A5115394875- Galaxies: Formation, Evolution, Phenomena
- Radio Astronomy Observations and Technology
- Astronomy and Astrophysical Research
Abstract We present multifrequency and high-resolution studies of a sample 24 radio transient sources discovered by comparing the NRAO VLA Sky Survey Very Large Array Survey. All them are characterized significant increase in flux density over past two decades. Their convex spectra, small sizes, high brightness temperatures typical for young GHz-peaked spectrum (GPS) indicative an active galactic nucleus (AGN) buried host galaxy. On other hand, they much weaker than archetypal GPS objects,...
We present multi-frequency and high-resolution studies of a sample 24 radio transients sources discovered by comparing the NRAO VLA Sky Survey (NVSS) Very Large Array (VLASS) surveys. All them are characterized significant increase in flux density over last two decades.Their convex spectra, small sizes high brightness temperatures typical for young gigahertz-peaked spectrum (GPS) indicative an AGN buried host galaxy. On other hand, they much weaker than archetypical GPS objects their...