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GRB 251103A: Swift observation summary

This is a confirmed GRB (GRB 251103A), the afterglow is source 1 -- please see the GRB results at https://www.swift.ac.uk/xrt_products/03000169 for updated analysis

.
Mission:SVOM/ECLAIRs
SVOM RA:146.838°
SVOM Dec:+16.130°
SVOM Err:2.1 arcmin
T0:2025-11-03 04:46:26 UT
Galactic:217.64° +46.08°
Galactic NH:3.57× 1020 cm-2
Sun distance:77.06°
Sun angle:4.76 [hr](West of Sun)
Moon distance:135.82°
Visibility of this field.
Data analysed so far:
  • ObsID: 03000169001 with 1.6 ks exposure.

About tiled field analysis.

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

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]
09h 47m 21.28s +16° 07′ 21.8″ 2.6′′ * Good 1 (T) 0.4′ 1.6 ks The source is 4.7-σ above the LSPXS limit. Vizier logo

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. 2 sources match catalogued sources.

:

# RA (J2000) Dec (J2000) Err901 Detection
Flag2
Rank3 Dist from
SVOM/ECLAIRs pos
Exposure Notes Vizier
1
[details]
09h 47m 21.28s +16° 07′ 21.8″ 2.6′′ * Good 1 (T) 0.4′ 1.6 ks The source is 4.7-σ above the LSPXS limit. Vizier logo
2
[details]
09h 47m 49.95s +16° 03′ 57.9″ 4.6′′ * Good 4 (K) 7.9′ 1.6 ks Matches SIMBAD source: 2MASS J09475010+1604003, 2.3″ away.
Matches known X-ray source: XMMSL3 J094749.7+160359 (from XMM-NEWTON/XMMSLEWCLN), 5.0491183434568″ away.
Vizier logo
3
[details]
09h 46m 47.65s +16° 04′ 56.1″ 6.6′′ Good 4 (K) 8.5′ 1.6 ks Matches known X-ray source: LSXPS J094648.1+160457 (from LSXPS), 8″ away. Vizier logo

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

Select image style: Draggable PNG | JS9.

FITS image.

Image of all observations processed so far

Exposure map

FITS exposure map.

Exposure map of all observations processed so far