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.

4FGL J1817.6-3251

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1817.6-3251 Swift-XRT detections in the field for 4FGL J1817.6-3251

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 18 17 43.63 -33 01 07.79 3.51 $ 1.49 ± 0.02 $ 7897 106.800 74.620

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 18 17 51.56 -32 52 59.74 5.08 (2.8 ± 1.0) x 10-3 26 3.119 2.716
2 18 17 14.44 -32 53 29.59 5.53 (2.9 ± 1.1) x 10-3 20 2.805 2.706
3 18 17 40.76 -33 07 27.75 4.86 (2.3 ± 0.9) x 10-3 17 2.567 2.480
4 18 18 05.56 -32 59 54.30 4.57 (2.7 ± 1.2) x 10-3 31 3.031 2.386
5 18 17 48.94 -32 52 46.01 5.00 (2.5 ± 1.1) x 10-3 33 2.590 2.365
6 18 17 28.86 -33 07 03.35 4.76 (2.0 ± 0.9) x 10-3 19 2.814 2.293
7 18 17 38.39 -33 07 40.71 4.81 (2.2 ± 1.0) x 10-3 16 2.661 2.259
8 18 17 27.57 -32 58 59.52 4.50 (2.3 ± 1.1) x 10-3 33 3.339 2.048
9 18 17 41.94 -33 03 36.94 3.87 (3 ± 2) x 10-3 52 3.612 1.998
10 18 17 55.81 -33 00 23.13 3.97 (3 ± 2) x 10-3 53 4.000 1.836
11 18 17 32.67 -33 02 16.32 3.86 (2.5 ± 1.4) x 10-3 52 3.171 1.787
12 18 17 31.66 -32 58 23.54 4.30 (2.0 ± 1.1) x 10-3 42 3.299 1.784
13 18 17 44.35 -33 00 51.91 3.51 (3 ± 2) x 10-3 7744 3.418 1.756
14 18 17 46.65 -33 02 03.90 3.52 (2 ± 2) x 10-3 523 4.374 1.446
15 18 17 43.45 -33 01 01.83 3.51 (2.0 ± 1.4) x 10-3 8130 4.154 1.406
16 18 17 31.53 -32 58 42.72 4.16 (1.3 ± 1.0) x 10-3 33 2.554 1.299
17 18 17 42.29 -33 01 12.14 3.51 (1.4 ± 1.3) x 10-3 7085 3.731 1.045
18 18 17 36.09 -33 02 48.90 3.77 (9 ± 11) x 10-4 73 3.208 0.858
19 18 17 43.54 -33 01 07.07 3.51 (2 ± 2) x 10-3 8170 3.161 0.790
20 18 17 46.82 -33 03 53.04 4.00 (8 ± 10) x 10-4 38 2.575 0.744
21 18 17 43.54 -33 01 07.07 3.51 (2 ± 3) x 10-3 8012 6.945 0.724
22 18 17 42.73 -33 01 04.98 3.51 (7 ± 14) x 10-4 7654 2.850 0.511
23 18 17 43.63 -33 01 07.87 3.51 (9 ± 21) x 10-4 7584 4.665 0.430
24 18 17 55.03 -32 59 54.34 3.91 (6 ± 17) x 10-4 58 4.283 0.383
25 18 17 43.63 -33 01 07.92 3.51 (8 ± 20) x 10-4 7897 4.043 0.378
26 18 17 43.63 -33 01 07.87 3.51 (3 ± 14) x 10-4 7584 3.649 0.242
27 18 17 43.63 -33 01 07.89 3.51 (4 ± 21) x 10-4 7752 4.381 0.189
28 18 17 43.63 -33 01 08.19 3.51 N/A 7518 4.676 N/A
29 18 17 43.63 -33 01 07.87 3.51 N/A 7584 8.682 N/A
30 18 17 43.65 -33 00 58.39 3.51 N/A 7978 6.636 N/A
31 18 17 43.63 -33 01 07.92 3.51 N/A 7897 9.304 N/A
32 18 17 43.91 -33 01 05.71 3.51 N/A 8068 4.817 N/A
33 18 17 43.63 -33 01 07.87 3.51 N/A 7584 6.852 N/A
34 18 17 43.64 -33 01 07.98 3.51 N/A 8170 5.477 N/A
35 18 17 43.63 -33 01 07.92 3.51 N/A 7752 7.748 N/A
36 18 17 43.54 -33 01 08.90 3.51 N/A 7604 4.999 N/A
37 18 17 43.63 -33 01 07.87 3.51 N/A 7584 7.289 N/A
38 18 17 46.65 -33 02 03.90 3.52 N/A 523 3.255 N/A

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1817.6-3251 Swift-XRT image with known radio, optical and UV sources for 4FGL J1817.6-3251

