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EP_FIELD00075
EP
75
/EP
GRB 250919A: Swift observation summary
This is a confirmed GRB (GRB 250919A), the afterglow is source 1 -- please see the GRB results at https://www.swift.ac.uk/xrt_products/03000101 for updated analysis
.| Mission: | Einstein Probe/WXT |
|---|---|
| Einstein Probe RA: | 298.552° |
| Einstein Probe Dec: | -48.840° |
| Einstein Probe Err: | 21.6 arcsec |
| T0: | 2025-09-19 02:14:55 UT |
| Galactic: | 350.03° -30.11° |
| Galactic NH: | 4.29× 1020 cm-2 |
| Sun distance: | 111.78° |
|---|---|
| Sun angle: | 8.15 [hr] (East of Sun) |
| Moon distance: | 139.21° |
| Visibility of this field. | |
- Data analysed so far:
- ObsID: 03000101001 with 1.7 ks exposure.
So far 1 fields have been scheduled for observations. Data are available and processed for 1 of these.
- 3000101 — 1.7 ks of cleaned data taken between 2025-09-19 06:24:23 and 2025-09-19 06:54:38
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] |
19h 54m 13.00s | -48° 50′ 15.9″ | 2.5′′ * | Good | 1 (T) | 9.6′′ | 1.7 ks | The source is 4.4-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 1 sources have been found in the XRT data. 0 sources match catalogued sources.
| # | RA (J2000) | Dec (J2000) | Err901 | Detection Flag2 |
Rank3 | Dist from Einstein Probe/WXT pos |
Exposure | Notes | Vizier |
|---|---|---|---|---|---|---|---|---|---|
| 1 [details] |
19h 54m 13.00s | -48° 50′ 15.9″ | 2.5′′ * | Good | 1 (T) | 9.6′′ | 1.7 ks | The source is 4.4-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.
Image
Select image style: Draggable PNG | JS9.
