171 citations · 828 across the 23 of their papers we have counts for
26 papers
Spherinator and HiPSter: Representation Learning for Unbiased Knowledge Discovery from Simulations
Kai L. Polsterer, Bernd Doser, Andreas Fehlner +1
Simulations are the best approximation to experimental laboratories in astrophysics and cosmology. However, the complexity, richness, and large size of their outputs severely limit…
A Gaussian process cross-correlation approach to time delay estimation in active galactic nuclei
F. Pozo Nuñez, N. Gianniotis, K. L. Polsterer
We present a probabilistic cross-correlation approach to estimate time delays in the context of reverberation mapping (RM) of Active Galactic Nuclei (AGN). We reformulate the tradi…
Modeling photometric reverberation mapping data for the next generation of big data surveys. Quasar accretion disks sizes with the LSST
F. Pozo Nuñez, C. Bruckmann, S. Desamutara +5
Photometric reverberation mapping can detect the radial extent of the accretion disc (AD) in Active Galactic Nuclei by measuring the time delays between light curves observed in di…
Convolutional autoencoders for spatially-informed ensemble post-processing
Sebastian Lerch, Kai L. Polsterer
Ensemble weather predictions typically show systematic errors that have to be corrected via post-processing. Even state-of-the-art post-processing methods based on neural networks…
Disentangling the optical AGN and Host-galaxy luminosity with a probabilistic Flux Variation Gradient
N. Gianniotis, F. Pozo Nuñez, K. L. Polsterer
We present a novel Probabilistic Flux Variation Gradient (PFVG) approach to to separate the contributions of active galactic nuclei (AGN) and host galaxies in the context of photom…
From Photometric Redshifts to Improved Weather Forecasts: machine learning and proper scoring rules as a basis for interdisciplinary work
Kai Lars Polsterer, Antonio D'Isanto, Sebastian Lerch
The amount, size, and complexity of astronomical data-sets and databases are growing rapidly in the last decades, due to new technologies and dedicated survey telescopes. Besides d…