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Home > Einstein Probe follow up > EP#01709132140

EP_FIELD00022

EP

22

/EP

EP#01709132140: Swift observation summary

Data analysed so far:

• ObsID: 00019584001 with 1.7 ks exposure.

About tiled field analysis.

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

• 19584 — 1.7 ks of cleaned data taken between 2025-03-02 03:45:01 and 2025-03-02 04:16:40

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 03m 40.42s195.91841°	+24° 14′ 03.8″24.23440°	2.8′′ *	Good	2 (O)	0.7′	1.7 ks	The source is 3.6-σ above the RASS limit.
Mean XRT rate: 0.132 (±0.010) ct s-1 Peak XRT rate: 0.19 (±0.04) ct s-1 RASS PSPC 3-σ upper limit: 0.04 ct s-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 0.200 (±0.015) ct s-1 Peak XRT rate converted to PSPC: 0.29 (±0.07) ct s-1 Mean XRT flux: 3.54 (±0.27) ×10-12 erg cm-1s-1 Peak XRT flux: 5.1 (±1.2) ×10-12 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 6 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]	13h 03m 40.42s195.91841°	+24° 14′ 03.8″24.23440°	2.8′′ *	Good	2 (O)	0.7′	1.7 ks	The source is 3.6-σ above the RASS limit.
Mean XRT rate: 0.132 (±0.010) ct s-1 Peak XRT rate: 0.19 (±0.04) ct s-1 RASS PSPC 3-σ upper limit: 0.04 ct s-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 0.200 (±0.015) ct s-1 Peak XRT rate converted to PSPC: 0.29 (±0.07) ct s-1 Mean XRT flux: 3.54 (±0.27) ×10-12 erg cm-1s-1 Peak XRT flux: 5.1 (±1.2) ×10-12 erg cm-1s-1 Products: Light curve | Spectrum | Enhanced position
2 [details]	13h 02m 55.46s195.73110°	+24° 12′ 11.6″24.20322°	4.2′′ *	Good	3 (U)	11.1′	1.7 ks	Matches SIMBAD source: [VV2006] J130255.4+241210, 2.3″ away.
Mean XRT rate: 1.7 (±0.4) ×10-2 ct s-1 Peak XRT rate: 1.7 (±0.4) ×10-2 ct s-1 RASS PSPC 3-σ upper limit: 0.11 ct s-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 0.023 (±0.006) ct s-1 Peak XRT rate converted to PSPC: 0.023 (±0.006) ×10-2 ct s-1 Mean XRT flux: 5.8 (±1.4) ×10-13 erg cm-1s-1 Peak XRT flux: 5.8 (±1.4) ×10-13 erg cm-1s-1 Products: Light curve | Spectrum | Enhanced position
3 [details]	13h 04m 02.23s196.00931°	+24° 16′ 40.0″24.27779°	4.5′′ *	Good	3 (U)	5.0′	1.7 ks
Mean XRT rate: 1.2 (±0.3) ×10-2 ct s-1 Peak XRT rate: 1.2 (±0.3) ×10-2 ct s-1 RASS PSPC 3-σ upper limit: 0.03 ct s-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 0.059 (±0.016) ct s-1 Peak XRT rate converted to PSPC: 0.059 (±0.016) ×10-2 ct s-1 Mean XRT flux: 3.2 (±0.8) ×10-13 erg cm-1s-1 Peak XRT flux: 3.2 (±0.8) ×10-13 erg cm-1s-1 Products: Light curve | Spectrum | Enhanced position
4 [details]	13h 03m 35.28s195.89702°	+24° 21′ 25.6″24.35710°	4.5′′ *	Good	3 (U)	7.6′	1.7 ks	Matches SIMBAD source: [VV2006] J130335.6+242126, 5.1″ away.
Mean XRT rate: 9.0 (+3.2, -2.6) ×10-3 ct s-1 Peak XRT rate: 9.0 (+3.2, -2.6) ×10-3 ct s-1 RASS PSPC 3-σ upper limit: 0.14 ct s-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 10.0 (+3.5, -2.9) ×10-3 ct s-1 Peak XRT rate converted to PSPC: 10.0 (+3.5, -2.9) ×10-3 ct s-1 Mean XRT flux: 3.9 (+1.4, -1.1) ×10-13 erg cm-1s-1 Peak XRT flux: 3.9 (+1.4, -1.1) ×10-13 erg cm-1s-1 Products: Light curve | Spectrum | Enhanced position
5 [details]	13h 03m 36.27s195.90111°	+24° 16′ 20.6″24.27240°	5.1′′ *	Good	3 (U)	2.8′	1.7 ks
Mean XRT rate: 7.7 (+2.9, -2.3) ×10-3 ct s-1 Peak XRT rate: 7.7 (+2.9, -2.3) ×10-3 ct s-1 RASS PSPC 3-σ upper limit: 0.10 ct s-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 5.3 (+2.0, -1.6) ×10-3 ct s-1 Peak XRT rate converted to PSPC: 5.3 (+2.0, -1.6) ×10-3 ct s-1 Mean XRT flux: 7.6 (+2.8, -2.3) ×10-13 erg cm-1s-1 Peak XRT flux: 7.6 (+2.8, -2.3) ×10-13 erg cm-1s-1 Products: Light curve | Spectrum | Enhanced position
6 [details]	13h 03m 32.42s195.88509°	+24° 17′ 40.2″24.29451°	8.1′′	Good	3 (U)	4.4′	1.7 ks
Mean XRT rate: 4.9 (+2.4, -1.9) ×10-3 ct s-1 Peak XRT rate: 4.9 (+2.4, -1.9) ×10-3 ct s-1 RASS PSPC 3-σ upper limit: 0.03 ct s-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 7.5 (+3.8, -2.9) ×10-3 ct s-1 Peak XRT rate converted to PSPC: 7.5 (+3.8, -2.9) ×10-3 ct s-1 Mean XRT flux: 2.38 (+1.20, -0.91) ×10-13 erg cm-1s-1 Peak XRT flux: 2.38 (+1.20, -0.91) ×10-13 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

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Exposure map

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FITS exposure map.