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 J1818.3-1233

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1818.3-1233 Swift-XRT detections in the field for 4FGL J1818.3-1233


No detected excesses found.

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 31.15 -12 30 26.37 6.52 (6 ± 2) x 10-3 11 2.986 2.824
2 18 17 45.99 -12 34 53.41 7.97 (4 ± 2) x 10-3 8 2.320 2.328

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1818.3-1233 Swift-XRT image with known radio, optical and UV sources for 4FGL J1818.3-1233

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 4XMM J181824.3-122753 18 18 24.31 -12 27 53.28 5.52 XMM-NEWTON
2 2RXP J181746.0-123451 18 17 45.94 -12 34 50.88 8.13 ROSAT
1WGA J1817.7-1234 18 17 45.41 -12 34 52.32 8.27 ROSAT
3 4XMM J181825.4-122421 18 18 25.44 -12 24 21.24 9.03 XMM-NEWTON
4 4XMMs J181806.3-122417 18 18 06.31 -12 24 17.28 9.43 XMM-NEWTON
4XMM J181806.2-122416 18 18 06.24 -12 24 16.56 9.45 XMM-NEWTON
5 4XMMs J181832.6-122421 18 18 32.64 -12 24 21.60 9.51 XMM-NEWTON
4XMM J181832.5-122419 18 18 32.54 -12 24 19.80 9.53 XMM-NEWTON
6 4XMM J181819.6-122336 18 18 19.68 -12 23 36.24 9.63 XMM-NEWTON
4XMMs J181819.7-122335 18 18 19.78 -12 23 35.88 9.64 XMM-NEWTON
7 4XMMs J181746.4-122651 18 17 46.44 -12 26 51.00 10.11 XMM-NEWTON
4XMM J181746.3-122649 18 17 46.39 -12 26 49.20 10.15 XMM-NEWTON
8 1RXS J181851.9-122700 18 18 51.91 -12 26 60.00 10.24 ROSAT
2RXS J181851.9-122659 18 18 51.96 -12 26 59.64 10.25 ROSAT
9 4XMMs J181748.1-122457 18 17 48.12 -12 24 57.24 11.13 XMM-NEWTON
4XMM J181748.0-122456 18 17 48.00 -12 24 56.52 11.16 XMM-NEWTON
10 4XMM J181850.7-122443 18 18 50.74 -12 24 43.92 11.56 XMM-NEWTON
4XMMs J181850.7-122444 18 18 50.76 -12 24 43.92 11.57 XMM-NEWTON
11 4XMMs J181848.3-122340 18 18 48.31 -12 23 40.92 11.99 XMM-NEWTON
4XMM J181848.3-122339 18 18 48.31 -12 23 39.84 12.00 XMM-NEWTON
12 4XMM J181811.8-122117 18 18 11.86 -12 21 17.64 12.05 XMM-NEWTON
4XMMs J181811.7-122117 18 18 11.76 -12 21 17.28 12.06 XMM-NEWTON
13 2RXP J181730.6-123020 18 17 30.65 -12 30 20.16 12.06 ROSAT
1WGA J1817.5-1230 18 17 30.10 -12 30 21.96 12.18 ROSAT
14 4XMM J181750.4-122250 18 17 50.42 -12 22 50.88 12.45 XMM-NEWTON
4XMMs J181750.4-122250 18 17 50.42 -12 22 50.52 12.46 XMM-NEWTON
15 4XMM J181800.1-122121 18 18 00.14 -12 21 20.88 12.70 XMM-NEWTON
4XMMs J181800.1-122120 18 18 00.17 -12 21 20.52 12.71 XMM-NEWTON
16 4XMMs J181741.9-122319 18 17 41.95 -12 23 20.04 13.34 XMM-NEWTON
4XMM J181741.9-122319 18 17 41.93 -12 23 20.04 13.34 XMM-NEWTON
17 4XMM J181846.8-122147 18 18 46.80 -12 21 47.16 13.36 XMM-NEWTON
4XMMs J181846.8-122146 18 18 46.82 -12 21 46.44 13.37 XMM-NEWTON
18 4XMM J181846.3-122114 18 18 46.39 -12 21 14.04 13.78 XMM-NEWTON
4XMMs J181846.5-122114 18 18 46.54 -12 21 14.04 13.80 XMM-NEWTON
19 4XMM J181749.9-122116 18 17 49.92 -12 21 16.92 13.85 XMM-NEWTON
4XMMs J181749.6-122116 18 17 49.68 -12 21 16.56 13.88 XMM-NEWTON
20 4XMMs J181736.1-122319 18 17 36.14 -12 23 20.04 14.33 XMM-NEWTON
4XMM J181736.1-122319 18 17 36.14 -12 23 18.96 14.34 XMM-NEWTON
21 1BMW 181907.2-122414 18 19 07.25 -12 24 13.68 14.90 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 PMN J1818-1230 18 18 21.19 -12 30 37.08 2.69 PMN
2 WDS J18184-1239 18 18 24.00 -12 39 00.00 5.92 WDS
3 KS Ser 18 18 14.95 -12 27 07.20 6.17 GCVS
