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Home > Einstein Probe follow up > EP#01709178069

EP_FIELD00043

EP

43

/EP

EP#01709178069: Swift observation summary

Data analysed so far:

• ObsID: 00019857001 with 2.2 ks exposure.

About tiled field analysis.

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

• 19857 — 2.2 ks of cleaned data taken between 2025-06-07 00:24:37 and 2025-06-07 02:06:07

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]	13h 59m 09.96s209.79149°	-49° 14′ 05.6″-49.23488°	2.5′′ *	Good	2 (O)	2.9′	2.2 ks	Matches SIMBAD source: UCAC4 204-077663, 3.4″ away. Matches known X-ray source: 2RXP J135909.9-491403 (from ROSAT/ROSPSPC), 4.1611439116535″ away.
Mean XRT rate: 0.70 (±0.04) ct s-1 Peak XRT rate: 1.19 (±0.27) ct s-1 -4.36 σ above the catalogued flux from ROSAT/ROSPSPC. RASS PSPC 3-σ upper limit: 0.0×100 ct s-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 1.02 (±0.05) ct s-1 Peak XRT rate converted to PSPC: 1.7 (±0.4) ct s-1 Mean XRT flux: 2.01 (±0.10) ×10-11 erg cm-1s-1 Peak XRT flux: 3.4 (±0.8) ×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 1 sources have been found in the XRT data. 1 sources match catalogued sources.

#	RA (J2000)	Dec (J2000)	Err901	Detection Flag2	Rank3	Dist from Einstein Probe/WXT pos	Exposure	Notes	Vizier
1 [details]	13h 59m 09.96s209.79149°	-49° 14′ 05.6″-49.23488°	2.5′′ *	Good	2 (O)	2.9′	2.2 ks	Matches SIMBAD source: UCAC4 204-077663, 3.4″ away. Matches known X-ray source: 2RXP J135909.9-491403 (from ROSAT/ROSPSPC), 4.1611439116535″ away.
Mean XRT rate: 0.70 (±0.04) ct s-1 Peak XRT rate: 1.19 (±0.27) ct s-1 -4.36 σ above the catalogued flux from ROSAT/ROSPSPC. RASS PSPC 3-σ upper limit: 0.0×100 ct s-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 1.02 (±0.05) ct s-1 Peak XRT rate converted to PSPC: 1.7 (±0.4) ct s-1 Mean XRT flux: 2.01 (±0.10) ×10-11 erg cm-1s-1 Peak XRT flux: 3.4 (±0.8) ×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.

Image

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FITS image.

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Exposure map

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FITS exposure map.