5 papers
Chandra X-ray Spectral Evidence of the Dual AGN Nature of the Gravitational lens MG B2016+112 at z=3.273 with 175 pc separation
Daniel A. Schwartz, Julia M. Sisk-Reynes, Anna Barnacka
We use a new 175 ks Chandra X-ray observation of the z=3.273 radio-loud gravitational lens system MG B2016+112 to present definitive X-ray spectral evidence that it contains a dual…
MUSE spectroscopy of the compact dual AGN in the radio-loud gravitational lens MG B2016+112
Jianghao Huyan, Júlia M. Sisk-Reynés, Daniel A. Schwartz +4
Dual active galactic nuclei (AGN) are unique laboratories for studying how galaxy mergers trigger accretion onto supermassive black holes (SMBHs). However, at redshifts , only…
Speeding up Gravitational Lens Mass Models with Machine Learning: Applications in X-ray Astronomy
Alex Ostridge, Rafael Martínez-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…
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…
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…