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Einstein Probe trigger EP250321a
Source 9 (SWIFT J115625.5+173158)

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):11h 56m 25.56s (= 179.10651°)
Dec (J2000):+17° 31′ 58.8″ (= +17.5330°)
Error (radius, 90%):5.2″
Detection flag:Good
XRT exposure:2.8 ks (vignetting corrected)
Peak rate:5.8 (+2.5, -2.0) ×10-3 ct s-1
Peak flux:2.50 (+1.08, -0.85) ×10-13 erg cm-2 s-1
Mean rate:5.8 (+2.5, -2.0) ×10-3 ct s-1
Mean flux:2.50 (+1.08, -0.85) ×10-13 erg cm-2 s-1
Has spectral fit?Yes
NH 3.94 × 1020 cm-2
Γ 1.60
Database ID:343
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 limit0.012 ct s-1
Obs rate/LSXPS UL≤0 σ
Rass upper limit20.025 ct s-1
Obs rate/Rass UL≤0 σ
Fading? ≤3-σ signifance.
Near 2MASS source? No
Near SIMBAD source?Yes - LAMOST J115625.40+173157.26 is 2.8″ away.
High proper motion star?No.
Catalogue SearchCone search radius 15″ 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.