GRB 251106A: Swift observation summary

This is a confirmed GRB (GRB 251106A), the afterglow is source 1 -- please see the GRB results at https://www.swift.ac.uk/xrt_products/03000182 for updated analysis

Mission:	SVOM/ECLAIRs
SVOM RA:	234.756°
SVOM Dec:	+63.365°
SVOM Err:	9.3 arcmin
T0:	2025-11-06 19:56:21 UT
Galactic:	97.98° +44.80°
Galactic N_H:	1.57× 10²⁰ cm^-2

Sun distance:	80.13°
Sun angle:	0.84 [hr] (East of Sun)
Moon distance:	91.05°
Visibility of this field.
First slew:	2025-11-06 21:01:43 UT
First observation:	2025-11-06 21:01:14 UT
First analysis:	2025-11-06 23:31:34 UT

Data analysed so far:

ObsID: 03000182001 with 2.0 ks exposure.

About tiled field analysis.

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

3000182 — 2.0 ks of cleaned data taken between 2025-11-06 21:01:42 and 2025-11-06 22:40:37

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]	15h 37m 51.02s234.46260°	+63° 22′ 04.0″63.36779°	2.6′′ ^*	Good	1 (T)	7.9′	2.0 ks	The source is 5.8-σ above the RASS limit.
Mean XRT rate: 0.463 (±0.023) ct s^-1 Peak XRT rate: 0.76 (±0.13) ct s^-1 RASS PSPC 3-σ upper limit: 0.03 ct s^-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 0.61 (±0.03) ct s^-1 Peak XRT rate converted to PSPC: 1.00 (±0.16) ct s^-1 Mean XRT flux: 1.47 (±0.07) ×10^-11 erg cm^-1s^-1 Peak XRT flux: 2.4 (±0.4) ×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. 0 sources match catalogued sources.

#	RA (J2000)	Dec (J2000)	Err₉₀¹	Detection Flag²	Rank³	Dist from SVOM/ECLAIRs pos	Exposure	Notes
1 [details]	15h 37m 51.02s234.46260°	+63° 22′ 04.0″63.36779°	2.6′′ ^*	Good	1 (T)	7.9′	2.0 ks	The source is 5.8-σ above the RASS limit.
Mean XRT rate: 0.463 (±0.023) ct s^-1 Peak XRT rate: 0.76 (±0.13) ct s^-1 RASS PSPC 3-σ upper limit: 0.03 ct s^-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 0.61 (±0.03) ct s^-1 Peak XRT rate converted to PSPC: 1.00 (±0.16) ct s^-1 Mean XRT flux: 1.47 (±0.07) ×10^-11 erg cm^-1s^-1 Peak XRT flux: 2.4 (±0.4) ×10^-11 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position
2 [details]	15h 38m 46.01s234.69170°	+63° 13′ 12.1″63.22004°	6.5′′	Reasonable	3 (U)	8.9′	2.0 ks
Mean XRT rate: 3.6 (+2.1, -1.6) ×10^-3 ct s^-1 Peak XRT rate: 3.6 (+2.1, -1.6) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.04 ct s^-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 4.2 (+2.5, -1.8) ×10^-3 ct s^-1 Peak XRT rate converted to PSPC: 4.2 (+2.5, -1.8) ×10^-3 ct s^-1 Mean XRT flux: 1.1 (+0.7, -0.5) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 1.1 (+0.7, -0.5) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum
3 [details]	15h 38m 27.20s234.61331°	+63° 28′ 55.2″63.48199°	7.7′′	Poor	3 (U)	8.0′	2.0 ks
Mean XRT rate: 3.7 (+2.1, -1.6) ×10^-3 ct s^-1 Peak XRT rate: 3.7 (+2.1, -1.6) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 2088442581726740.00 ct s^-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 4.4 (+2.6, -1.9) ×10^-20 ct s^-1 Peak XRT rate converted to PSPC: 4.4 (+2.6, -1.9) ×10^-20 ct s^-1 Mean XRT flux: 9 (+5, -4) ×10^-12 erg cm^-1s^-1 Peak XRT flux: 9 (+5, -4) ×10^-12 erg cm^-1s^-1 Products: Light curve \| Spectrum

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Exposure map

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FITS exposure map.