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Einstein Probe trigger EP250321a
Source 6 (SWIFT J115627.4+171644)

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):11h 56m 27.24s (= 179.11348°)
Dec (J2000):+17° 16′ 46.4″ (= +17.2796°)
Error (radius, 90%):4.1″ (enhanced position)
Detection flag:Reasonable
XRT exposure:10.3 ks (vignetting corrected)
Peak rate:7.1 (±1.9) ×10-3 ct s-1
Peak flux:3.1 (±0.8) ×10-13 erg cm-2 s-1
Mean rate:7.1 (±1.9) ×10-3 ct s-1
Mean flux:3.1 (±0.8) ×10-13 erg cm-2 s-1
Has spectral fit?Yes
NH 7.44 × 1021 cm-2
Γ 5.05
Database ID:340
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 limit3.9×10-3 ct s-1
Obs rate/LSXPS UL1.7 σ
Rass upper limit20.022 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 12″ 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