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GRB 250205A: Swift observation summary

This is a confirmed GRB (GRB 250205A), the afterglow is source 1 -- please see the GRB results at https://www.swift.ac.uk/xrt_products/00019520 for updated analysis

.
Mission:Einstein Probe/WXT
Einstein Probe RA:113.523°
Einstein Probe Dec:+32.357°
Einstein Probe Err:3.1 arcmin
T0:2025-02-05 21:32:08 UT
Galactic:186.92° +22.53°
Galactic NH:4.39× 1020 cm-2
Sun distance:151.23°
Sun angle:10.28 [hr](East of Sun)
Moon distance:55.57°
Visibility of this field.
First slew:2025-02-05 22:42:33 UT
First observation:2025-02-05 22:37:18 UT
First analysis:2025-02-06 00:36:39 UT
Data analysed so far:
  • ObsID: 00019520001 with 1.7 ks exposure.
  • ObsID: 00019520002 with 2.5 ks exposure.

About tiled field analysis.

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

Details of afterglow candidates

1 sources were found which matches the afterglow criteria.

:

# RA (J2000) Dec (J2000) Err901 Detection
Flag2
Rank3 Dist from
Einstein Probe/WXT pos
Exposure Notes Vizier
1
[details]
07h 34m 02.59s +32° 22′ 18.4″ 2.7′′ * Good 2 (O) 1.1′ 4.2 ks The source is fading with 4.2-σ significance.
The source is 3.9-σ above the RASS 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 5 sources have been found in the XRT data. 3 sources match catalogued sources.

:

# RA (J2000) Dec (J2000) Err901 Detection
Flag2
Rank3 Dist from
Einstein Probe/WXT pos
Exposure Notes Vizier
1
[details]
07h 34m 02.59s +32° 22′ 18.4″ 2.7′′ * Good 2 (O) 1.1′ 4.2 ks The source is fading with 4.2-σ significance.
The source is 3.9-σ above the RASS limit.
Vizier logo
2
[details]
07h 34m 14.13s +32° 17′ 22.5″ 5.3′′ * Good 4 (K) 4.4′ 4.2 ks Matches SIMBAD source: 2MASS J07341390+3217229, 4″ away.
Matches known X-ray source: 2RXP J073414.1+321732 (from ROSAT/ROSPSPC), 8.0529572676549″ away.
Vizier logo
3
[details]
07h 34m 53.84s +32° 26′ 24.6″ 5.7′′ Good 3 (U) 11.4′ 4.2 ks Matches SIMBAD source: [VV2006] J073453.8+322623, 0.9″ away. Vizier logo
4
[details]
07h 34m 10.56s +32° 22′ 03.7″ 5.2′′ Good 3 (U) 1.2′ 4.2 ks Vizier logo
5
[details]
07h 34m 29.51s +32° 26′ 11.7″ 5.7′′ Good 3 (U) 7.0′ 4.2 ks Matches SIMBAD source: SDSS J073429.54+322611.5, 0.5″ 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