Results 91 to 100 of about 166 (155)

UEG Week 2025 Poster Presentations

United European Gastroenterology Journal, Volume 13, Issue S8, Page S803-S1476, October 2025.
wiley   +1 more source

Windy or Not: Radio Parsec-scale Evidence for a Broad-line Region Wind in Radio-quiet Quasars

The Astrophysical Journal
Does a broad-line region (BLR) wind in radio-quiet (RQ) active galactic nuclei (AGN) extend to parsec scales and produce radio emission? We explore the correlations between a parsec-scale radio wind and the BLR wind in a sample of 19 RQ Palomar–Green ...
Sina Chen, Ari Laor, Ehud Behar, Ranieri D. Baldi, Joseph D. Gelfand, Amy E. Kimball, Ian M. McHardy, Gabor Orosz, Zsolt Paragi   +8 more
doaj   +1 more source

Intra-night Optical Variability and Radio Characteristics of Extremely Radio-loud Narrow-line Seyfert 1 Galaxies

The Astrophysical Journal
Narrow-line Seyfert 1 galaxies (NLS1s) are generally known to be radio-quiet active galactic nuclei, but a tiny subset of them are found to be extremely radio-loud with radio loudness parameter ( R _1.4 GHz ) > 100.
Veeresh Singh, Parveen Kumar, Avik Kumar Das, Vineet Ojha   +3 more
doaj   +1 more source

ePoster

European Journal of Neurology, Volume 32, Issue S1, June 2025.
wiley   +1 more source

Ruling Out Compact Jets as the Dominant Source of Radio Emission in Radio-quiet, High-Eddington-ratio Active Galactic Nuclei

The Astrophysical Journal
The origin of core radio emission in radio-quiet active galactic nuclei (AGNs) is still actively debated. General-relativistic magnetohydrodynamics simulations often predict the launching of moderately large-scale jets from super-Eddington accretion ...
Jeremiah D. Paul, Richard M. Plotkin
doaj   +1 more source

UEG Week 2024 Moderated Posters

United European Gastroenterology Journal, Volume 12, Issue S8, Page 201-664, October 2024.
wiley   +1 more source

A Shock-based Interpretation of Radio and X-Ray Emission in Active Galactic Nuclei

The Astrophysical Journal
We propose a shock-based framework to interpret the radio and X-ray emission in active galactic nuclei (AGNs), whose origin remains an open problem. In this framework, the radio emission is produced by synchrotron radiation in an accretion flow, or a jet
Fan Wu, Benzhong Dai
doaj   +1 more source

UEG Week 2024 Oral Presentations

United European Gastroenterology Journal, Volume 12, Issue S8, Page 9-200, October 2024.
wiley   +1 more source

Mid-infrared Properties of Narrow-line Seyfert 1 Galaxies Detected by LoTSS DR2

The Astrophysical Journal
Narrow-line Seyfert 1 galaxies (NLS1s), a subclass of active galactic nuclei (AGNs) in an early stage of the accretion process, are also found to host relativistic jets. However, currently known jetted NLS1s are rare. The majority of NLS1s are undetected
Xu-Liang Fan
doaj   +1 more source

A statistical investigation of radio-loudness in SDSS DR16Q quasars using ML-based classification and physical feature analysis

European Physical Journal C: Particles and Fields
The problem of quasar classification comes in the class of highly imbalanced classification problems since Radio-loud quasars are rare and make up very small portion of total quasar population. In this work,We perform classification of Radio-Loud quasars
Ramkrishna Joshi, Vivek Shinde
doaj   +1 more source