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 J1836.8-0727

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1836.8-0727 Swift-XRT detections in the field for 4FGL J1836.8-0727


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 37 04.09 -07 36 07.41 6.93 (1.9 ± 0.7) x 10-3 10 2.725 2.766

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1836.8-0727 Swift-XRT image with known radio, optical and UV sources for 4FGL J1836.8-0727

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 4XMMs J183648.9-072703 18 36 48.91 -07 27 03.96 0.86 XMM-NEWTON
4XMM J183648.8-072703 18 36 48.89 -07 27 03.24 0.87 XMM-NEWTON
2 4XMMs J183652.3-072457 18 36 52.34 -07 24 57.24 2.10 XMM-NEWTON
3 4XMMs J183702.0-072240 18 37 02.09 -07 22 40.44 4.99 XMM-NEWTON
4 4XMM J183707.1-073038 18 37 07.10 -07 30 38.88 5.12 XMM-NEWTON
4XMMs J183707.2-073039 18 37 07.20 -07 30 39.24 5.15 XMM-NEWTON
5 4XMMs J183700.4-072134 18 37 00.41 -07 21 34.56 5.82 XMM-NEWTON
4XMM J183700.4-072134 18 37 00.46 -07 21 34.92 5.82 XMM-NEWTON
6 4XMMs J183658.4-072120 18 36 58.44 -07 21 20.16 5.90 XMM-NEWTON
4XMM J183658.4-072120 18 36 58.44 -07 21 20.16 5.91 XMM-NEWTON
7 4XMMs J183709.8-073123 18 37 09.82 -07 31 23.52 6.13 XMM-NEWTON
8 4XMMs J183718.2-072926 18 37 18.22 -07 29 26.16 6.83 XMM-NEWTON
4XMM J183718.2-072925 18 37 18.24 -07 29 25.80 6.84 XMM-NEWTON
9 4XMM J183645.8-072016 18 36 45.86 -07 20 16.44 6.97 XMM-NEWTON
4XMMs J183645.6-072016 18 36 45.65 -07 20 16.80 6.97 XMM-NEWTON
10 4XMMs J183700.2-072006 18 37 00.24 -07 20 06.72 7.21 XMM-NEWTON
4XMM J183659.8-071959 18 36 59.83 -07 19 59.52 7.29 XMM-NEWTON
11 4XMMs J183641.8-071943 18 36 41.86 -07 19 43.68 7.77 XMM-NEWTON
12 4XMM J183720.6-072305 18 37 20.69 -07 23 05.64 8.05 XMM-NEWTON
4XMMs J183720.7-072307 18 37 20.76 -07 23 07.08 8.06 XMM-NEWTON
13 4XMM J183712.5-072035 18 37 12.53 -07 20 35.16 8.17 XMM-NEWTON
4XMMs J183712.5-072034 18 37 12.60 -07 20 34.44 8.18 XMM-NEWTON
14 4XMMs J183718.5-073211 18 37 18.50 -07 32 11.40 8.27 XMM-NEWTON
4XMM J183718.8-073212 18 37 18.84 -07 32 12.12 8.34 XMM-NEWTON
15 4XMM J183619.2-073010 18 36 19.25 -07 30 10.44 8.79 XMM-NEWTON
16 Unknown 18 37 05.69 -07 35 13.56 8.82 EXOSAT
17 4XMM J183722.5-073144 18 37 22.56 -07 31 44.76 8.83 XMM-NEWTON
