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Einstein Probe trigger EP250812a
Source 4 (SWIFT J020404.7-091504)

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: 4: Known X-ray Source
RA (J2000):02h 04m 04.78s (= 31.01990°)
Dec (J2000):-09° 15′ 04.8″ (= -9.2513°)
Error (radius, 90%):5.8″
Detection flag:Good
XRT exposure:2.0 ks (vignetting corrected)
Peak rate:6.3 (+2.5, -2.0) ×10-3 ct s-1
Peak flux:2.72 (+1.09, -0.87) ×10-13 erg cm-2 s-1
Mean rate:6.3 (+2.5, -2.0) ×10-3 ct s-1
Mean flux:2.72 (+1.09, -0.87) ×10-13 erg cm-2 s-1
Has spectral fit?Yes
NH 2.48 × 1020 cm-2
Γ 1.72
Database ID:428
Things to check:
Optical Loading: No warning (automatic)
Stray Light: No warning (automatic)
Extended Emission: No warning (automatic)
Catalogue information
Known X-ray emitter?Yes - LSXPS J020405.1-091509
Cat. rate1:5.6 (±1.5) ×10-3 ct s-1
Cat. flux2:2.0 (±0.5) ×10-13 erg cm-2 s-1
Observed/Cat. flux0.3 σ
Fading? ≤3-σ signifance.
Near 2MASS source? No
Near SIMBAD source?No.
High proper motion star?No.
Catalogue SearchCone search radius 17″ 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.