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Einstein Probe trigger EP250812a
Source 1 (SWIFT J020358.1-091907)

Image of the XRT detection

This source is detected in 1 block. Show all images.

Image of the LC

Spectrum

Image of the spectrum
Source details
Rank/Classification: 1: Transient source
RA (J2000):02h 03m 58.10s (= 30.99209°)
Dec (J2000):-09° 19′ 07.5″ (= -9.3187°)
Error (radius, 90%):3.7″
Detection flag:Good
XRT exposure:2.0 ks (vignetting corrected)
Peak rate:0.21 (±0.05) ct s-1
Peak flux:8.9 (±2.0) ×10-12 erg cm-2 s-1
Mean rate:0.101 (±0.008) ct s-1
Mean flux:4.3 (±0.3) ×10-12 erg cm-2 s-1
The source is fading with 3.1-σ significance
Has spectral fit?Yes
NH 6.19 × 1020 cm-2
Γ 1.90
Database ID:425
Things to check:
Optical Loading: No warning (automatic)
Stray Light: No warning (automatic)
Extended Emission: No warning (automatic)
Catalogue information
Known X-ray emitter?No. Get XMM upper limit
LSXPS upper limit1.5×10-3 ct s-1
Obs rate/LSXPS UL4.4 σ
Rass upper limit20.023 ct s-1
Obs rate/Rass UL3.9 σ
Fading? Yes (3.1-σ difference between at least one detection and a later detection or upper limit).
Near 2MASS source? No
Near SIMBAD source?No.
High proper motion star?No.
Catalogue SearchCone search radius 11″ Vizier | Simbad | NED | X-ray master | LSXPS | 3XMM-DR5

Notes
All XRT count rates and fluxes are 0.3—10 keV
1Catalogued count-rates have been converted to XRT equivalents.
2Catalogued upper limits and fluxes have been converted to the XRT equivalent using the automatic power-law spectral fit described above.