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1WGA J1817.2-3254 18 17 16.51 -32 54 47.16 5.74 ROSAT
2 XTE J1817-330 18 17 43.51 -33 01 06.96 9.83 INTEGRAL
XTE J1817-330 18 17 43.54 -33 01 07.68 9.84 INTEGRAL
XTE J1817-330 18 17 43.54 -33 01 07.68 9.85
XTE J1817-330 18 17 43.44 -33 01 08.40 9.86 INTEGRAL
XTE J1817-330 18 17 43.20 -33 01 12.00 9.91 INTEGRAL
XTE J1817-330 18 17 43.20 -33 01 12.00 9.91 INTEGRAL
XTE J1817-330 18 17 43.44 -33 01 12.00 9.92 INTEGRAL
XTE J1817-330 18 17 42.48 -33 01 15.60 9.96 INTEGRAL

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 V2900 Sgr 18 17 33.29 -32 52 59.52 1.96 GCVS
MGPS J181743-325344 18 17 43.10 -32 53 44.16 2.60 MGPS2
TGSSADR J181743.5-325348 18 17 43.61 -32 53 48.12 2.69 GMRTAS150M
2 NVSS J181743-325349 18 17 43.51 -32 53 49.92 2.72 NVSS
3 PGC 205877 18 17 30.19 -32 53 42.00 2.91 PGC2003
4 NSV 24361 18 17 49.90 -32 48 47.16 3.53 GCVSNSVARS
HD 319211 18 17 51.60 -32 48 52.92 3.71 HDEC
5 V2923 Sgr 18 17 50.16 -32 54 19.08 3.88 GCVS
6 V2931 Sgr 18 17 55.44 -32 53 36.96 4.25 GCVS
7 NVSS J181719-325424 18 17 19.80 -32 54 24.84 4.96 NVSS
8 PPM 297506 18 17 34.08 -32 45 25.20 5.99 PPM
CD-3213970 18 17 34.06 -32 45 24.84 6.00 ACRS
SAO 209960 18 17 34.10 -32 45 23.76 6.01 SAO
9 HD 319210 A 18 17 16.03 -32 47 14.64 6.23 HDEC
HD 319210 B 18 17 16.20 -32 47 08.16 6.27 HDEC
10 SAO 209952 18 17 16.82 -32 56 18.96 6.72 SAO
11 V2904 Sgr 18 17 34.46 -32 58 01.20 6.73 GCVS
CD-3213968 18 17 16.85 -32 56 20.76 6.74 ACRS
PPM 297499 18 17 16.85 -32 56 21.12 6.74 PPM
12 V1838 Sgr 18 17 07.94 -32 48 09.72 7.14 GCVS
13 PGC 205869 18 17 21.10 -32 57 41.04 7.30 PGC2003
14 V2881 Sgr 18 17 07.30 -32 54 46.44 7.37 GCVS
15 WDS J18173-3245 18 17 18.00 -32 45 00.00 7.65 WDS
16 V2883 Sgr 18 17 07.75 -32 46 33.96 8.01 GCVS
17 HD 319209 A 18 17 14.64 -32 44 31.92 8.44 HDEC
HD 319209 B 18 17 14.54 -32 44 26.88 8.52 HDEC
18 V2958 Sgr 18 18 20.16 -32 51 32.76 8.78 GCVS
19 WDS J18175-3300 18 17 30.00 -33 00 00.00 8.83 WDS
20 PGC 205888 18 17 47.50 -32 42 41.04 8.87 PGC2003
21 V2516 Sgr 18 18 14.64 -32 56 45.60 9.35 GCVS
22 NVSS J181658-324617 18 16 58.90 -32 46 17.04 9.71 NVSS
23 HD 319216 18 16 58.97 -32 56 31.20 9.76 HDEC
24 V1841 Sgr 18 18 22.75 -32 54 14.76 9.77 GCVS
25 V2945 Sgr 18 18 09.74 -32 44 01.32 9.86 GCVS
26 V2944 Sgr 18 18 09.07 -32 59 17.16 10.23 GCVS
27 V2937 Sgr 18 18 01.90 -32 42 09.36 10.43 GCVS
28 HD 319218 18 17 19.51 -33 01 23.88 10.81 HDEC
29 NVSS J181714-330104 18 17 14.30 -33 01 04.08 10.96 NVSS
30 PGC 205838 18 16 45.79 -32 49 12.00 11.25 PGC2003
31 PGC 205908 18 18 25.10 -32 56 52.08 11.26 PGC2003
32 NVSS J181730-330256 18 17 30.91 -33 02 56.04 11.70 NVSS
33 V2866 Sgr 18 16 47.83 -32 43 08.40 13.42 GCVS
34 WDS J18167-3258 18 16 42.00 -32 58 00.12 13.57 WDS
35 NVSS J181831-324326 18 18 31.70 -32 43 26.04 13.71 NVSS
MGPS J181831-324321 18 18 31.80 -32 43 21.00 13.78 MGPS2
36 V4162 Sgr 18 17 00.10 -33 02 33.36 13.79 GCVS
37 V1843 Sgr 18 18 33.84 -32 42 42.48 14.51 GCVS
38 HD 319208 18 16 54.98 -32 39 27.36 14.98 HDEC
39 HD 319217 18 16 43.10 -33 01 17.04 15.27 HDEC
40 V2863 Sgr 18 16 44.64 -32 40 04.08 15.96 GCVS

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