3 papers
astro-ph.GA2026
Speeding up Gravitational Lens Mass Models with Machine Learning: Applications in X-ray Astronomy
Alex Ostridge, Rafael MartÃnez-Galarza, Júlia M. Sisk-Reynés +2
Multi-wavelength observations of quadruply lensed quasars constitute a powerful probe of cosmology, dark matter substructure along the line of sight, and the structure of X-ray emi…
astro-ph.HE2026
Determining the spatial origin of X-ray and optical emission in the strongly lensed radio-quiet quasar GraL J065904.1+162909 to hundreds of parsecs
Julia Sisk-Reynes, Daniel Schwartz, Anna Barnacka +2
We perform milliarcsecond X-ray astrometry of the quadruply lensed radio-quiet quasar GraL J065904.1+162909 (J0659). This quasar is lensed into four images and was disc…
astro-ph.HE2025
Milli-arcsec X-ray positions and X-ray varstrometry for the strongly lensed AGN HE 0435-1223
Alysa Rogers, Daniel Schwartz, Cristiana Spingola +1
Active galactic nuclei (AGN) are some of the most powerful objects in the Universe. For this reason, they can be observed up to high redshifts (z), giving valuable insights into th…