Skip banner and navigation tools.

School of Physics & Astronomy

US Site | Italian Site | UK site

Home > Einstein Probe follow up > EP#01709178975

EP_FIELD00047

EP

47

/EP

EP#01709178975: Swift observation summary

Data analysed so far:

• ObsID: 00019877001 with 0.6 ks exposure.

About tiled field analysis.

So far 1 fields have been scheduled for observations. Data are available and processed for 1 of these.

• 19877 — 594 s of cleaned data taken between 2025-06-17 11:56:38 and 2025-06-17 12:08:34

Details of afterglow candidates

1 sources were found which matches the afterglow criteria.

#	RA (J2000)	Dec (J2000)	Err901	Detection Flag2	Rank3	Dist from Einstein Probe/WXT pos	Exposure	Notes	Vizier
1 [details]	15h 44m 03.83s236.01594°	-33° 11′ 12.5″-33.18681°	2.7′′ *	Good	2 (O)	0.9′	594 s	Matches SIMBAD source: CD-32 11039B, 3.3″ away. Matches known X-ray source: XMMSL3 J154404.2-331108 (from XMM-NEWTON/XMMSLEWCLN), 2.9976548263649″ away.
Mean XRT rate: 1.08 (±0.06) ct s-1 Peak XRT rate: 1.49 (±0.24) ct s-1 -5.23 σ above the catalogued flux from XMM-NEWTON/XMMSLEWCLN. RASS PSPC 3-σ upper limit: 0.0×100 ct s-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 1.56 (±0.09) ct s-1 Peak XRT rate converted to PSPC: 2.1 (±0.3) ct s-1 Mean XRT flux: 3.14 (±0.19) ×10-11 erg cm-1s-1 Peak XRT flux: 4.3 (±0.7) ×10-11 erg cm-1s-1 Products: Light curve | Spectrum | Enhanced position

¹ Radius, 90% confidence.
² Indicates how likely the source is to be real. See the LSXPS documentation.
³ T=Transient Source, O=Outbursting known source, U=Uncatalogued X-ray source, K=Known X-ray source.
^* The position was enhanced using astrometry derived from the Swift UVOT.
^† The position was astrometrically corrected using the XRT sources and the 2MASS catalogue.

Find an upper limit.

Sources found so far

So far 2 sources have been found in the XRT data. 2 sources match catalogued sources.

#	RA (J2000)	Dec (J2000)	Err901	Detection Flag2	Rank3	Dist from Einstein Probe/WXT pos	Exposure	Notes	Vizier
1 [details]	15h 44m 03.83s236.01594°	-33° 11′ 12.5″-33.18681°	2.7′′ *	Good	2 (O)	0.9′	594 s	Matches SIMBAD source: CD-32 11039B, 3.3″ away. Matches known X-ray source: XMMSL3 J154404.2-331108 (from XMM-NEWTON/XMMSLEWCLN), 2.9976548263649″ away.
Mean XRT rate: 1.08 (±0.06) ct s-1 Peak XRT rate: 1.49 (±0.24) ct s-1 -5.23 σ above the catalogued flux from XMM-NEWTON/XMMSLEWCLN. RASS PSPC 3-σ upper limit: 0.0×100 ct s-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 1.56 (±0.09) ct s-1 Peak XRT rate converted to PSPC: 2.1 (±0.3) ct s-1 Mean XRT flux: 3.14 (±0.19) ×10-11 erg cm-1s-1 Peak XRT flux: 4.3 (±0.7) ×10-11 erg cm-1s-1 Products: Light curve | Spectrum | Enhanced position
2 [details]	15h 44m 17.04s236.07099°	-33° 10′ 13.8″-33.17049°	10.3′′	Poor	3 (U)	2.5′	594 s	Matches SIMBAD source: UCAC4 285-083088, 1.7″ away.
Mean XRT rate: 1.2 (+0.7, -0.5) ×10-2 ct s-1 Peak XRT rate: 1.2 (+0.7, -0.5) ×10-2 ct s-1 RASS PSPC 3-σ upper limit: 4.06 ct s-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 1.5 (+0.8, -0.6) ct s-1 Peak XRT rate converted to PSPC: 1.5 (+0.8, -0.6) ×10-4 ct s-1 Mean XRT flux: 1.6 (+0.9, -0.7) ×10-11 erg cm-1s-1 Peak XRT flux: 1.6 (+0.9, -0.7) ×10-11 erg cm-1s-1 Products: Light curve | Spectrum

¹ Radius, 90% confidence.
² Indicates how likely the source is to be real. See the LSXPS documentation.
³ T=Transient Source, O=Outbursting known source, U=Uncatalogued X-ray source, K=Known X-ray source.
^* The position was enhanced using astrometry derived from the Swift UVOT.
^† The position was astrometrically corrected using the XRT sources and the 2MASS catalogue.

Image

Select image style: Draggable PNG | JS9.

Magnify image and make scrollable?

FITS image.

---

Exposure map

Magnify exposure map and make scrollable?

FITS exposure map.