4XMMs J183722.7-073144 18 37 22.78 -07 31 44.40 8.87 XMM-NEWTON
18 4XMM J183723.2-072145 18 37 23.28 -07 21 45.36 9.31 XMM-NEWTON
4XMMs J183723.3-072144 18 37 23.33 -07 21 45.00 9.32 XMM-NEWTON
19 4XMM J183731.5-072819 18 37 31.51 -07 28 19.20 9.78 XMM-NEWTON
4XMMs J183731.5-072818 18 37 31.58 -07 28 18.84 9.80 XMM-NEWTON
20 4XMM J183724.6-073257 18 37 24.67 -07 32 57.48 9.95 XMM-NEWTON
4XMMs J183724.6-073257 18 37 24.67 -07 32 57.84 9.95 XMM-NEWTON
21 4XMM J183646.7-071700 18 36 46.75 -07 17 00.96 10.13 XMM-NEWTON
4XMMs J183646.7-071700 18 36 46.70 -07 17 00.96 10.13 XMM-NEWTON
22 4XMM J183649.1-071649 18 36 49.13 -07 16 49.44 10.26 XMM-NEWTON
4XMMs J183649.0-071649 18 36 49.06 -07 16 49.08 10.26 XMM-NEWTON
23 4XMM J183734.2-072752 18 37 34.27 -07 27 52.92 10.41 XMM-NEWTON
4XMMs J183734.2-072752 18 37 34.27 -07 27 52.20 10.42 XMM-NEWTON
24 4XMM J183643.7-071644 18 36 43.78 -07 16 44.76 10.52 XMM-NEWTON
4XMMs J183643.7-071644 18 36 43.75 -07 16 44.40 10.53 XMM-NEWTON
25 Sct X-1 18 36 28.90 -07 36 20.88 10.97 INTEGRAL
SCT X-1 18 36 28.82 -07 36 20.88 10.98
H 1833-076 18 36 28.61 -07 36 20.88 11.01
26 Sct X-1 18 36 30.00 -07 37 00.12 11.20 MGGAMMACAT
27 4XMM J183700.7-071531 18 37 00.77 -07 15 31.32 11.71 XMM-NEWTON
28 4XMMs J183738.4-073001 18 37 38.40 -07 30 01.08 11.79 XMM-NEWTON
4XMM J183738.5-072959 18 37 38.59 -07 30 00.00 11.83 XMM-NEWTON
29 4XMM J183739.4-073027 18 37 39.41 -07 30 27.36 12.14 XMM-NEWTON
4XMMs J183739.5-073027 18 37 39.55 -07 30 27.00 12.18 XMM-NEWTON
30 4XMMs J183718.6-071640 18 37 18.67 -07 16 40.80 12.25 XMM-NEWTON
4XMM J183718.7-071640 18 37 18.72 -07 16 40.08 12.26 XMM-NEWTON
31 4XMM J183740.4-072336 18 37 40.44 -07 23 36.96 12.40 XMM-NEWTON
4XMMs J183740.4-072336 18 37 40.46 -07 23 36.60 12.41 XMM-NEWTON
32 4XMMs J183737.3-072132 18 37 37.34 -07 21 32.04 12.43 XMM-NEWTON
33 4XMMs J183717.7-071556 18 37 17.76 -07 15 56.88 12.76 XMM-NEWTON
4XMM J183717.7-071557 18 37 17.78 -07 15 56.88 12.76 XMM-NEWTON
34 4XMMs J183737.9-072101 18 37 37.99 -07 21 01.80 12.81 XMM-NEWTON
4XMM J183737.9-072101 18 37 37.99 -07 21 01.80 12.81 XMM-NEWTON
35 4XMM J183606.5-073345 18 36 06.60 -07 33 45.36 13.19 XMM-NEWTON
36 4XMMs J183730.1-071738 18 37 30.17 -07 17 38.76 13.27 XMM-NEWTON
4XMM J183730.1-071737 18 37 30.19 -07 17 37.68 13.29 XMM-NEWTON
