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Einstein Probe trigger EP250109a / GRB 250109A
Source 1 (SWIFT J055507.8-122158)

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):05h 55m 07.86s (= 88.78275°)
Dec (J2000):-12° 21′ 58.6″ (= -12.3663°)
Error (radius, 90%):6.8″
Detection flag:Good
XRT exposure:4.1 ks (vignetting corrected)
Peak rate:1.5 (+1.0, -0.7) ×10-3 ct s-1
Peak flux:6 (+4, -3) ×10-14 erg cm-2 s-1
Mean rate:1.5 (+1.0, -0.7) ×10-3 ct s-1
Mean flux:6 (+4, -3) ×10-14 erg cm-2 s-1
Has spectral fit?No
Database ID:261
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 limit20.015 ct s-1
Obs rate/Rass UL≤0 σ
Fading? ≤3-σ signifance.
Near 2MASS source? No
Near SIMBAD source?No.
High proper motion star?No.
Catalogue SearchCone search radius 20″ 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 assuming a generic AGN spectrum:NH=3×1020 cm-2, Γ=1.7