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Einstein Probe trigger GRB 250416C (EP250416a)
Source 1 (SWIFT J170540.5+254632)

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: 2: Outbursting source
RA (J2000):17h 05m 40.92s (= 256.42050°)
Dec (J2000):+25° 46′ 32.3″ (= +25.7756°)
Error (radius, 90%):4.0″ (enhanced position)
Detection flag:Good
XRT exposure:4.0 ks (vignetting corrected)
Peak rate:0.13 (±0.03) ct s-1
Peak flux:5.7 (±1.3) ×10-12 erg cm-2 s-1
Mean rate:0.059 (±0.005) ct s-1
Mean flux:2.55 (±0.22) ×10-12 erg cm-2 s-1
The source is fading with 2.8-σ significance
Has spectral fit?Yes
NH 2.03 × 1021 cm-2
Γ 2.00
Database ID:362
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 limit20.017 ct s-1
Obs rate/Rass UL3.9 σ
Fading? ≤3-σ signifance.
Near 2MASS source? No
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.