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EP_FIELD00020
EP
20
/EP
EP250223a: Swift observation summary
| Mission: | Einstein Probe/WXT |
|---|---|
| Einstein Probe RA: | 98.258° |
| Einstein Probe Dec: | -22.432° |
| Einstein Probe Err: | 3.1 arcmin |
| T0: | 2025-02-23 15:04:35 UT |
| Galactic: | 231.29° -13.89° |
| Galactic NH: | 1.02× 1021 cm-2 |
| Sun distance: | 114.32° |
|---|---|
| Sun angle: | 8.1 [hr](East of Sun) |
| Moon distance: | 129.23° |
| Visibility of this field. | |
| First slew: | 2025-02-23 16:36:15 UT |
| First observation: | 2025-02-23 16:35:43 UT |
| First analysis: | 2025-02-23 21:12:14 UT |
So far 1 fields have been scheduled for observations. Data are available and processed for 1 of these.
1 fields were processed but not included in the analysis. This is because, after standard processing and the removal of times contaminated by light reflected off the bright Earth, there was too little data (<100 s) for source detection to be performed.
Details of afterglow candidates
1 sources were found which matches the afterglow criteria.
| # | RA (J2000) | Dec (J2000) | Err901 | Detection Flag2 |
Rank3 | Exposure | Notes | Vizier | |
|---|---|---|---|---|---|---|---|---|---|
| 1 [details] |
06h 33m 05.50s | -22° 26′ 46.6″ | 6.8′′ * | Good | 2 (O) | 1.2′ | 6.0 ks | The source is fading with 4.0-σ significance. The source is 4.3-σ above the LSPXS limit. |
 |
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.
Sources found so far
So far 2 sources have been found in the XRT data. 1 sources match catalogued sources.
| # | RA (J2000) | Dec (J2000) | Err901 | Detection Flag2 |
Rank3 | Dist from Einstein Probe/WXT pos |
Exposure | Notes | Vizier |
|---|---|---|---|---|---|---|---|---|---|
| 1 [details] |
06h 33m 05.50s | -22° 26′ 46.6″ | 6.8′′ * | Good | 2 (O) | 1.2′ | 6.0 ks | The source is fading with 4.0-σ significance. The source is 4.3-σ above the LSPXS limit. |
|
| 2 [details] |
06h 33m 26.94s | -22° 23′ 24.7″ | 4.7′′ * | Good | 3 (U) | 6.3′ | 6.0 ks | Matches SIMBAD source: ICRF J063326.7-222322, 3.2″ away. | |
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.
