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Einstein Probe trigger GRB 251023B
Source 1 (SWIFT J045400.4+123929)

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: 1: Transient source
RA (J2000):04h 54m 00.52s (= 73.50216°)
Dec (J2000):+12° 39′ 28.9″ (= +12.6580°)
Error (radius, 90%):2.8″ (enhanced position)
Detection flag:Good
XRT exposure:1767 s (vignetting corrected)
Peak rate:0.22 (±0.05) ct s-1
Peak flux:9.5 (±2.1) ×10-12 erg cm-2 s-1
Mean rate:0.138 (±0.010) ct s-1
Mean flux:5.9 (±0.4) ×10-12 erg cm-2 s-1
The source is fading with 3.4-σ significance
Has spectral fit?Yes
NH 3.24 × 1021 cm-2
Γ 1.97
Database ID:490
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 limit20.025 ct s-1
Obs rate/Rass UL3.9 σ
Fading? Yes (3.4-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 8″ 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.