activity
20232026
most citedThe High Energy X-ray Probe (HEX-P): Constraining Supermassive Black Hole Growth with Population Spin Measurements

3 citations · 9 across the 8 of their papers we have counts for

collaborators
Showing 2026Show all

2 papers · 1 filter

astro-ph.GA2026

Gaia GraL X.: The GraL catalogue of gravitationally lensed quasars Matched with \textit{Gaia} data, redshifts, and time delays

C. Ducourant, R. Teixeira, P. H. Vale-Cunha +25

Determining the Hubble constant tension requires alternative strategies, and multiply imaged quasars, with their intermediate redshifts, can potentially be used in this regard. We…

astro-ph.HE2026★ 2 cited

Constraining black hole spin in PG 1535+547 amidst complex multi-layered absorption

A. Madathil-Pottayil, D. J. Walton, Jiachen Jiang +7

We present a spectroscopic analysis of XMM-Newton and NuSTAR observations of the 'complex' NLS1 PG 1535+547 at redshift . These observations span three epochs: 2002 and 20…