Swift-XRT Survey of Fermi Unassociated Sources

These results are part of the Swift program to follow-up Fermi unassociated sources in an attempt to find X-ray counterparts to the unidentified gamma-ray sources. As new observations are performed, these pages will be updated in nearly real time. Please use these results as a guide and proceed with caution when using them in a publication since they are the result of an automated analysis.

When using these data and results in publications, please reference M.C. Stroh & A.D. Falcone 2013, ApJS, 207, 28; arXiv: 1305.4949 for a description of many of the analysis techniques used to reduce these data (note: a more detailed paper describing the complete data set and analysis is forthcoming). Please contact Abe Falcone and Michael Stroh at unassociated@swift.psu.edu if you have any questions about the program or the analysis, or to simply to let us know that you've made use of these data.
Caution: For completeness, sources are listed if the "detection" exceeds 3 sigma. The significances and images are shown so you can make more stringent significance cuts, if desired.

3FGL J0239.4+1326

Field

Detected Excesses
Swift-XRT image of the field for 3FGL J0239.4+1326 Swift-XRT detections in the field for 3FGL J0239.4+1326

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 02 38 54.39 +13 15 48.40 5.24 (7 ± 2) x 10-3 32 4.770 5.047
2 02 39 05.24 +13 27 28.29 4.83 (4.5 ± 1.3) x 10-3 35 3.578 3.393
3 02 39 12.63 +13 20 54.38 4.76 (4.1 ± 1.3) x 10-3 38 3.217 3.135

Rejected Excesses (Due to Overlaps or SNR(Sosta) < 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 02 39 00.37 +13 16 25.83 5.05 (3.6 ± 1.2) x 10-3 22 2.835 2.920
2 02 39 12.71 +13 20 53.87 4.76 (3.0 ± 1.1) x 10-3 37 2.551 2.652
3 02 39 57.75 +13 33 51.02 5.96 (3.2 ± 1.3) x 10-3 12 2.425 2.469
4 02 39 20.43 +13 24 01.37 5.20 (2.2 ± 1.0) x 10-3 23 2.834 2.207
5 02 40 07.67 +13 27 58.31 5.11 (2.3 ± 1.0) x 10-3 16 2.418 2.198

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 3FGL J0239.4+1326 Swift-XRT image with known radio, optical and UV sources for 3FGL J0239.4+1326

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 SWIFT J023905.6+132718 02 39 05.62 +13 27 18.36 5.60 SWIFT
2 2RXP J023858.5+131517 02 38 58.49 +13 15 16.92 13.43 ROSAT
SWIFT J023854.6+131549 02 38 54.60 +13 15 49.32 13.54 SWIFT
3 XMMSL2 J023853.7+131553 02 38 53.71 +13 15 52.92 13.62 XMM-NEWTON
XMMSL2 J023853.7+131553 02 38 53.71 +13 15 52.92 13.62 XMM-NEWTON
2RXP J023853.8+131549 02 38 53.78 +13 15 48.96 13.66 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
GB6 J0239+1327 02 39 26.50 +13 27 32.04 1.07 GB6
[SPT2015] VLA J0239+1327 02 39 27.19 +13 27 38.88 1.11 FER2FUSRID
1 NVSS J023927+132738 02 39 27.10 +13 27 38.16 1.12 NVSS
2 NVSS J023932+133427 02 39 32.90 +13 34 27.84 7.97 NVSS
3 NVSS J023853+132743 02 38 53.30 +13 27 42.84 8.63 NVSS
TGSSADR J023853.2+132744 02 38 53.30 +13 27 43.92 8.63 GMRTAS150M
GLEAM J023852+132750 02 38 52.39 +13 27 51.12 8.86 GLEAMEGCAT
4 NVSS J023959+132124 02 39 59.81 +13 21 24.84 9.21 NVSS
5 NVSS J023857+133157 02 38 57.70 +13 31 58.08 9.21 NVSS
TGSSADR J023857.8+133200 02 38 57.79 +13 32 00.96 9.22 GMRTAS150M
GLEAM J023857+133200 02 38 57.19 +13 32 00.96 9.35 GLEAMEGCAT
GLEAM J023956+133356 02 39 56.59 +13 33 56.16 10.06 GLEAMEGCAT
6 NVSS J023956+133402 02 39 56.50 +13 34 01.92 10.12 NVSS
7 TGSSADR J023954.9+133425 02 39 55.01 +13 34 24.96 10.16 GMRTAS150M
TGSSADR J023957.3+133355 02 39 57.29 +13 33 55.08 10.17 GMRTAS150M
8 NVSS J023946+133810 02 39 46.01 +13 38 09.96 12.37 NVSS

Penn State University Goddard Space Flight Center Swift