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Home > SVOM follow up > sb25091517

SVOM_FIELD00038

SVOM

38

/SVOM

sb25091517: Swift observation summary

Data analysed so far:

• ObsID: 03000094001 with 0.7 ks exposure.

About tiled field analysis.

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

• 3000094 — 666 s of cleaned data taken between 2025-09-15 23:46:32 and 2025-09-15 23:58:46

Details of afterglow candidates

1 sources were found which matches the afterglow criteria.

#	RA (J2000)	Dec (J2000)	Err901	Detection Flag2	Rank3	Dist from SVOM/ECLAIRs pos	Exposure	Notes	Vizier
5 [details]	01h 59m 48.06s29.95025°	-08° 50′ 01.0″-8.83362°	44.1′′	Good	2 (O)	12.0′	0 s	Matches SIMBAD source: DES J015947.24-085004.3, 12.5″ away. Matches known X-ray source: LSXPS J015949.1-084954 (from LSXPS), 17.3″ away.
Mean XRT rate: undetermined ct s-1 Peak XRT rate: undetermined ct s-1 -3.03 σ above the catalogued flux from LSXPS. RASS PSPC 3-σ upper limit: 0.0×100 ct s-1 (PSPC count-rate)

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

#	RA (J2000)	Dec (J2000)	Err901	Detection Flag2	Rank3	Dist from SVOM/ECLAIRs pos	Exposure	Notes	Vizier
1 [details]	02h 00m 12.88s30.05368°	-08° 40′ 55.2″-8.68201°	2.7′′ *	Good	4 (K)	6.9′	666 s	Matches SIMBAD source: 1RXS J020013.6-084106, 1.4″ away. Matches known X-ray source: LSXPS J020012.7-084051 (from LSXPS), 1.6″ away.
Mean XRT rate: 2.01 (±0.11) ct s-1 Peak XRT rate: 2.7 (±0.6) ct s-1 -1.46 σ above the catalogued flux from LSXPS. RASS PSPC 3-σ upper limit: 0.0×100 ct s-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 2.73 (±0.15) ct s-1 Peak XRT rate converted to PSPC: 3.7 (±0.8) ct s-1 Mean XRT flux: 6.3 (±0.3) ×10-11 erg cm-1s-1 Peak XRT flux: 8.5 (±1.9) ×10-11 erg cm-1s-1 Products: Light curve | Spectrum | Enhanced position
2 [details]	02h 00m 56.95s30.23731°	-08° 53′ 28.6″-8.89129°	7.6′′	Reasonable	3 (U)	9.8′	666 s
Mean XRT rate: 10 (+6, -4) ×10-3 ct s-1 Peak XRT rate: 10 (+6, -4) ×10-3 ct s-1 RASS PSPC 3-σ upper limit: 0.01 ct s-1 (PSPC count-rate) Products: Light curve | Spectrum
3 [details]	02h 00m 08.16s30.03398°	-08° 40′ 24.6″-8.67349°	5.8′′	Poor	3 (U)	8.1′	666 s	The source is 3.5-σ above the LSPXS limit. This source is extended or caused by diffuse emission.
Mean XRT rate: 5.2 (±1.1) ×10-2 ct s-1 Peak XRT rate: 5.2 (±1.1) ×10-2 ct s-1 RASS PSPC 3-σ upper limit: 0.17 ct s-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 0.067 (±0.014) ct s-1 Peak XRT rate converted to PSPC: 0.067 (±0.014) ×10-2 ct s-1 Mean XRT flux: 1.6 (±0.3) ×10-12 erg cm-1s-1 Peak XRT flux: 1.6 (±0.3) ×10-12 erg cm-1s-1 Products: Light curve | Spectrum
4 [details]	02h 00m 07.22s30.03006°	-08° 40′ 56.7″-8.68242°	6.9′′	Poor	3 (U)	8.0′	666 s	This source is extended or caused by diffuse emission.
Mean XRT rate: 3.8 (±0.9) ×10-2 ct s-1 Peak XRT rate: 3.8 (±0.9) ×10-2 ct s-1 RASS PSPC 3-σ upper limit: 0.14 ct s-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 0.056 (±0.014) ct s-1 Peak XRT rate converted to PSPC: 0.056 (±0.014) ×10-2 ct s-1 Mean XRT flux: 1.4 (±0.4) ×10-12 erg cm-1s-1 Peak XRT flux: 1.4 (±0.4) ×10-12 erg cm-1s-1 Products: Light curve | Spectrum
5 [details]	01h 59m 48.06s29.95025°	-08° 50′ 01.0″-8.83362°	44.1′′	Good	2 (O)	12.0′	0 s	Matches SIMBAD source: DES J015947.24-085004.3, 12.5″ away. Matches known X-ray source: LSXPS J015949.1-084954 (from LSXPS), 17.3″ away.
Mean XRT rate: undetermined ct s-1 Peak XRT rate: undetermined ct s-1 -3.03 σ above the catalogued flux from LSXPS. RASS PSPC 3-σ upper limit: 0.0×100 ct s-1 (PSPC count-rate)

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.