395 citations · 2.4k across the 119 of their papers we have counts for
5 papers · 2 filters
The radio structure of the peculiar narrow-line Seyfert 1 galaxy candidate J1100+4421
K. É. Gabányi, S. Frey, Z. Paragi +5
Narrow-line Seyfert 1 galaxies (NLS1) are an intriguing subclass of active galactic nuclei. Their observed properties indicate low central black hole mass and high accretion rate.…
Radio spectra of bright compact sources at z>4.5
Rocco Coppejans, Sjoert van Velzen, Huib T. Intema +10
High-redshift quasars are important to study galaxy and active galactic nuclei (AGN) evolution, test cosmological models, and study supermassive black hole growth. Optical searches…
VLBI observations of four radio quasars at : blazars or not?
H. -M. Cao, S. Frey, K. É. Gabányi +5
Blazars are active galactic nuclei (AGN) whose relativistic jets point nearly to the line of sight. Their compact radio structure can be imaged with very long baseline interferomet…
Searching for a pair of accreting supermassive black holes in J1425+3231
K. É. Gabányi, S. Frey, Z. Paragi +2
In hierarchical structure formation scenarios, merging galaxies are expected to be seen in different phases of their coalescence. Simulations suggest that simultaneous activity of…
Open our eyes to wider fields in VLBI surveys
Kristóf Rozgonyi, Sándor Frey
The observation and imaging of hundreds or thousands of radio sources with the technique of very long baseline interferometry (VLBI) is a computationally intensive task. However, t…