The SVOM mission, its profile and its system

TL;DR

The SVOM mission is a French-Chinese space observatory launched in 2024, designed for multi-wavelength transient sky studies, especially gamma-ray bursts, with rapid response ground support and versatile observation programs.

Contribution

This paper introduces the SVOM mission's design, instruments, and scientific objectives, highlighting its capabilities for multi-messenger and time-domain astronomy.

Findings

Provides a homogeneous dataset of GRB prompt and afterglow emissions.

Enhances understanding of low luminosity and soft Gamma-Ray Burst populations.

Integrates space-based and ground-based systems for rapid transient follow-up.

Abstract

The SVOM (Space-based Variable Objects Monitor) mission, launched into low Earth orbit on 22 June 2024, is a French-Chinese multi-wavelength observatory dedicated to the study of the transient sky. Inspired by the Neil Gehrels Swift Observatory, it consists of an autonomous rapid-slewing satellite, linked in real time to several ground-based telescopes. The space segment comprises two X-ray/gamma-ray wide-field instruments (ECLAIRs and GRM) with real-time triggering capabilities combined with two narrow-field telescopes in X-ray (MXT) and in visible (VT). In addition, the SVOM collaboration has also developed a unique visible and NIR ground-based follow-up system to promptly respond to the gamma-ray transients detected on board. The core program of SVOM will provide new insights into the Gamma-Ray Burst physics by providing a homogeneous dataset covering both the prompt and afterglow emissions, as well as better studying the low luminosity and soft Gamma-Ray Burst populations. As a versatile satellite platform with fast slewing capabilities, SVOM also comprises a Target of Opportunity program and a General Program consisting in pointed observations scheduled over the year that will both significantly contribute to the multi-messenger and time-domain astronomy.