37 4XMMs J183734.6-071838 18 37 34.63 -07 18 38.16 13.43 XMM-NEWTON
4XMM J183734.6-071838 18 37 34.66 -07 18 38.52 13.44 XMM-NEWTON
38 4XMM J183731.8-071716 18 37 31.90 -07 17 16.44 13.84 XMM-NEWTON
4XMMs J183731.8-071716 18 37 31.87 -07 17 16.08 13.84 XMM-NEWTON
39 4XMMs J183735.1-071728 18 37 35.18 -07 17 28.68 14.29 XMM-NEWTON
4XMM J183735.2-071729 18 37 35.26 -07 17 29.04 14.30 XMM-NEWTON
40 4XMMs J183736.9-071712 18 37 36.91 -07 17 12.48 14.78 XMM-NEWTON
4XMM J183736.9-071711 18 37 36.91 -07 17 11.76 14.80 XMM-NEWTON
41 4XMM J183740.4-071706 18 37 40.46 -07 17 06.36 15.52 XMM-NEWTON
4XMMs J183740.5-071706 18 37 40.56 -07 17 07.08 15.53 XMM-NEWTON
42 4XMM J183738.8-071532 18 37 38.83 -07 15 32.04 16.28 XMM-NEWTON
4XMMs J183738.9-071531 18 37 38.90 -07 15 31.68 16.30 XMM-NEWTON

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 [WBH2005] G24.670-0.164 18 36 52.51 -07 25 22.08 1.68 WBHGP6CM
[WBH2005] G24.671-0.163 18 36 52.20 -07 25 18.12 1.75 WBHGP6CM
[WBH2005] G24.673-0.157 18 36 51.31 -07 25 03.00 2.01 WBHGP6CM
[WBH2005] G24.673-0.156 18 36 51.00 -07 25 00.84 2.07 WBHGP6CM
2 NVSS J183652-072453 18 36 52.01 -07 24 52.92 2.16 NVSS
[WBH2005] G24.677-0.157 18 36 51.60 -07 24 50.04 2.22 WBHGP6CM
MAGPIS Diffuse G24.6819-0.1625 18 36 50.81 -07 24 47.88 2.28 MAGPIS
[WBH2005] G24.677-0.155 18 36 51.19 -07 24 42.84 2.34 WBHGP6CM
3 BG 1834-07 18 36 50.40 -07 24 24.84 2.67 DIXON
SG 024.7-00.2 18 36 51.31 -07 24 20.16 2.72 DIXON
PMN J1836-0724 18 36 50.81 -07 24 03.96 3.01 PMN
4 GPA 024.68-0.13 18 36 47.11 -07 23 54.96 3.40 GPA
ADG024.7-00.1 18 36 47.40 -07 23 49.92 3.45 DIXON
5 GD 024.7-00.1 18 36 48.41 -07 23 20.04 3.85 DIXON
6 PCCS2 070 G024.59-00.20 18 36 51.60 -07 30 57.96 3.92 PCCS070GHZ
7 CGMW 3-2398 18 36 36.84 -07 29 20.40 4.49 CGMW
PGC 202661 18 36 36.79 -07 29 21.12 4.50 PGC2003
8 [WBH2005] G24.704-0.124 18 36 47.50 -07 22 28.92 4.73 WBHGP6CM
[WBH2005] G24.711-0.131 18 36 49.80 -07 22 18.12 4.78 WBHGP6CM
[WBH2005] G24.711-0.128 18 36 49.30 -07 22 13.08 4.90 WBHGP6CM
[WBH2005] G24.710-0.126 18 36 48.79 -07 22 12.00 4.92 WBHGP6CM
[WBH2005] G24.712-0.129 18 36 49.51 -07 22 09.84 4.93 WBHGP6CM
MAGPIS Diffuse G24.7167-0.0861 18 36 48.79 -07 22 10.92 4.94 MAGPIS
9 NVSS J183648-072203 18 36 48.91 -07 22 04.08 5.06 NVSS
