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 J1946.4-5403

Field

Detected Excesses

Swift-XRT image of the field for 3FGL J1946.4-5403 Swift-XRT detections in the field for 3FGL J1946.4-5403

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 19 46 33.57 -54 02 35.17 4.63 (4.9 ± 0.8) x 10-3 59 6.110 6.146
2 19 45 55.54 -53 59 11.09 4.47 (5.0 ± 0.8) x 10-3 54 6.198 6.139
3 19 47 20.59 -54 11 07.17 5.76 (1.6 ± 0.5) x 10-3 18 3.139 3.301
4 19 47 03.41 -54 00 13.39 4.72 (1.6 ± 0.5) x 10-3 38 3.892 3.084

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 19 46 59.22 -54 08 58.93 4.92 (1.4 ± 0.5) x 10-3 24 3.091 2.972
2 19 45 55.66 -53 55 33.53 5.20 (1.3 ± 0.4) x 10-3 23 3.381 2.944
3 19 46 09.98 -54 11 32.65 5.35 (1.3 ± 0.5) x 10-3 21 3.039 2.866
4 19 45 30.51 -53 54 01.78 4.97 (1.1 ± 0.4) x 10-3 17 2.576 2.457
5 19 47 25.10 -54 00 40.40 4.92 (1.0 ± 0.4) x 10-3 23 2.648 2.429
6 19 45 27.02 -53 59 32.60 5.02 (10 ± 4) x 10-4 26 3.228 2.368

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 3FGL J1946.4-5403 Swift-XRT image with known radio, optical and UV sources for 3FGL J1946.4-5403

