1 code implementation • 30 Dec 2023 • Jalo Nousiainen, Byron Engler, Markus Kasper, Chang Rajani, Tapio Helin, Cédric T. Heritier, Sascha P. Quanz, Adrian M. Glauser
RL is an active branch of the machine learning research field, where control of a system is learned through interaction with the environment.
Model-based Reinforcement Learning reinforcement-learning +1
no code implementations • 13 Dec 2023 • Timothy D. Gebhard, Jonas Wildberger, Maximilian Dax, Daniel Angerhausen, Sascha P. Quanz, Bernhard Schölkopf
Atmospheric retrievals (AR) characterize exoplanets by estimating atmospheric parameters from observed light spectra, typically by framing the task as a Bayesian inference problem.
1 code implementation • 6 Sep 2023 • Timothy D. Gebhard, Daniel Angerhausen, Björn S. Konrad, Eleonora Alei, Sascha P. Quanz, Bernhard Schölkopf
When training and evaluating our method on two publicly available datasets of self-consistent PT profiles, we find that our method achieves, on average, better fit quality than existing baseline methods, despite using fewer parameters.
1 code implementation • 7 Apr 2022 • Timothy D. Gebhard, Markus J. Bonse, Sascha P. Quanz, Bernhard Schölkopf
Our HSR-based method provides an alternative, flexible and promising approach to the challenge of modeling and subtracting the stellar PSF and systematic noise in exoplanet imaging data.
no code implementations • 3 Dec 2020 • Matthew A. Kenworthy, Frans Snik, Christoph U. Keller, David Doelman, Emiel H. Por, Olivier Absil, Brunella Carlomagno, Mikael Karlsson, Elsa Huby, Adrian M. Glauser, Sascha P. Quanz, William D. Taylor
ERIS is a diffraction limited thermal infrared imager and spectrograph for the Very Large Telescope UT4.
Instrumentation and Methods for Astrophysics
no code implementations • 12 Oct 2020 • Timothy D. Gebhard, Markus J. Bonse, Sascha P. Quanz, Bernhard Schölkopf
The detection of exoplanets in high-contrast imaging (HCI) data hinges on post-processing methods to remove spurious light from the host star.
no code implementations • 31 Dec 2019 • Tomas Stolker, Sascha P. Quanz, Kamen O. Todorov, Jonas Kühn, Paul Mollière, Michael R. Meyer, Thayne Currie, Sebastian Daemgen, Baptiste Lavie
The $L'$-NB4. 05 and $L'$-$M'$ colors of the studied sample are all red while the NB4. 05-$M'$ color is blue for $\beta$ Pic b, gray for PZ Tel B, and red for HIP 65426 b and HD 206893 B (although typically with low significance).
Earth and Planetary Astrophysics Solar and Stellar Astrophysics
no code implementations • 8 Nov 2018 • Tomas Stolker, Markus J. Bonse, Sascha P. Quanz, Adam Amara, Gabriele Cugno, Alexander J. Bohn, Anna Boehle
The architecture of PynPoint has been redesigned with the core functionalities decoupled from the pipeline modules.
Earth and Planetary Astrophysics Instrumentation and Methods for Astrophysics
1 code implementation • 14 Sep 2018 • Yann Alibert, Julia Venturini, Ravit Helled, Sareh Ataiee, Remo Burn, Luc Senecal, Willy Benz, Lucio Mayer, Christoph Mordasini, Sascha P. Quanz, Maria Schönbächler
The evidence that Jupiter slowed down its growth after reaching 20 Earth masses for at least 2 Myr is puzzling because a planet of this mass is expected to trigger fast runaway gas accretion.
Earth and Planetary Astrophysics