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Einstein Probe trigger EP#01709177873
Source 1 (SWIFT J155304.5+445746)

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):15h 53m 04.55s (= 238.26897°)
Dec (J2000):+44° 57′ 46.8″ (= +44.9630°)
Error (radius, 90%):2.5″ (enhanced position)
Detection flag:Good
XRT exposure:2.0 ks (vignetting corrected)
Peak rate:1.8 (±0.4) ct s-1
Peak flux:7.6 (±1.6) ×10-11 erg cm-2 s-1
Mean rate:1.04 (±0.03) ct s-1
Mean flux:4.47 (±0.15) ×10-11 erg cm-2 s-1
The source is fading with 2.8-σ significance
Has spectral fit?Yes
NH 1.05 × 1021 cm-2
Γ 2.04
Database ID:381
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 - XMMSL3 J155304.3+445748 in the XMM-NEWTON/XMMSLEWCLN catalogue.
Cat. rate1:0.56 (±0.25) ct s-1
Cat. flux2:4.9 (±2.2) ×10-12 erg cm-2 s-1
Observed/Cat. flux4.2 σ
Fading? ≤3-σ signifance.
Near 2MASS source? Yes, 1 match. Show details.
Near SIMBAD source?Yes - RX J1553.0+4457 is 3.1″ away.
High proper motion star?Yes. RX J1553.0+4457
Catalogue SearchCone search radius 7″ 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