From c8cef80f46f13a57f249e30c90b176a2f388851f Mon Sep 17 00:00:00 2001 From: Laurent MICHEL Date: Wed, 13 Nov 2024 21:49:14 +0100 Subject: [PATCH] svom sectoion updated --- VOHE-Note.tex | 46 +++++++++++++++++++++++++++------------------- 1 file changed, 27 insertions(+), 19 deletions(-) diff --git a/VOHE-Note.tex b/VOHE-Note.tex index 2e1ed33..f8a877c 100644 --- a/VOHE-Note.tex +++ b/VOHE-Note.tex @@ -355,26 +355,34 @@ \subsubsection{SVOM} is a Sino-French mission dedicated to the study of the transient \gls{HE} sky, and in particular to the detection, localisation and study of Gamma Ray Bursts (GRBs). -Gamma-ray bursts are sudden, intense flashes of X-ray and gamma-ray light. -They are associated with the cataclysmic formation of black holes, either by the merger of two compact stars -(neutron star or black hole) or by the sudden explosion of a massive star, twenty to one hundred times the mass of our Sun. -The birth of a black hole is accompanied by the ejection of jets of matter that reach speeds close to the speed of light. -These jets of matter then decelerate in the circumstellar medium, sweeping away everything in their path. -Gamma-ray bursts can be observed at the very edge of the universe, acting as lighthouses that illuminate -the dark ages of its creation. Although they have been studied extensively over the past fifteen years, -gamma-ray bursts are still poorly understood phenomena. To better understand them, China and France have decided -to join forces with the \gls{SVOM} satellite, which is specifically dedicated to the study of gamma-ray bursts. - The special feature of the \gls{SVOM} mission is that it combines ground-based and space-based observations, -providing a spectral bandwidth from the visible to the \gls{HE} range. By guaranteeing multi-wavelength -observations of about one hundred bursts of all types per year, the \gls{SVOM} mission will make a unique contribution -to two of the most fruitful areas of research in recent decades: the use of bursts in cosmology and the understanding -of the phenomenon. Looking further ahead, the \gls{SVOM} mission will work in close synergy with a new generation of -instruments dedicated to the search for neutrinos and gravitational waves of cosmic origin, in order to confirm -the astrophysical origin of the signals detected by these future instruments. - -\gls{SVOM} has been successfully launched on June 22 2024 from Xichang lauchpad. - +providing a spectral bandwidth from the visible to the \gls{HE} range. + +The \gls{SVOM} spacecraft carries four multi-wavelength instruments: ECLAIRs(4-250keV), +GRM (15-5000 keV), MXT (0.3 - 10 keV) and VT (optical Blue and Red broadband filters). +ECLAIRs and GRM can detect gamma-ray transient sources in real-time with localisation +capabilities for ECLAIRs. An autonomous slew of the platform can be requested (only by +ECLAIRs) to perform X-ray and optical follow-up of the source with the smaller field +of view instruments: MXT and VT. +\gls{SVOM} also transfers alerts data of potential GRBs detection in near real-time to the ground +with a typical latency of less than 30 seconds. +The most valuable information (e.g. localisation, SNR, energy range and more) are then +automatically shared to the world-wide community within the form of Notices. +They will be broadcasted to the worldwide community using the NASA's General Coordinates +Network (GCN) system both in VOEvent and in JSON format. Public access to +the dedicated Kafka streams are planned to be opened at the beginning of 2025. + +All data related to GRB detections will be public and can be +retrieved through the \gls{SVOM} portal (not deployed at the time of writing). +All these science products, in FITS format, do conform to a global data model based on JSON descriptors. +Pipeline modules are able to extend the data products they deliver with a list of +keywords that carry most of the Obscore quantities. This feature will facilitate +their publication in ObsTAP services. + +\gls{SVOM} has been successfully launched on June 22 2024 from Xichang lauchpad. +As early as the commissionning phase, it has detected numerous +interesting GRBs and triggered follow-up campaigns with very different facilities such +as SWIFT, Einstein Probe or even the VLT. \subsection{KM3Net and neutrino detection}