Skip banner and navigation tools.

 |  site map

Einstein Probe trigger EP250421a
Source 1 (SWIFT J112940.8-244031)

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):11h 29m 40.80s (= 172.42000°)
Dec (J2000):-24° 40′ 32.4″ (= -24.6757°)
Error (radius, 90%):2.7″ (enhanced position)
Detection flag:Good
XRT exposure:1772 s (vignetting corrected)
Peak rate:0.39 (±0.09) ct s-1
Peak flux:1.7 (±0.4) ×10-11 erg cm-2 s-1
Mean rate:0.272 (±0.017) ct s-1
Mean flux:1.17 (±0.07) ×10-11 erg cm-2 s-1
The source is fading with 2.8-σ significance
Has spectral fit?Yes
NH 3.20 × 1021 cm-2
Γ 2.00
Database ID:365
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 limit20.043 ct s-1
Obs rate/Rass UL4.0 σ
Fading? ≤3-σ signifance.
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.