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 3XMM J194634.4-540343 19 46 34.49 -54 03 43.20 1.07 XMM-NEWTON
2 3XMM J194633.6-540236 19 46 33.67 -54 02 36.24 1.22 XMM-NEWTON
3 3XMM J194622.5-540122 19 46 22.61 -54 01 22.08 2.17 XMM-NEWTON
4 3XMM J194614.3-540458 19 46 14.30 -54 04 58.44 2.48 XMM-NEWTON
5 3XMM J194615.5-540604 19 46 15.53 -54 06 05.04 3.19 XMM-NEWTON
6 3XMM J194633.9-540705 19 46 33.96 -54 07 05.16 3.79 XMM-NEWTON
7 3XMM J194657.5-540428 19 46 57.55 -54 04 28.56 4.54 XMM-NEWTON
8 3XMM J194629.1-535807 19 46 29.14 -53 58 08.04 5.29 XMM-NEWTON
9 3XMM J194613.1-540823 19 46 13.15 -54 08 23.28 5.39 XMM-NEWTON
10 3XMM J194704.1-540010 19 47 04.18 -54 00 10.44 6.29 XMM-NEWTON
11 3XMM J194628.1-540943 19 46 28.15 -54 09 43.56 6.30 XMM-NEWTON
12 3XMM J194605.0-535802 19 46 05.90 -53 58 02.28 6.31 XMM-NEWTON
13 3XMM J194544.6-540514 19 45 44.66 -54 05 14.28 6.54 XMM-NEWTON
14 3XMM J194545.3-540013 19 45 45.34 -54 00 13.68 6.96 XMM-NEWTON
15 3XMM J194549.2-535847 19 45 49.27 -53 58 48.00 7.27 XMM-NEWTON
16 3XMM J194654.1-535601 19 46 54.12 -53 56 01.32 8.37 XMM-NEWTON
17 3XMM J194611.7-541137 19 46 11.78 -54 11 36.96 8.51 XMM-NEWTON
3XMM J194611.7-541137 19 46 11.64 -54 11 36.60 8.51 XMM-NEWTON
3XMM J194611.7-541137 19 46 12.41 -54 11 38.76 8.53 XMM-NEWTON
18 3XMM J194547.8-535702 19 45 47.88 -53 57 02.16 8.64 XMM-NEWTON
19 3XMM J194634.0-535447 19 46 34.80 -53 54 47.16 8.69 XMM-NEWTON
20 3XMM J194724.5-540026 19 47 24.60 -54 00 26.28 8.90 XMM-NEWTON
21 3XMM J194640.1-541217 19 46 40.13 -54 12 18.00 9.07 XMM-NEWTON
22 3XMM J194556.0-535523 19 45 56.11 -53 55 23.88 9.26 XMM-NEWTON
23 3XMM J194709.6-541042 19 47 09.67 -54 10 42.24 9.56 XMM-NEWTON
24 3XMM J194639.4-541259 19 46 39.46 -54 12 59.76 9.74 XMM-NEWTON
25 3XMM J194615.2-535347 19 46 15.24 -53 53 47.76 9.79 XMM-NEWTON
26 3XMM J194706.6-535458 19 47 06.65 -53 54 57.96 10.23 XMM-NEWTON
27 3XMM J194735.2-540610 19 47 35.26 -54 06 10.08 10.32 XMM-NEWTON
28 3XMM J194530.4-540928 19 45 30.41 -54 09 28.08 10.32 XMM-NEWTON
29 3XMM J194720.9-541009 19 47 20.95 -54 10 09.48 10.34 XMM-NEWTON
30 3XMM J194733.2-540805 19 47 33.31 -54 08 05.64 10.73 XMM-NEWTON
31 3XMM J194720.7-541106 19 47 20.71 -54 11 06.36 10.95 XMM-NEWTON
32 3XMM J194621.0-541422 19 46 21.79 -54 14 22.56 10.99 XMM-NEWTON
33 3XMM J194708.1-535325 19 47 08.16 -53 53 25.44 11.65 XMM-NEWTON
34 3XMM J194628.2-535145 19 46 28.22 -53 51 45.36 11.66 XMM-NEWTON
35 3XMM J194558.7-541450 19 45 58.75 -54 14 50.28 12.17 XMM-NEWTON
36 3XMM J194524.9-541146 19 45 24.98 -54 11 47.04 12.40 XMM-NEWTON
37 3XMM J194744.3-535813 19 47 44.33 -53 58 13.80 12.43 XMM-NEWTON
38 3XMM J194515.4-541006 19 45 15.50 -54 10 06.24 12.49 XMM-NEWTON
39 3XMM J194530.6-535406 19 45 30.60 -53 54 06.48 12.51 XMM-NEWTON
40 2RXS J194529.1-541234 19 45 29.14 -54 12 34.56 12.52 ROSAT
2RXS J194529.1-541234 19 45 29.14 -54 12 34.56 12.52 ROSAT
41 3XMM J194518.0-541132 19 45 18.17 -54 11 33.72 13.01 XMM-NEWTON
3XMM J194518.0-541132 19 45 18.31 -54 11 32.64 13.02 XMM-NEWTON
3XMM J194518.0-541132 19 45 17.98 -54 11 31.92 13.02 XMM-NEWTON
42 3XMM J194519.1-541343 19 45 19.37 -54 13 40.80 14.31 XMM-NEWTON
3XMM J194519.1-541343 19 45 19.10 -54 13 45.12 14.40 XMM-NEWTON

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 PSR J1946-5403 19 46 24.00 -54 01 59.88 1.51 ATNFPULSAR
2 SUMSS J194639-540637 19 46 39.10 -54 06 37.08 3.62 SUMSS
[SPT2015] ATCA J1946-5406 19 46 39.31 -54 06 39.96 3.68 FER2FUSRID
[PME2013] J1946-5406 19 46 39.70 -54 06 39.96 3.71 AT2FGLUS
3 SUMSS J194608-540603 19 46 08.30 -54 06 03.96 3.85 SUMSS
4 [SPT2015] ATCA J1946-5408 19 46 30.70 -54 08 04.92 4.69 FER2FUSRID
[PME2013] J1946-5408 19 46 30.70 -54 08 06.00 4.70 AT2FGLUS
5 SUMSS J194724-535931 19 47 24.79 -53 59 30.84 9.28 SUMSS
GLEAM J194725-535927 19 47 25.30 -53 59 26.88 9.37 GLEAMEGCAT
6 SUMSS J194721-541056 19 47 21.50 -54 10 57.00 10.92 SUMSS
7 SUMSS J194506-540535 19 45 06.41 -54 05 35.16 12.08 SUMSS
8 GLEAM J194511-535440 19 45 11.90 -53 54 41.04 14.13 GLEAMEGCAT
9 SUMSS J194510-535405 19 45 10.30 -53 54 06.12 14.68 SUMSS

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