GRB 241112B: Swift observation summary

Mission:	SVOM/ECLAIRs
GRB RA:	29.055°
GRB Dec:	+9.146°
GRB Err:	4.2 arcmin
T0:	2024-11-12 10:57:21 UT
Galactic:	148.57° -50.47°
Galactic N_H:	4.55× 10²⁰ cm^-2
Galactic E(B-V):	0.06479488

Sun distance:	159.88°
Sun angle:	10.75 [hr](East of Sun)
Moon distance:	27.91°
Visibility of this field.

Data analysed so far:

ObsID: 00021730001 with 2.5 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]	01h 56m 09.26s29.03857°	+09° 06′ 29.0″9.10805°	4.1′′	Good	2.5′	2.5 ks	The source is 3.7-σ above the 2SXPS limit.
Mean XRT rate: 2.1 (+0.4, -0.3) ×10^-2 ct s^-1 Peak XRT rate: 2.9 (±0.8) ×10^-2 ct s^-1 RASS PSPC 3-σ upper limit: 0.04 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 6.6 (±1.1) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 9.1 (±2.4) ×10^-13 erg cm^-1s^-1 Products: Light curve \| 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 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 6 sources have been found in the XRT data. 4 sources match catalogued sources.

#	RA (J2000)	Dec (J2000)	Err₉₀¹	Detection Flag²	Dist from SVOM/ECLAIRs pos	Exposure	Notes
1 [details]	01h 56m 09.26s29.03857°	+09° 06′ 29.0″9.10805°	4.1′′	Good	2.5′	2.5 ks	The source is 3.7-σ above the 2SXPS limit.
Mean XRT rate: 2.1 (+0.4, -0.3) ×10^-2 ct s^-1 Peak XRT rate: 2.9 (±0.8) ×10^-2 ct s^-1 RASS PSPC 3-σ upper limit: 0.04 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 6.6 (±1.1) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 9.1 (±2.4) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]
2 [details]	01h 55m 42.54s28.92724°	+09° 11′ 08.4″9.18568°	6.7′′	Good	7.9′	2.5 ks	Matches known X-ray source: 2SXPS J015542.7+091109 (from 2SXPS), 2.7″ away.
Mean XRT rate: 6.0 (+2.4, -1.9) ×10^-3 ct s^-1 Peak XRT rate: 6.0 (+2.4, -1.9) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.0×10⁰ ct s^-1 (XRT equiv count-rate) Mean XRT flux: 5.9 (+2.4, -1.9) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 5.9 (+2.4, -1.9) ×10^-13 erg cm^-1s^-1 Products: Spectrum \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]
3 [details]	01h 55m 32.11s28.88381°	+09° 02′ 26.3″9.04065°	5.8′′	Good	12.0′	2.5 ks	Matches known X-ray source: 2SXPS J015532.3+090224 (from 2SXPS), 4″ away.
Mean XRT rate: 7.0 (+2.7, -2.2) ×10^-3 ct s^-1 Peak XRT rate: 7.0 (+2.7, -2.2) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.0×10⁰ ct s^-1 (XRT equiv count-rate) Mean XRT flux: 2.0 (+0.8, -0.6) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 2.0 (+0.8, -0.6) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]
4 [details]	01h 56m 04.42s29.01842°	+09° 13′ 28.3″9.22453°	6.3′′	Reasonable	5.2′	2.5 ks	Matches SIMBAD source: SDSS J015604.25+091327.6, 2.6″ away.
Mean XRT rate: 3.8 (+1.9, -1.5) ×10^-3 ct s^-1 Peak XRT rate: 3.8 (+1.9, -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: 9 (+5, -4) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 9 (+5, -4) ×10^-14 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]
5 [details]	01h 56m 09.25s29.03855°	+08° 57′ 53.7″8.96491°	9.6′′	Poor	10.9′	2.5 ks	Matches known X-ray source: 2SXPS J015609.3+085754 (from 2SXPS), 1.4″ away.
Mean XRT rate: 4.1 (+2.2, -1.7) ×10^-3 ct s^-1 Peak XRT rate: 4.1 (+2.2, -1.7) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.0×10⁰ ct s^-1 (XRT equiv count-rate) Mean XRT flux: 6.7 (+3.6, -2.8) ×10^-12 erg cm^-1s^-1 Peak XRT flux: 6.7 (+3.6, -2.8) ×10^-12 erg cm^-1s^-1 Products: Spectrum \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]
6 [details]	01h 56m 50.36s29.20985°	+09° 01′ 20.6″9.02240°	5.8′′	Poor	11.8′	769 s	The source is 3.1-σ above the 2SXPS limit.
Mean XRT rate: 2.5 (+0.9, -0.7) ×10^-2 ct s^-1 Peak XRT rate: 2.5 (+0.9, -0.7) ×10^-2 ct s^-1 RASS PSPC 3-σ upper limit: 2.9×10^-3 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 6.2 (+2.2, -1.8) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 6.2 (+2.2, -1.8) ×10^-13 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

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FITS image.

Exposure map

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FITS exposure map.