4 NVSS J181759-122810 18 18 00.00 -12 28 10.92 6.80 NVSS
5 NVSS J181833-122718 18 18 33.70 -12 27 19.08 6.97 NVSS
6 NVSS J181805-123954 18 18 05.30 -12 39 55.08 7.42 NVSS
7 [WBH2005] G18.121+1.436 18 18 44.50 -12 28 30.00 7.90 WBHGP20CM
8 V404 Ser 18 18 47.47 -12 37 12.36 8.09 GCVS
9 NVSS J181758-122647 18 17 58.51 -12 26 48.12 8.09 NVSS
10 QORG J181745.9-123455 18 17 45.91 -12 34 54.84 8.16 QORGCAT
11 PPM 234306 18 17 47.04 -12 29 57.84 8.37 PPM
BD-12 4970 18 17 47.02 -12 29 57.84 8.37 ACRS
SAO 161280 18 17 46.90 -12 29 57.84 8.40 SAO
12 CGMW 3-2068 18 18 06.24 -12 41 11.04 8.51 CGMW
PGC 202353 18 18 06.19 -12 41 11.04 8.51 PGC2003
13 LBN 71 18 18 48.55 -12 28 44.04 8.58 LBN
[WBH2005] G18.008+1.339 18 18 52.39 -12 37 12.00 9.15 WBHGP20CM
14 PPM 719106 18 18 50.23 -12 38 16.08 9.22 PPM
PPM 719107 18 18 53.52 -12 36 54.00 9.28 PPM
15 PMN J1818-1240 18 18 44.21 -12 40 05.88 9.29 PMN
16 NVSS J181853-123718 18 18 53.21 -12 37 18.84 9.37 NVSS
17 SAO 161312 18 18 50.64 -12 27 13.68 9.86 SAO
BD-12 4991 18 18 50.71 -12 27 14.04 9.86 ACRS
PPM 234342 18 18 50.71 -12 27 14.40 9.86 PPM
168135 18 18 50.86 -12 27 13.68 9.90 WACKERLING
18 PMN J1818-1237 18 18 55.61 -12 37 41.88 10.07 PMN
19 [WBH2005] G18.155+1.562 18 18 21.00 -12 23 07.08 10.13 WBHGP20CM
20 NVSS J181736-123517 18 17 36.60 -12 35 17.16 10.45 NVSS
21 NVSS J181735-123329 18 17 34.99 -12 33 29.88 10.64 NVSS
[WBH2005] G18.135+1.372 18 19 00.00 -12 29 35.16 10.73 WBHGP20CM
22 NVSS J181859-122927 18 19 00.00 -12 29 26.88 10.77 NVSS
23 [WBH2005] G18.175+1.439 18 18 50.11 -12 25 32.16 10.87 WBHGP20CM
24 NVSS J181830-124341 18 18 31.01 -12 43 41.88 10.90 NVSS
25 [WBH2005] G18.184+1.453 18 18 48.10 -12 24 42.12 11.16 WBHGP20CM
26 QORG J181850.6-122456 18 18 50.59 -12 24 56.16 11.39 QORGCAT
27 [WBH2005] G18.165+1.393 18 18 58.70 -12 27 23.04 11.41 WBHGP20CM
28 GPA 017.93+1.67 18 17 31.61 -12 32 13.92 11.51 GPA
29 NVSS J181740-124041 18 17 40.70 -12 40 41.88 11.88 NVSS
30 QORG J181731.0-123029 18 17 31.01 -12 30 29.16 11.94 QORGCAT
31 PPM 234312 18 17 54.89 -12 43 45.84 12.02 PPM
BD-12 4972 18 17 54.89 -12 43 45.84 12.02 ACRS
SAO 161287 18 17 54.84 -12 43 47.64 12.05 SAO
32 KP Ser 18 17 35.88 -12 39 19.80 12.08 GCVS
33 V401 Ser 18 18 49.54 -12 23 42.72 12.15 GCVS
[WBH2005] G18.180+1.391 18 19 01.10 -12 26 36.96 12.29 WBHGP20CM
[WBH2005] G18.181+1.389 18 19 01.49 -12 26 39.84 12.36 WBHGP20CM
34 NVSS J181902-122641 18 19 01.99 -12 26 42.00 12.45 NVSS
TGSSADR J181902.1-122644 18 19 02.21 -12 26 44.88 12.45 GMRTAS150M
35 NVSS J181750-122245 18 17 50.90 -12 22 45.84 12.46 NVSS
TXS 1816-124 18 19 02.30 -12 26 44.88 12.47 TEXAS
[WBH2005] G18.181+1.381 18 19 03.41 -12 26 52.08 12.66 WBHGP20CM
36 [WBH2005] G18.161+1.353 18 19 07.10 -12 28 44.04 12.67 WBHGP20CM
37 [WBH2005] G18.201+1.419 18 18 57.41 -12 24 42.84 12.73 WBHGP20CM
38 [WBH2005] G18.198+1.405 18 19 00.19 -12 25 18.12 12.88 WBHGP20CM
[WBH2005] G18.201+1.411 18 18 59.21 -12 24 56.16 12.92 WBHGP20CM
39 [WBH2005] G18.218+1.443 18 18 54.10 -12 23 09.96 13.29 WBHGP20CM
40 NVSS J181743-124333 18 17 43.80 -12 43 33.96 13.38 NVSS
41 [WBH2005] G17.929+1.267 18 18 58.70 -12 43 23.88 14.12 WBHGP20CM
42 KK Ser 18 19 05.11 -12 43 20.64 15.20 GCVS
43 PPM 719112 18 19 02.98 -12 44 35.52 15.69 PPM

Penn State University Goddard Space Flight Center Swift