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Einstein Probe trigger EP241217a
Source 4 (SWIFT J030807.9+310326)

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: 3: Uncatalogued X-ray source
RA (J2000):03h 08m 07.98s (= 47.03323°)
Dec (J2000):+31° 03′ 26.4″ (= +31.0573°)
Error (radius, 90%):8.3″
Detection flag:Poor
XRT exposure:5.4 ks (vignetting corrected)
Peak rate:3.3 (+1.3, -1.1) ×10-3 ct s-1
Peak flux:1.4 (+0.6, -0.5) ×10-13 erg cm-2 s-1
Mean rate:3.3 (+1.3, -1.1) ×10-3 ct s-1
Mean flux:1.4 (+0.6, -0.5) ×10-13 erg cm-2 s-1
Has spectral fit?Yes
NH 1.21 × 1022 cm-2
Γ 2.08
Database ID:250
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 limit20.079 ct s-1
Obs rate/Rass UL≤0 σ
Fading? ≤3-σ signifance.
Near 2MASS source? Yes, 1 match. Show details.
Near SIMBAD source?No.
High proper motion star?No.
Catalogue SearchCone search radius 24″ 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.

2MASS objects near the source

ID Position Offset from
XRT source		 J H K