Results 71 to 80 of about 238,671 (290)
Significant core shift variability in parsec-scale jets of active galactic nuclei [PDF]
Monthly notices of the Royal Astronomical Society, 2018 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
Questions and challenges of what powers galactic outflows in active galactic nuclei [PDF]
, 2018 Different mechanisms can drive outflows in active galactic nuclei (AGN), but it is often unclear which mechanism dominates, if any. To quantify the impact of AGN feedback on galaxy evolution, the driving mechanism of outflows must be better understood.
arxiv +1 more source
THE EVOLUTION OF ACTIVE GALACTIC NUCLEI AND THEIR SPINS [PDF]
The Astrophysical Journal, 2013 ApJ, in ...
Marek Sikora +5 more
openaire +4 more sources
How to Manufacture Photonic Metamaterials
Advanced Materials Technologies, EarlyView.Metamaterials boast applications such as invisibility and “hyperlenses” with resolution beyond the diffraction limit, but these applications haven’t been exploited in earnest and the market for them hasn’t grown much likely because facile and economical methods for fabricating them without defect has not emerged.
Apurba Paul, Gregory Timp
wiley +1 more source
Revisiting the Unified Model of Active Galactic Nuclei [PDF]
, 2015 This review describes recent developments related to the unified model of active galactic nuclei (AGNs). It focuses on new ideas about the origin and properties of the central obscurer (torus) and the connection to its surroundings.
H. Netzer
semanticscholar +1 more source
Advanced Science, EarlyView.This study identifies a key signaling pathway involving the environmental sensor AhR and antimicrobial peptides, such as BD‐1, in the regulation of intestinal homeostasis. It highlights the role of BD‐1 in regulating gut microbiota and the intestinal immune response.
Manikandan Palrasu +16 more
wiley +1 more source
Observational Evidence of Active Galactic Nuclei Feedback
, 2012 Radiation, winds, and jets from the active nucleus of a massive galaxy can interact with its interstellar medium, and this can lead to ejection or heating of the gas. This terminates star formation in the galaxy and stifles accretion onto the black hole.
A. Fabian
semanticscholar +1 more source
Black Hole–Galaxy Scaling Relationships for Active Galactic Nuclei with Reverberation Masses [PDF]
Astrophysical Journal, 2018 We have utilized high-resolution optical Hubble Space Telescope images and deep, ground-based near-infrared images to examine the host galaxies of 37 active galactic nuclei (AGNs) with reverberation-based black hole masses.
M. Bentz, E. Manne-Nicholas
semanticscholar +1 more source
The Astrophysical Journal3C 264 is one of the few FRI radio galaxies with detected TeV emission. It is a low-luminosity active galactic nucleus (LLAGN) and is generally associated with a radiatively inefficient accretion flow (RIAF).
Ka-Wah Wong +6 more
doaj +1 more source
The Astrophysical Journal Letters, 2023 Recent studies have proposed that the nuclear millimeter continuum emission observed in nearby active galactic nuclei (AGNs) could be created by the same population of electrons that gives rise to the X-ray emission that is ubiquitously observed in ...
Claudio Ricci +12 more
doaj +1 more source