Skip banner and navigation tools.

 |  site map

XRT position for GRB 140114A enhanced by UVOT field astrometry


RA (J2000):12h 34m 05.08s (188.52118)
Dec (J2000):+27° 57′ 02.0′′ (27.95055)
90% Error radius:1.4′′
Number of overlaps included in position: 17
Exposure time in final position: 10099 s

Total number of overlaps considered: 22
Total overlap time: 11102 s
Number of overlaps where no X-ray source was found: 2
Number of low-X-ray-count fits rejected: 0
Number of spurious fits rejected: 0
Number of bad astrometric corrections:0
Number of outliers removed: 3

For details of how these positions are produced, and why some positions are rejected, see the online documentation.

All XRT GRB positions

Final Position

The image below shows the UVOT field with the final, astrometrically corrected XRT refined position. The image is 50" to a side, and contains 116 s of data in the V filter.


UVOT image with the final position

Individual Frame Positions

The final position (magenta) is the weighted mean of 17 positions (green). A further 3 positions were rejected, either because they had too few photons to be secure (red) or because they are more than 3 sigma away from the mean position, more than 40" from the early mean, or had a problematic astrometric correction (yellow). The image is 50" to a side.


V-band image with the final position and all component positions