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SVOM Missionpage #2856

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59 changes: 59 additions & 0 deletions app/routes/missions.svom/logo_svom_black.svg
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67 changes: 67 additions & 0 deletions app/routes/missions.svom/route.mdx
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@@ -0,0 +1,67 @@
---
handle:
breadcrumb: SVOM
---

import logo from './logo_svom_black.svg'

# Space Variable Objects Monitor (SVOM)

<img
src={logo}
align="right"
width="818"
height="780"
alt="SVOM logo"
className="grid-col-6 mobile-lg:grid-col-4 tablet:grid-col-2 desktop:grid-col-3 height-auto"
/>

**Launch Date:** June 22, 2024

**Anticipated Start of Science Operations:** December 2024

**End of Operations:** Mission duration of 3 years

**Data Archive:**
[HEASARC SVOM Archive](https://heasarc.gsfc.nasa.gov/docs/heasarc/missions/svom.html)
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If this isn't or will not be a data archive, we should remove this section.


The [Space-based multi-band astronomical Variable Objects Monitor (SVOM)](https://www.svom.eu/en/the-svom-mission/) is a French-Chinese mission, result of a collaboration between the two national space agencies, [China National Space Administration (CNSA)](https://www.cnsa.gov.cn/english/index.html) and [Centre national d'études spatiales (CNES)](https://cnes.fr/en/projects/svom). SVOM mission is dedicated to the study of the the most powerful transient phenomena, with a particular emphasis on gamma-ray bursts (GRBs).

The SVOM spacecraft carries four multi-wavelength instruments: ECLAIRs, Gamma Ray burst Monitor (GRM), Microchannel X-ray Telescope (MXT) and Visual Telescope (VT). ECLAIRs and GRM can detect gamma-ray transient sources in real-time with localisation capabilities for ECLAIRs. SVOM can transfer the alerts in near real-time with a typical latency of less than 30s and perform autonomous slew to allow x-ray and optical follow-up of the source with the smaller field of view instruments: MXT and VT.

<div className="overflow-table">

| Instruments | Energy Range | Field of View | Localization |
| ----------- | ------------------------------------------------------ | ------------- | --------------------------------------------- |
| ECLAIRs | 4 - 250 keV | 2 ster | ~8ʹ radius (statistical, 90% confidence) |
| GRM | 15 - 5000 keV | 2.6 ster | ~1-10° radius (statistical, 90% confidence) |
| MXT | 0.2 - 10 keV | 1.1° x 1.1° | ~10-100ʺ radius (statistical, 90% confidence) |
| VT | 450 - 650 nm (Blue band) <br/>650 - 1000 nm (Red band) | 26ʹ x 26' | ~1ʺ radius (statistical, 90% confidence) |

</div>

#### JSON-Serialized GCN Notice Types in GCN Kafka
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We should not list this as JSON, instead make it clear that it's VOEvent XML-serialized GCN Notices.


SVOM distributes alerts and localizations of gamma-ray burst and other transients. For now, these notices are published only in VOEvent format through the GCN Kafka topics prfixed `gcn.notices.svom.voevent`. Support in the JSON format will be available as soon as possible.
As SVOM is at the beginning of its operationnal phase, only the first alerts from GRM, ECLAIRs and MXT are available, see table below:

<div className="overflow-table">

| kafka topic | Contents | Latency |
| ------------------------------------------------- | ----------------------------------------------------------------------------------------------- | --------------- |
| `gcn.notices.svom.voevent.grm` | GRM trigger with possible raw localization | ~10 sec |
| `gcn.notices.svom.voevent.eclairs.trigger.wakeup` | ECLAIRs localization of a potential burst, can be updated once with slew status of the platform | ~10 sec - 1 min |
| `gcn.notices.svom.voevent.mxt` | MXT localization of a found counterpart (only if platform slew), can be updated up to 3 times | ~5 min |

</div>

#### Yearly Trigger Rates

<div className="overflow-table">

| Instrument | Type | Yearly Rates |
| ---------- | -------------------------- | ------------ |
| ECLAIRs | GRBs, and other transients | 50 GRBs/yr |
| GRM | GRBs, and other transients | 90 GRBs/yr |

</div>
5 changes: 5 additions & 0 deletions app/routes/missions.tsx
Original file line number Diff line number Diff line change
@@ -82,6 +82,11 @@ export default function () {
<NavLink key="sksn" to="sksn">
Super-Kamiokande
</NavLink>,
useFeature('SVOM') && (
<NavLink key="svom" to="svom">
SVOM
</NavLink>
),
]}
/>
</div>