- Home
- About
- Support
- Data Access
- Data Analysis
- GRB 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
Swift Trigger: 609885
Presumed name: GRB 140818B
| BAT | 18h 04m 35.52s, -01° 21′ 39.6″ |
|---|---|
| position: | (271.148, -1.361 ± 180″) |
| XRT | 18h 04m 32.47s, -01° 23′ 12.5″ |
| position: | (271.1353, -1.3868 ± 2.2″) |
| UVOT | No position available. |
| Galactic NHI: | 2.09×100 cm-2 |
| Galactic E(B-V): | 0.865 mag |
| Best RA: | 18h 04m 32.47s | = 271.1353 d |
|---|---|---|
| Best Dec: | -01° 23′ 12.5″ | = -1.3868 d |
| Gal Lat: | 9.77 | |
| Gal Long: | 26.28 | |
| Sun angle: | 122.73°, -8.2 hr East of Sun | |
1Sper #7 auto processing.
Observability of this burst for Swift.
UVOT data
u image
white image
white image
Blink images with DSS (link via GSFC)
XRT SPER data
SPER results page for this trigger.
There are 7 SPER messages, and 1 objects have been found
- Object 1 - enhanced position.
- RA (J2000) : 18 04 32.47 (-1.3868)
- Dec (J2000): -01 23 12.4 ( -1.38710)
- Error (90%): 2.2
- Counts in Source: 65
See the SPER page for details of how this position was produced.
Known transients within 5′ of the GRB
Click on the offset to view the transient announcement.
| Offset (′′) | RA | Dec | Date reported | Source | Misc | Query |
|---|---|---|---|---|---|---|
| 2.1′′ | 271.13556 | -1.38629 | GCN #16712 | GRB 140818B: Enhanced Swift-XRT position |  | |
| 2.1′′ | 271.13554 | -1.38628 | GCN #16757 | GRB140818B� the review of the sky area in plate archives | | |
| 2.7′′ | 271.13529 | -1.38606 | GCN #16711 | GRB 140818B: OSN I-band afterglow candidate | | |
| 2.8′′ | 271.13529 | -1.38603 | GCN #16718 | GRB 140818B : Correction to GCN 16713 | | |
| 4.5′′ | 271.13654 | -1.38661 | GCN #16709 | GRB 140818B: Swift detection of a burst | | |
| 5.6′′ | 271.13650 | -1.38581 | GCN #16780 | GRB 140818B: TShAO optical upper limit | | |
| 12.5′′ | 271.13529 | -1.38333 | GCN #16713 | GRB140818B : GROND afterglow candidate | | |
| 165.5′′ | 271.16750 | -1.35397 | GCN #16721 | GRB 140818B� Swift-BAT refined analysis | |
There are 16 matches in total. See the full table for details.
Catalogue Searches. Searched 3.33′ around XRT position
Click on the distance to view the full details (not available for sources from the SSS catalogue). Click on the column headers to sort the table on that column (click again to invert sort order).
SIMBAD
| RA* | Dec* | SIMBAD name | Query | ||
|---|---|---|---|---|---|
| 177.3 | 271.1175 | -1.4327 | 2MASS J18042821-0125578 | B=17.400, H=7.266, J=8.378, K=6.784, R=14.100 | |
* RA/Dec in equinox J2000
X-ray sources
| RA* | Dec* | Source table2 | Observatory | Query |
|---|
Queried the X-ray MASTER catalogue.
* RA/Dec in equinox J2000
1Energy band for count-rate is mission specific.
Galaxies
| RA* | Dec* | Redshift | Catalogue | Query | ||
|---|---|---|---|---|---|---|
| 12.1 | 271.1387 | -1.3868 | R1=18.5, R2=18.4 | USNO-B1 | | |
| 13.1 | 271.1342 | -1.3903 | B2=20.8, I=18.3, R1=19.1 | USNO-B1 | | |
| 13.4 | 271.1342 | -1.3903 | B=20.7, R2=19.5, i=19.5 | SSS | | |
| 13.8 | 271.1391 | -1.3873 | B1=19.3, B2=18.2, I=16.5, R1=16.9, R2=16.7 | USNO-B1 | | |
| 13.9 | 271.1391 | -1.3874 | B=18.8, R2=17.6, i=17.0 | SSS | | |
| 14.2 | 271.1386 | -1.3846 | B=20.7, R2=18.4, i=18.5 | SSS | | |
| 14.3 | 271.1386 | -1.3846 | B2=20.3, I=17.7, R1=18.1, R2=18.1 | USNO-B1 | | |
| 16.5 | 271.1333 | -1.3909 | I=18.4, R1=19.1, R2=18.6 | USNO-B1 | | |
| 16.7 | 271.1333 | -1.3910 | B=20.9, R2=19.4, i=19.7 | SSS | | |
| 18.5 | 271.1396 | -1.3841 | B2=20.4, I=17.7, R1=17.8 | USNO-B1 | |
Queried APM-N, SDSS, PSCz, SSS, NED, 2MASSX, USNO-B1.
There are 469 galaxies within the position error. The full list is here.
* RA/Dec in equinox J2000
Magnitudes depend on the catalogue. e.g. For Sloan, R is the Sloan r mag, not the Johnson R from APM, for example
Stars
| RA* | Dec* | Catalogue | Query | ||
|---|---|---|---|---|---|
| 8.8 | 271.1340 | -1.3847 | B2=21.1, R2=19.0 | USNO-B1 | |
| 13.8 | 271.1391 | -1.3874 | h=15.2, j=15.7, k=15.1 | 2MASS | |
| 13.9 | 271.1386 | -1.3847 | h=15.9, j=16.6, k=15.3 | 2MASS | |
| 19.8 | 271.1373 | -1.3817 | h=16.0, j=16.7, k=16.2 | 2MASS | |
| 21.2 | 271.1310 | -1.3908 | h=15.4, j=15.9, k=15.0 | 2MASS | |
| 21.3 | 271.1412 | -1.3872 | h=15.9, j=14.5, k=13.4 | 2MASS | |
| 21.5 | 271.1407 | -1.3894 | h=15.1, j=15.6, k=15.0 | 2MASS | |
| 21.7 | 271.1408 | -1.3893 | B1=19.8, B2=18.7, I=16.8, R1=17.4, R2=17.1 | USNO-B1 | |
| 22.6 | 271.1375 | -1.3927 | B2=20.2, I=16.8, R1=18.0, R2=17.8 | USNO-B1 | |
| 22.8 | 271.1374 | -1.3928 | h=14.6, j=15.6, k=14.4 | 2MASS | |
There are 487 stars within the position error. The full list is here.
* RA/Dec in equinox J2000
Magnitudes depend on the catalogue. e.g. For Sloan, R is the Sloan r mag, not the Johnson R from APM, for example.