GRB 251002A: Swift observation summary

This is a confirmed GRB (GRB 251002A), the afterglow is source 1 -- please see the GRB results at https://www.swift.ac.uk/xrt_products/03000125 for updated analysis

Mission:	SVOM/ECLAIRs
SVOM RA:	13.906°
SVOM Dec:	-5.544°
SVOM Err:	4.0 arcmin
T0:	2025-10-02 20:14:49 UT
Galactic:	125.76° -68.39°
Galactic N_H:	4.63× 10²⁰ cm^-2

Sun distance:	169.35°
Sun angle:	11.66 [hr](West of Sun)
Moon distance:	57.77°
Visibility of this field.
First slew:	2025-10-02 21:11:47 UT
First observation:	2025-10-02 21:11:17 UT
First analysis:	2025-10-03 01:56:45 UT

Data analysed so far:

ObsID: 03000125001 with 1.5 ks exposure.

About tiled field analysis.

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

3000125 — 1.5 ks of cleaned data taken between 2025-10-02 21:11:46 and 2025-10-02 22:48:39

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
1 [details]	00h 55m 37.95s13.90813°	-05° 34′ 00.4″-5.56678°	2.6′′ ^*	Good	1 (T)	1.4′	1.5 ks	The source is 4.3-σ above the RASS limit.
Mean XRT rate: 0.561 (±0.028) ct s^-1 Peak XRT rate: 1.7 (±0.4) ct s^-1 RASS PSPC 3-σ upper limit: 0.05 ct s^-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 0.66 (±0.03) ct s^-1 Peak XRT rate converted to PSPC: 2.0 (±0.5) ct s^-1 Mean XRT flux: 2.37 (±0.12) ×10^-11 erg cm^-1s^-1 Peak XRT flux: 7.3 (±1.6) ×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 3 sources have been found in the XRT data. 1 sources match catalogued sources.

#	RA (J2000)	Dec (J2000)	Err₉₀¹	Detection Flag²	Rank³	Dist from SVOM/ECLAIRs pos	Exposure	Notes
1 [details]	00h 55m 37.95s13.90813°	-05° 34′ 00.4″-5.56678°	2.6′′ ^*	Good	1 (T)	1.4′	1.5 ks	The source is 4.3-σ above the RASS limit.
Mean XRT rate: 0.561 (±0.028) ct s^-1 Peak XRT rate: 1.7 (±0.4) ct s^-1 RASS PSPC 3-σ upper limit: 0.05 ct s^-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 0.66 (±0.03) ct s^-1 Peak XRT rate converted to PSPC: 2.0 (±0.5) ct s^-1 Mean XRT flux: 2.37 (±0.12) ×10^-11 erg cm^-1s^-1 Peak XRT flux: 7.3 (±1.6) ×10^-11 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position
2 [details]	00h 55m 55.45s13.98103°	-05° 34′ 18.9″-5.57193°	3.5′′ ^*	Good	3 (U)	4.8′	1.5 ks
Mean XRT rate: 2.2 (±0.5) ×10^-2 ct s^-1 Peak XRT rate: 2.2 (±0.5) ×10^-2 ct s^-1 RASS PSPC 3-σ upper limit: 0.02 ct s^-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 0.036 (±0.008) ct s^-1 Peak XRT rate converted to PSPC: 0.036 (±0.008) ×10^-2 ct s^-1 Mean XRT flux: 5.9 (±1.3) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 5.9 (±1.3) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position
3 [details]	00h 55m 39.53s13.91471°	-05° 42′ 22.6″-5.70628°	8.4′′	Poor	3 (U)	9.8′	1.5 ks	Matches SIMBAD source: Gaia DR2 2524709289874260096, 1.6″ away.
Mean XRT rate: 4.6 (+2.9, -2.1) ×10^-3 ct s^-1 Peak XRT rate: 4.6 (+2.9, -2.1) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.02 ct s^-1 (PSPC count-rate) Products: Light curve \| Spectrum

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FITS exposure map.