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Einstein Probe trigger EP241217a
Source 1 (SWIFT J030746.4+305547)

Image of the XRT detection

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

Image of the LC

Spectrum

Image of the spectrum

Enhanced position

Image of the UVOT image
Source details
Rank/Classification: 3: Uncatalogued X-ray source
RA (J2000):03h 07m 46.03s (= 46.94180°)
Dec (J2000):+30° 55′ 45.2″ (= +30.9292°)
Error (radius, 90%):3.6″ (enhanced position)
Detection flag:Good
XRT exposure:5.4 ks (vignetting corrected)
Peak rate:0.059 (±0.015) ct s-1
Peak flux:2.5 (±0.7) ×10-12 erg cm-2 s-1
Mean rate:0.037 (±0.006) ct s-1
Mean flux:1.60 (±0.25) ×10-12 erg cm-2 s-1
The source is fading with 3.2-σ significance
Has spectral fit?Yes
NH 1.88 × 1021 cm-2
Γ 1.83
Database ID:244
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
Rass upper limit20.026 ct s-1
Obs rate/Rass UL2.1 σ
Fading? Yes (3.2-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 10″ 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.