African VLBI Network Training Site


Invited Talk: Friday 27 April - Dr Leah Morabito

27 April 2018 09:00 - 10:00

Title: VLBI at Low Frequencies: looking at AGN in XMM-LSS

Author: Dr Leah Morabito 
              Postdoctoral Fellow
              Christ Church
              University of Oxford

Traditional very long baseline interferometry (VLBI) instruments provide exquisite resolution, but for small fields of view. While advancements have been made in imaging fields a few arcminutes across, surveying at high resolution still requires a considerable amount of telescope resources. The Low Frequency Array (LOFAR) offers sub-arcsecond resolution and its phased array design opens up fields of view of a few square degrees per every individual pointing. In this talk, I will discuss the application of a new strategy for wide-field, high-resolution efficient surveying with LOFAR, and show several highlights from looking at active galactic nuclei (AGN) in the XMM-LSS field.

More about the author:


Leah Morabito is a Postdoctoral Fellow at Christ Church, the University of Oxford, where she works on high-resolution imaging at low frequencies. Her research interests include radio-loud and radio-quiet active galactic nuclei (AGN), and how they impact galaxy evolution. She uses traditional very long baseline interferometry (VLBI) techniques to make sub-arcsecond images at frequencies at 60 to 150 MHz, which provides detailed morphological information on radio AGN. As a leading member of the Low Frequency Array long-baseline working group, she is developing a strategy to accomplish high-resolution imaging at these frequencies across wide (~ 3 square degrees per observation) fields of view.