cosmICweb: Cosmological Initial Conditions for Zoom-in Simulations in the Cloud

Buehlmann, Michael; Winkler, Lukas; Hahn, Oliver; Helly, John C.; Jenkins, Adrian

Abstract

We present the online service cosmICweb (COSMological Initial Conditions on the WEB)—the first database and web interface to store, analyze, and disseminate initial conditions (ICs) for zoom simulations of objects forming in cosmological simulations: from galaxy clusters to galaxies and more. Specifically, we store compressed information about the Lagrangian proto-halo patches for all objects in a typical simulation merger tree along with properties of the halo/galaxy across cosmic time. This enables a convenient web-based selection of the desired zoom region for an object fitting
user-specified selection criteria. The information about the region can then be used with the music code to generate the zoom ICs for the simulation. In addition to some other simulations, we currently
support all objects in the Eagle simulation database, so that for example the Auriga simulations are easily reproduced, which we demonstrate explicitly. The framework is easily extensible to include
other simulations through an API that can be added to an existing database structure and with which cosmICweb can then be interfaced. We make the web portal and database publicly available to the community.

Citation

Buehlmann, M., Winkler, L., Hahn, O., Helly, J. C., & Jenkins, A. (online). cosmICweb: Cosmological Initial Conditions for Zoom-in Simulations in the Cloud. Open Journal of Astrophysics, https://doi.org/10.33232/001c.133696

• Journal Article Type: Article
• Acceptance Date: Mar 27, 2025
• Online Publication Date: Mar 28, 2025
• Deposit Date: Jul 15, 2025
• Publicly Available Date: Jul 15, 2025
• Journal: Open Journal of Astrophysics
• Electronic ISSN: 2565-6120
• Peer Reviewed: Peer Reviewed
• DOI: https://doi.org/10.33232/001c.133696
• Public URL: https://durham-repository.worktribe.com/output/4267614