Joint XMM/Chandra Accepted Cycle 23 Targets & Abstracts

Proposal Number Subject Category PI Name Chandra Time Title
23700009 ACTIVE GALAXIES AND QUASARS A. Lobban 60.00ks Spectral-Timing Analysis of NGC 6814
23800004 CLUSTERS OF GALAXIES Boehringer 30.00ks Studying Two Massive Clusters to be used as Gravitational Lens Telescopes

Proposal Number: 23700009
Title: Spectral-Timing Analysis of NGC 6814
PI Name: A. Lobban
Abstract: We propose the first simultaneous XMM-Newton and NuSTAR observation (130 ks) of the highly-variable AGN NGC 6814. We will apply the latest self-consistent broadband spectroscopic models, robustly anchoring the fit with simultaneous UV/optical and hard X-ray measurements. We will also track the rapid variations of the source, extending Fourier lag measurements into the reflection band > 10 keV for the first time. Additionally, through the first ever Chandra observation of this source (60 ks), we will resolve the Fe K profile for the first time, allowing us to disentangle any components of inner and outer disc reflection.

Proposal Number: 23800004
Title: Studying Two Massive Clusters to be used as Gravitational Lens Telescopes
PI Name: Boehringer
Abstract: This is a proposal for reobservation of two clusters with highly flared observational data from a systematic programme granted during AO18 to study the most massive clusters in the redshift range z = 0.25 - 0.5 - ideal candidates for gravitational lens telescopes - which had no pointed X-ray observations so far. We require sufficiently good data to characterise their properties for lensing studies and their use as gravitational lens telescopes. For two clusters, including one we like to reobserve, we have obtained HST observations within the same programme. In addition these X-ray observations complete an important volumelimited sample of massive clusters to be used for a range of cosmological studies. Both clusters with insufficient data show peculiar structure which makes their study exciting on their own. To better resolve crucial structures in the cluster centres we also ask for short Chandra exposures.