tilepy: Smart Scheduling for Multi-Messenger Astronomy from Earth to Orbit

  • Halim Ashkar
  • , Monica Seglar-Arroyo
  • , Fabian Schussler
  • , Weizmann Kiendrébéogo
  • , Mathieu de Bony de Lavergne

Research output: Contribution to journalConference articlepeer-review

Abstract

The rise of direct detection of gravitational waves (GWs) started a new era in multi-messenger astrophysics. Like GWs, many other astrophysical transient sources suffer from poor localization, which can span tens to thousands of square degrees in the sky. Moreover, as the detection horizon for these transients widens and the detection rate increases, current electromagnetic follow-up facilities require tools to optimize the follow-up of poorly localized events and save valuable telescope time for their time-domain astrophysics programs. We present tilepy, a Python library, and a tool to optimize the follow-up of poorly localized transient events. tilepy is used for GWs as well as other poorly localized events such as gamma-ray bursts detected by Fermi-GBM and neutrino candidates from IceCube. tilepy has also been optimized to integrate smoothly with multiple ground-based observatories operating individually or simultaneously with diverse observational configurations. In this contribution, we introduce the latest developments from tilepy, mainly the ability to operate with space-based observatories while taking into consideration factors such as Earth, Sun, and Moon occultation and South Atlantic Anomaly passage. We present innovations to the platform, handling a variety of field of view shapes, the possibility of optimizing observation scheduling with artificial intelligence tools and examples of its use on transient astrophysical events.

Original languageEnglish
Article number914
JournalProceedings of Science
Volume501
DOIs
Publication statusPublished - 30 Dec 2025
Externally publishedYes
Event39th International Cosmic Ray Conference, ICRC 2025 - Geneva, Switzerland
Duration: 15 Jul 202524 Jul 2025

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