GRB 250106A: Swift observation summary

Mission:	SVOM/ECLAIRs
GRB RA:	117.152°
GRB Dec:	+63.770°
GRB Err:	10.8 arcmin
T0:	2025-01-06 02:29:20 UT
Galactic:	152.71° +30.41°
Galactic N_H:	3.87× 10²⁰ cm^-2
Galactic E(B-V):	0.04617593

Sun distance:	138.20°
Sun angle:	11.31 [hr](West of Sun)
Moon distance:	98.45°
Visibility of this field.

Data analysed so far:

ObsID: 00021753001 with 3.0 ks exposure.

Source 1 has been manually confirmed as the GRB afterglow; data for this object are now available through the main GRB results area for this GRB.

About ToO analysis.

Probable afterglow details

A source was found which matches the afterglow criteria.

#	RA (J2000)	Dec (J2000)	Err₉₀¹	Detection Flag²	Dist from SVOM/ECLAIRs pos	Exposure	Notes	Vizier
1 [details]	07h 48m 57.29s117.23869°	+63° 48′ 44.5″63.81235°	3.0′′	Good	3.4′	7.9 ks	The source is fading with 5.1-σ significance.
Mean XRT rate: 2.2 (±0.3) ×10^-2 ct s^-1 Peak XRT rate: 2.3 (±0.4) ×10^-2 ct s^-1 RASS PSPC 3-σ upper limit: 0.04 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 7.4 (±1.1) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 7.5 (±1.4) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]

¹ Radius, 90% confidence.
² Indicates how likely the source is to be real. See the 2SXPS documentation.
^* 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 4 sources have been found in the XRT data. 0 sources match catalogued sources.

#	RA (J2000)	Dec (J2000)	Err₉₀¹	Detection Flag²	Dist from SVOM/ECLAIRs pos	Exposure	Notes
1 [details]	07h 48m 57.29s117.23869°	+63° 48′ 44.5″63.81235°	3.0′′	Good	3.4′	7.9 ks	The source is fading with 5.1-σ significance.
Mean XRT rate: 2.2 (±0.3) ×10^-2 ct s^-1 Peak XRT rate: 2.3 (±0.4) ×10^-2 ct s^-1 RASS PSPC 3-σ upper limit: 0.04 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 7.4 (±1.1) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 7.5 (±1.4) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]
2 [details]	07h 49m 28.47s117.36862°	+63° 42′ 28.6″63.70794°	5.9′′	Good	6.9′	7.9 ks
Mean XRT rate: 6.0 (+1.2, -1.1) ×10^-3 ct s^-1 Peak XRT rate: 6.3 (±1.5) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.02 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 1.6 (±0.3) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 1.7 (±0.4) ×10^-13 erg cm^-1s^-1 Products: Spectrum \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]
3 [details]	07h 47m 37.22s116.90510°	+63° 54′ 41.9″63.91164°	6.5′′	Good	10.7′	7.9 ks
Mean XRT rate: 4.13 (+1.18, -0.94) ×10^-3 ct s^-1 Peak XRT rate: 4.3 (+1.8, -1.4) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.05 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 2.1 (+0.6, -0.5) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 2.2 (+0.9, -0.7) ×10^-13 erg cm^-1s^-1 Products: Spectrum \| Enhanced position \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]
4 [details]	07h 48m 50.31s117.20963°	+63° 49′ 18.4″63.82179°	7.1′′	Poor	3.5′	7.9 ks
Mean XRT rate: 2.29 (+1.31, -0.97) ×10^-3 ct s^-1 Peak XRT rate: 2.29 (+1.31, -0.97) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.03 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 7.0 (+4.0, -3.0) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 7.0 (+4.0, -3.0) ×10^-14 erg cm^-1s^-1 Products: Spectrum \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]

¹ Radius, 90% confidence.
² Indicates how likely the source is to be real. See the 1SXPS documentation.
^* 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

Select image style: Draggable PNG | JS9.

Magnify image and make scrollable?

FITS image.

Exposure map

Magnify exposure map and make scrollable?

FITS exposure map.