activity
19992026
most citedGaia Data Release 2: Photometric content and validation

756 citations · 7.3k across the 103 of their papers we have counts for

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5 papers · 1 filter

astro-ph.CO2022★ 4 cited

Optimising the shape of photometric redshift distributions with clustering cross-correlations

Benjamin Stölzner, Benjamin Joachimi, Andreas Korn +1

We present an optimisation method for the assignment of photometric galaxies into a chosen set of redshift bins. This is achieved by combining simulated annealing, an optimisation…

astro-ph.CO2021

Forecasting the potential of weak lensing magnification to enhance LSST large-scale structure analyses

Constance Mahony, Maria Cristina Fortuna, Benjamin Joachimi +4

Recent works have shown that weak lensing magnification must be included in upcoming large-scale structure analyses, such as for the Vera C. Rubin Observatory Legacy Survey of Spac…

astro-ph.CO2020★ 22 cited

Self-calibration and robust propagation of photometric redshift distribution uncertainties in weak gravitational lensing

B. Stölzner, B. Joachimi, A. Korn +2

We present a method that accurately propagates residual uncertainties in photometric redshift distributions into the cosmological inference from weak lensing measurements. The reds…

astro-ph.CO2019★ 15 cited

Target Neutrino Mass Precision for Determining the Neutrino Hierarchy

Constance Mahony, Boris Leistedt, Hiranya V. Peiris +5

Recent works combining neutrino oscillation and cosmological data to determine the neutrino hierarchy found a range of odds in favour of the normal hierarchy. These results arise f…

astro-ph.CO2012★ 2 cited

AGN environments: is the viewing angle sufficient to explain the difference between broad-line and narrow-line AGN? -- A low-redshift study of close AGN neighbours. Paper I

Beatriz Villarroel, Andreas Korn, Yoshiki Matsuoka

The unification of active galactic nuclei (AGN) is a model that has been difficult to test due to the lack of knowledge on the intrinsic luminosities of the objects. We present a t…