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 J1820.3-1529c

Field

Detected Excesses
Swift-XRT image of the field for 3FGL J1820.3-1529c Swift-XRT detections in the field for 3FGL J1820.3-1529c

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 18 20 24.72 -15 23 08.10 4.52 (7.5 ± 1.2) x 10-3 61 6.618 6.189
2 18 19 34.61 -15 35 15.31 5.24 (2.2 ± 0.7) x 10-3 20 3.698 3.119

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 20 37.40 -15 30 46.46 5.76 (1.7 ± 0.6) x 10-3 18 2.506 2.657
2 18 20 06.09 -15 22 50.04 5.35 (1.7 ± 0.7) x 10-3 17 2.657 2.498

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 3FGL J1820.3-1529c Swift-XRT image with known radio, optical and UV sources for 3FGL J1820.3-1529c

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 4XMM J181958.3-153743 18 19 58.37 -15 37 44.04 10.41 XMM-NEWTON
4XMMs J181958.4-153744 18 19 58.39 -15 37 44.76 10.41 XMM-NEWTON
2 1WGA J1820.8-1537 18 20 53.40 -15 37 47.64 11.03 ROSAT
3 4XMMs J181935.2-152619 18 19 35.21 -15 26 18.96 12.13 XMM-NEWTON
4XMM J181935.1-152619 18 19 35.14 -15 26 19.32 12.14 XMM-NEWTON
4 4XMM J181955.7-154027 18 19 55.73 -15 40 27.12 13.02 XMM-NEWTON
4XMMs J181955.8-154028 18 19 55.80 -15 40 28.20 13.03 XMM-NEWTON
5 2CXO J181934.5-153519 18 19 34.51 -15 35 19.68 13.32 CHANDRA
4XMM J181934.3-153518 18 19 34.39 -15 35 18.24 13.34 XMM-NEWTON
4XMMs J181934.4-153518 18 19 34.39 -15 35 18.24 13.34 XMM-NEWTON
4XMM J181934.3-153518 18 19 34.34 -15 35 18.60 13.35 XMM-NEWTON

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J182031-152802 18 20 31.30 -15 28 03.00 2.20 NVSS
2 [WBH2005] G15.658-0.305 18 20 16.49 -15 28 04.08 2.21 WBHGP6CM
3 NVSS J182028-153135 18 20 28.30 -15 31 36.12 2.48 NVSS
QORG J182018.9-152659 18 20 18.91 -15 26 58.92 2.66 QORGCAT
4 NVSS J182018-152658 18 20 18.79 -15 26 58.92 2.67 NVSS
5 NVSS J182029-153241 18 20 29.11 -15 32 40.92 3.56 NVSS
6 PSR J1820-1529 18 20 40.80 -15 29 49.92 4.09 ATNFPULSAR
7 NVSS J182012-153239 18 20 12.41 -15 32 39.84 4.33 NVSS
8 NVSS J182029-153344 18 20 29.11 -15 33 43.92 4.56 NVSS
9 NVSS J182019-153355 18 20 19.90 -15 33 56.16 4.69 NVSS
10 NVSS J182015-152508 18 20 15.00 -15 25 09.12 4.72 NVSS
11 NVSS J182043-152924 18 20 43.61 -15 29 25.08 4.74 NVSS
12 NVSS J182022-153425 18 20 22.30 -15 34 26.04 5.10 NVSS
13 NVSS J182032-152437 18 20 32.50 -15 24 38.16 5.15 NVSS
14 PPM 719161 18 20 29.21 -15 23 53.16 5.61 PPM
15 WDS J18204-1535 18 20 24.00 -15 34 59.88 5.65 WDS
16 WDS J18203-1535 18 20 18.00 -15 34 59.88 5.83 WDS
17 NVSS J181958-153020 18 19 58.10 -15 30 20.16 6.30 NVSS
18 NVSS J182027-152257 18 20 27.10 -15 22 58.08 6.43 NVSS
19 PPM 719171 18 20 50.71 -15 29 21.12 6.45 PPM
20 NVSS J182052-152839 18 20 52.39 -15 28 39.00 6.89 NVSS
21 PMN J1819-1525 18 19 59.40 -15 25 32.16 7.04 PMN
22 NVSS J182010-152215 18 20 10.80 -15 22 14.88 7.76 NVSS
23 NVSS J181950-153029 18 19 50.90 -15 30 29.88 8.04 NVSS
24 PGCC G15.61-0.48 18 20 48.41 -15 35 40.92 8.66 PLANCKGCC
25 NVSS J181954-152357 18 19 54.70 -15 23 57.12 8.87 NVSS
26 WDS J18209-1524 18 20 54.00 -15 24 00.00 9.00 WDS
27 MAGPIS Discrete G15.69291-0.49 18 21 02.50 -15 31 37.92 9.56 MAGPIS
28 NVSS J181953-152301 18 19 53.71 -15 23 00.96 9.65 NVSS
29 NVSS J181945-152619 18 19 45.41 -15 26 20.04 9.77 NVSS
30 NVSS J182027-153917 18 20 27.91 -15 39 18.00 10.00 NVSS
31 WDS J18202-1539 18 20 12.00 -15 39 00.00 10.07 WDS
32 MAGPIS Discrete G15.63751-0.17 18 19 44.59 -15 25 22.08 10.29 MAGPIS
33 [WBH2005] G15.546-0.208 18 19 41.71 -15 31 14.88 10.35 WBHGP6CM
MAGPIS Discrete G15.54578-0.20 18 19 41.59 -15 31 14.16 10.37 MAGPIS
34 NVSS J182031-151900 18 20 31.01 -15 19 00.84 10.47 NVSS
35 NVSS J182007-151926 18 20 07.51 -15 19 27.12 10.66 NVSS
36 NVSS J182101-153519 18 21 01.20 -15 35 18.96 10.78 NVSS
37 NVSS J182049-152014 18 20 49.51 -15 20 15.00 10.98 NVSS
38 NVSS J182047-151850 18 20 47.40 -15 18 51.12 11.93 NVSS
39 GPA 015.47-0.27 18 19 46.01 -15 37 03.00 11.95 GPA
40 NVSS J182109-153443 18 21 09.19 -15 34 42.96 12.16 NVSS
41 GPA 015.76-0.16 18 19 56.11 -15 18 42.12 12.59 GPA
42 NVSS J182110-153612 18 21 10.01 -15 36 11.88 13.04 NVSS
43 NVSS J182101-151939 18 21 01.80 -15 19 40.08 13.30 NVSS
44 NVSS J181935-152139 18 19 35.11 -15 21 39.96 14.06 NVSS
45 MAGPIS Discrete G15.39997-0.25 18 19 35.50 -15 40 22.08 16.06 MAGPIS
[WBH2005] G15.399-0.258 18 19 35.50 -15 40 23.88 16.07 WBHGP6CM

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