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EP_FIELD00015
EP
15
/EP
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.
So far 1 fields have been scheduled for observations. Data are available and processed for 1 of these.
- 19520 — 4.2 ks of cleaned data taken between 2025-02-05 22:37:48 and 2025-02-06 14:21:41
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. |
 |
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 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. |
|
| 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. |
|
| 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. | |
| 4 [details] |
07h 34m 10.56s | +32° 22′ 03.7″ | 5.2′′ | Good | 3 (U) | 1.2′ | 4.2 ks | |
|
| 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. | |
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.
