present the first results from Karl G. Jansky Very Large Array (VLA) observations as a part of the Fundamental Reference Active Galactic Nucleus (AGN) Monitoring Experiment, a program to understand the relationship between AGN accretion physics and ...
Andrew J. Sargent+7 more
doaj +1 more source
Multifrequency Studies of Active Galactic Nuclei in the Planck Satellite Era
The multi-epoch single-survey Planck satellite data have given a rare glimpse into how the radio spectra of active galactic nuclei (AGN) evolve in time.
Anne Lähteenmäki+1 more
doaj +1 more source
Spatiotemporal Control Over Circadian Rhythms With Light
ABSTRACT Circadian rhythms are endogenous biological oscillators that synchronize internal physiological processes and behaviors with external environmental changes, sustaining homeostasis and health. Disruption of circadian rhythms leads to numerous diseases, including cardiovascular and metabolic diseases, cancer, diabetes, and neurological disorders.
Dušan Kolarski+2 more
wiley +1 more source
Evidence for Toroidal B-Field Components in AGN Jets on Kiloparsec Scales
Though helical magnetic fields are generally believed to arise when the jets of Active Galactic Nuclei (AGN) are launched, it is still unclear what role they play (and if they survive) to the largest jet scales.
Sebastian Knuettel+2 more
doaj +1 more source
The Role of Salt Tectonics in the 2021 Central Adriatic Seismic Sequence
Abstract On 27 March 2021 a 3‐months lasting seismic sequence struck the Central Adriatic Basin that is part of the Adria plate, a relatively undeformed plate since recent times. Analyzing the waveform data acquired by the Italian and Croatian seismic networks, we computed the location parameters of 160 earthquakes and the focal mechanisms of the Mw 5 ...
F. Di Luccio+12 more
wiley +1 more source
Radio Spectroscopy of Active Galactic Nuclei
Radio spectroscopy offers a number of tools for studying a large variety of astrophysical phenomena, ranging from stars and their environment to interstellar and intergalactic medium, active galactic nuclei (AGN) and distant quasars. Main targets of extragalactic radio spectroscopy are atomic and molecular material in galaxies, HII regions, and maser ...
openaire +2 more sources
Fast radio bursts in the discs of active galactic nuclei
ABSTRACT Fast radio bursts (FRBs) are luminous millisecond-duration radio pulses with extragalactic origin, which were discovered more than a decade ago. Despite the numerous samples, the physical origin of FRBs remains poorly understood. FRBs have been thought to originate from young magnetars or accreting compact objects (COs). Massive
Z Y Zhao, K Chen, F Y Wang, Zi-Gao Dai
openaire +2 more sources
To facilitate new studies of galaxy-merger-driven fueling of active galactic nuclei (AGNs), we present a catalog of 387 AGNs that we have identified in the final population of over 10,000 z < 0.15 galaxies observed by the Sloan Digital Sky Survey-IV ...
Julia M. Comerford+9 more
doaj +1 more source