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Einstein Probe trigger EP250901a
Source 1 (SWIFT J181210.9+184216)

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: 4: Known X-ray Source
RA (J2000):18h 12m 10.86s (= 273.04527°)
Dec (J2000):+18° 42′ 17.2″ (= +18.7048°)
Error (radius, 90%):5.0″ (enhanced position)
Detection flag:Good
XRT exposure:1993 s (vignetting corrected)
Peak rate:0.061 (±0.015) ct s-1
Peak flux:2.6 (±0.6) ×10-12 erg cm-2 s-1
Mean rate:0.057 (±0.010) ct s-1
Mean flux:2.5 (±0.4) ×10-12 erg cm-2 s-1
Has spectral fit?Yes
NH 4.95 × 1021 cm-2
Γ 2.27
Database ID:461
Things to check:
Optical Loading: No warning (automatic)
Stray Light: No warning (automatic)
Extended Emission: No warning (automatic)
Catalogue information
Known X-ray emitter?Yes - 1RXS J181210.7+184228 in the ROSAT/RASSFSC catalogue.
Cat. rate1:0.020 (±0.009) ct s-1
Cat. flux2:6.7 (±2.8) ×10-13 erg cm-2 s-1
Observed/Cat. flux2.5 σ
Fading? ≤3-σ signifance.
Near 2MASS source? Yes, 3 matches. Show details.
Near SIMBAD source?Yes - 1RXS J181210.7+184228 is 12.4″ 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.

2MASS objects near the source

ID Position Offset from
XRT source		 J H K