Joint NRAO/Chandra Accepted Cycle 21 Targets and Abstracts
Proposal Number
Subject Category
PI Name
Chandra Time
Title
21700598
ACTIVE GALAXIES AND QUASARS
E. Behar
22.00ks
Revealing the Inner Core Behavior of a NLS1
Subject Category: ACTIVE GALAXIES AND QUASARS
Proposal Number: 21700598
Title: Revealing the Inner Core Behavior of a NLS1
PI Name: E. Behar
A correlation in luminosity suggests a physical connection between the radio emission from radio-quiet (RQ) AGN
and the X-ray accretion disk corona. Seyfert galaxies vary at high radio frequencies, where synchrotron absorption is
diminished, on inter-day time scales. However, intra-day variability, typical in X-rays, has never been measured in the
radio. We propose to measure flux variability of Ark 564 at 45 GHz continuously over 6 hrs, simultaneously with
Chandra X-ray monitoring. Ark 564 is chosen owing to its well-documented X-ray variability over time scales as short
as 20 minutes. The radio light curve will be compared and cross-correlated with the X-ray light curve.