92 citations · 818 across the 42 of their papers we have counts for
4 papers · 1 filter
Using strong gravitational lensing to zoom in on high-redshift galaxies
Cristiana Spingola
The centres of galaxies are powerful laboratories to test the current CDM model for structure formation and evolution. While these sub-galactic scales can be directly investigat…
Direct observation of an extended X-ray jet at =6.1
L. Ighina, A. Moretti, F. Tavecchio +6
We report on the direct observation of an extended X-ray jet in the =6.1 radio-loud Active Galactic Nucleus PSO J030947.49+271757.31 from a deep Chandra X-ray observation (128 k…
Minute-timescale variability in the X-ray emission of the highest redshift blazar
Alberto Moretti, Gabriele Ghisellini, Alessandro Caccianiga +9
We report on two Chandra observations of the quasar PSO J0309+27, the most distant blazar observed so far (z=6.1), performed eight months apart, in March and November 2020. Previou…
Resolving Complex Inner X-ray Structure of the Gravitationaly Lensed AGN MGB2016+112
Daniel Schwartz, Cristiana Spingola, Anna Barnacka
We use a Chandra X-ray observation of the gravitationally lensed system MGB2016+112 at z=3.273 to elucidate presence of at least two X-ray sources. We find that these sources are c…