Conferències al DAA. Xarrada a càrrec de Laura Vega-García, del Max-Planck-Institut für Radioastronomie, Bonn (Alemanya). Lloc: Seminari del Departament d'Astronomia i Astrofísica, 4a planta de l'Edifici d'Investigació, a Burjassot. Dia: dijous 21 de setembre de 2017. Hora: 11:00.
RESUM:
Space VLBI observations with RadioAstron provide a remarkable improvement of angular resolution. The RadioAstron Key Science Program "Structure and Physics of Compact Jets in AGN" exploits this opportunity by detailed, multifrequency imaging of a number of selectedextragalactic radio sources. In this talk, I present the results obtained from the KSP observations of the relativistic jet in the quasar 0836+710 at 1.6, 5, and 22 GHz.
The space VLBI images of the jet reveal a strongly transversely resolved flow, with a wealth of structure on scales ranging from 0.2 to 150 milliarcseconds. At 22GHz, the source shows also asymmetries that need to be further investigated.
The multifrequency data set can be used to study spectral morphology of the jet and obtain some physical parameters. The high resolution images of another two sources will also be presented: 1642+690, and 3C273.
Imatges:
