Zobrazeno 1 - 10
of 37 326
pro vyhledávání: '"Schaller AS"'
Autor:
Ondaro-Mallea, Lurdes, Angulo, Raul E., Aricò, Giovanni, Schaye, Joop, McCarthy, Ian G., Schaller, Matthieu
Most of the visible matter in the Universe is in a gaseous state, subject to hydrodynamic forces and galaxy formation processes that are much more complex to model than gravity. These baryonic effects can potentially bias the analyses of several cosm
Externí odkaz:
http://arxiv.org/abs/2412.09526
Autor:
Zennaro, Matteo, Aricò, Giovanni, García-García, Carlos, Angulo, Raúl E., Ondaro-Mallea, Lurdes, Contreras, Sergio, Nicola, Andrina, Schaller, Matthieu, Schaye, Joop
Galaxy clustering and galaxy-galaxy lensing are two of the main observational probes in Stage-IV large-scale structure surveys. Unfortunately, the complicated relationship between galaxies and matter limits the exploitation of this data. Galaxy bias
Externí odkaz:
http://arxiv.org/abs/2412.08623
Data-driven techniques for analysis, modeling, and control of complex dynamical systems are on the uptake. Koopman theory provides the theoretical foundation for the extremely popular kernel extended dynamic mode decomposition (kEDMD). In this work w
Externí odkaz:
http://arxiv.org/abs/2412.02811
Autor:
Broxterman, Jeger C., Schaller, Matthieu, Hoekstra, Henk, Schaye, Joop, McGibbon, Robert J., Moreno, Victor J. Forouhar, Kugel, Roi, Elbers, Willem
Weak gravitational lensing (WL) convergence peaks contain valuable cosmological information in the regime of non-linear collapse. Using the FLAMINGO suite of cosmological hydrodynamical simulations, we study the physical origin and redshift distribut
Externí odkaz:
http://arxiv.org/abs/2412.02736
In this paper, we provide a tutorial overview and an extension of a recently developed framework for data-driven control of unknown nonlinear systems with rigorous closed-loop guarantees. The proposed approach relies on the Koopman operator represent
Externí odkaz:
http://arxiv.org/abs/2411.10359
Understanding the scaling relation between baryonic observables and dark matter halo properties is crucial not only for studying galaxy formation and evolution, but also for deriving accurate cosmological constraints from galaxy surveys. In this pape
Externí odkaz:
http://arxiv.org/abs/2411.03152
Autor:
Harder, Hans, Nüske, Feliks, Philipp, Friedrich M., Schaller, Manuel, Worthmann, Karl, Peitz, Sebastian
This paper explores the integration of symmetries into the Koopman-operator framework for the analysis and efficient learning of equivariant dynamical systems using a group-convolutional approach. Approximating the Koopman operator by finite-dimensio
Externí odkaz:
http://arxiv.org/abs/2411.00905
Autor:
Cerf, Sacha, Dayan, Benjamin, De Ambroggio, Umberto, Kaufmann, Marc, Lengler, Johannes, Schaller, Ulysse
To find a shortest path between two nodes $s_0$ and $s_1$ in a given graph, a classical approach is to start a Breadth-First Search (BFS) from $s_0$ and run it until the search discovers $s_1$. Alternatively, one can start two Breadth-First Searches,
Externí odkaz:
http://arxiv.org/abs/2410.22186
Autor:
McCarthy, Ian G., Amon, Alexandra, Schaye, Joop, Schaan, Emmanuel, Angulo, Raul E., Salcido, Jaime, Schaller, Matthieu, Bigwood, Leah, Elbers, Willem, Kugel, Roi, Helly, John C., Moreno, Victor J. Forouhar, Frenk, Carlos S., McGibbon, Robert J., Ondaro-Mallea, Lurdes, van Daalen, Marcel P.
Energetic feedback processes associated with accreting supermassive black holes can expel gas from massive haloes and significantly alter various measures of clustering on ~Mpc scales, potentially biasing the values of cosmological parameters inferre
Externí odkaz:
http://arxiv.org/abs/2410.19905
We investigate the existence of solutions of reversible and irreversible port-Hamiltonian systems. To this end, we utilize the associated exergy, a function that is composed of the system's Hamiltonian and entropy, to prove global existence in time f
Externí odkaz:
http://arxiv.org/abs/2410.18888