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Einstein Probe

Einstein Probe logo

Launch Date: January 9, 2024

End of Operations: Mission duration of 3 years (5 years as a goal)

The Einstein Probe (EP) is a mission of the Chinese Academy of Sciences (CAS), in collaboration with the European Space Agency (ESA) and the Max Planck Institute for extraterrestrial Physics (MPE), Germany, dedicated to time-domain high-energy astrophysics. Its primary goals are to discover high-energy transients and monitor variable objects. To achieve this, EP employs a very large instantaneous field-of-view (3600 square degrees), along with moderate spatial resolution (FWHM ~5 arcmin) and energy resolution in the 0.5-5 keV energy band. EP has also the capability of performing fast and deep follow-up observations in the 0.5-10 keV energy band (effective area 2*300 cm2 @ 1 keV; half-power diameter, HPD, ~30 arcsec), as well as of quick downlink of transient alert messages.

InstrumentsEnergy RangeField of ViewLocalization
Wide Field X-ray Telescope0.5 - 4 keV3600 deg22 arcmin
Follow-up X-ray Telescope0.5 – 10 keV60 arcmin diameter5-15 arcsec (90% c.l.)

JSON-Serialized GCN Notices Types in GCN Kafka:

TypeContentsLatency
gcn.notices.einstein_probe.wxt.alertLocalization, Count Rate, Significance~1 min

Yearly Trigger Rates:

InstrumentTypeRates
WXTGRBs, other transients, and non-astrophysical triggers~100
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