- Home
- About
- Support
- Data Access
- Data Analysis
- Data Products
- Publications
-
Links
Databases NED Simbad GCN circulars archive GRB data table Software & Tools Swift Software (HEASoft) Xanadu WebPIMMS Institutional Swift Sites GSFC PSU OAB SSDC MSSL University of Leicester
SVOM_FIELD00022
SVOM
22
/SVOM
GRB 250704A: Swift observation summary
This is a confirmed GRB (GRB 250704A), the afterglow is source 1 -- please see the GRB results at https://www.swift.ac.uk/xrt_products/00019907 for updated analysis
.| Mission: | SVOM/ECLAIRs |
|---|---|
| SVOM RA: | 17.133° |
| SVOM Dec: | -17.280° |
| SVOM Err: | 6.8 arcmin |
| T0: | 2025-07-04 03:42:20 UT |
| Galactic: | 145.66° -79.39° |
| Galactic NH: | 1.50× 1020 cm-2 |
| Sun distance: | 93.11° |
|---|---|
| Sun angle: | 5.74 [hr](West of Sun) |
| Moon distance: | 148.93° |
| Visibility of this field. | |
| First slew: | 2025-07-04 04:29:25 UT |
| First observation: | 2025-07-04 04:28:54 UT |
| First analysis: | 2025-07-04 06:26:20 UT |
- Data analysed so far:
- ObsID: 00019907001 with 1.7 ks exposure.
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] |
01h 08m 46.48s | -17° 19′ 27.0″ | 3.7′′ | Good | 2 (O) | 4.4′ | 1.7 ks | The source is 4.1-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 3 sources have been found in the XRT data. 2 sources match catalogued sources.
| # | RA (J2000) | Dec (J2000) | Err901 | Detection Flag2 |
Rank3 | Dist from SVOM/ECLAIRs pos |
Exposure | Notes | Vizier |
|---|---|---|---|---|---|---|---|---|---|
| 1 [details] |
01h 08m 46.48s | -17° 19′ 27.0″ | 3.7′′ | Good | 2 (O) | 4.4′ | 1.7 ks | The source is 4.1-σ above the RASS limit. | |
| 2 [details] |
01h 09m 21.65s | -17° 21′ 05.9″ | 5.7′′ | Good | 4 (K) | 12.6′ | 1.7 ks | Matches SIMBAD source: LEDA 884732, 2.9″ away. Matches known X-ray source: 1RXS J010921.4-172057 (from ROSAT/RASSBSC), 9.1694183232124″ away. |
|
| 3 [details] |
01h 07m 47.58s | -17° 20′ 41.9″ | 9.1′′ | Good | 4 (K) | 11.3′ | 1.7 ks | Matches SIMBAD source: GALEX J010747.4-172042, 1.6″ away. Matches known X-ray source: LSXPS J010747.3-172044 (from LSXPS), 3.9″ 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.
