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EP250125a: Swift observation summary

Mission:Einstein Probe/WXT
Einstein Probe RA:175.353°
Einstein Probe Dec:-21.704°
Einstein Probe Err:3.1 arcmin
T0:2025-01-25 02:37:31 UT
Galactic:282.06° +38.31°
Galactic NH:3.53× 1020 cm-2
Sun distance:117.87°
Sun angle:8.80 [hr](West of Sun)
Moon distance:66.13°
Visibility of this field.
First slew:2025-01-25 03:30:29 UT
First observation:2025-01-25 03:25:06 UT
First analysis:2025-01-25 05:57:03 UT
Data analysed so far:
  • ObsID: 00019049001 with 1.7 ks exposure.
  • ObsID: 00019049002 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
Einstein Probe/WXT pos
Exposure Notes Vizier
1
[details]
11h 41m 27.21s -21° 42′ 48.5″ 3.8′′ Good 2 (O) 0.8′ 6.8 ks The source is fading with 3.7-σ significance.
The source is 4.3-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
Einstein Probe/WXT pos
Exposure Notes Vizier
1
[details]
11h 41m 27.21s -21° 42′ 48.5″ 3.8′′ Good 2 (O) 0.8′ 6.8 ks The source is fading with 3.7-σ significance.
The source is 4.3-σ above the LSPXS limit.
Vizier logo
2
[details]
11h 41m 39.72s -21° 45′ 27.2″ 2.5′′ * Good 4 (K) 4.7′ 6.8 ks Matches known X-ray source: 2SXPS J114139.6-214525 (from 2SXPS), 4.1″ away. Vizier logo
3
[details]
11h 41m 31.66s -21° 39′ 29.1″ 5.7′′ Good 4 (K) 3.2′ 6.8 ks Matches known X-ray source: 2SXPS J114131.5-213934 (from 2SXPS), 5.8″ 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