10 [WBH2005] G24.712-0.237 18 37 12.79 -07 25 09.12 5.40 WBHGP6CM
11 NVSS J183646-072150 18 36 46.20 -07 21 51.12 5.42 NVSS
[WBH2005] G24.709-0.244 18 37 13.80 -07 25 30.00 5.54 WBHGP6CM
12 NVSS J183710-072355 18 37 10.90 -07 23 56.04 5.54 NVSS
13 MAGPIS Discrete G24.65005-0.07 18 36 31.80 -07 24 06.12 5.89 MAGPIS
[WBH2005] G24.744-0.201 18 37 08.59 -07 22 28.92 6.09 WBHGP6CM
14 NVSS J183647-073301 18 36 47.21 -07 33 02.16 6.12 NVSS
15 NVSS J183709-072240 18 37 09.70 -07 22 40.08 6.13 NVSS
MAGPIS Diffuse G24.7417-0.2083 18 37 09.41 -07 22 24.96 6.26 MAGPIS
[WBH2005] G24.749-0.201 18 37 09.10 -07 22 12.00 6.37 WBHGP6CM
[WBH2005] G24.748-0.206 18 37 10.20 -07 22 23.88 6.41 WBHGP6CM
[WBH2005] G24.748-0.208 18 37 10.51 -07 22 27.84 6.42 WBHGP6CM
16 MAGPIS Diffuse G24.5583-0.1333 18 36 32.40 -07 31 30.00 6.65 MAGPIS
MAGPIS Discrete G24.54063-0.13 18 36 32.30 -07 31 32.88 6.71 MAGPIS
MAGPIS Discrete G24.54591-0.24 18 36 55.90 -07 34 13.08 7.23 MAGPIS
17 NVSS J183654-073423 18 36 54.31 -07 34 23.16 7.36 NVSS
18 NVSS J183635-072059 18 36 35.21 -07 20 60.00 7.40 NVSS
19 SG 024.5-00.2 18 36 49.80 -07 34 37.92 7.62 DIXON
20 NVSS J183700-073443 18 37 00.79 -07 34 42.96 7.96 NVSS
21 GD 024.5-00.2 18 36 47.59 -07 35 02.04 8.07 DIXON
22 PMN J1836-0735 18 36 51.70 -07 35 20.04 8.29 PMN
23 MAGPIS Discrete G24.65892-0.31 18 37 23.90 -07 30 10.08 8.41 MAGPIS
[WBH2005] G24.659-0.316 18 37 23.90 -07 30 10.08 8.42 WBHGP6CM
24 W42 18 36 18.50 -07 27 28.08 8.42 DIXON
25 MAGPIS Discrete G24.74533-0.27 18 37 25.30 -07 24 30.96 8.54 MAGPIS
26 PCCS2 030 G024.61-00.04 18 36 18.60 -07 25 22.08 8.54 PCCS030GHZ
27 NVSS J183647-073538 18 36 47.40 -07 35 39.12 8.68 NVSS
MAGPIS Diffuse G24.5083-0.2333 18 36 46.80 -07 35 39.84 8.73 MAGPIS
[WBH2005] G24.507-0.222 18 36 46.80 -07 35 39.84 8.74 WBHGP20CM
[WBH2005] G24.508-0.224 18 36 47.30 -07 35 40.92 8.74 WBHGP6CM
[WBH2005] G24.507-0.222 18 36 46.80 -07 35 40.92 8.75 WBHGP6CM
28 MAGPIS Discrete G24.76216-0.26 18 37 24.50 -07 23 17.16 8.81 MAGPIS
29 PGCC G24.62-0.03 18 36 17.50 -07 24 16.92 9.09 PLANCKGCC
30 S 59 18 37 00.96 -07 35 60.00 9.20 HIIREGION
31 BD-07 4633 18 37 04.10 -07 36 11.52 9.60 ACRS
RX Sct 18 37 04.08 -07 36 11.88 9.60 GCVS
HIP 91275 18 37 04.08 -07 36 11.88 9.60 HIPPARCOS
PPM 201929 18 37 04.08 -07 36 11.88 9.60 PPM
RX Sct 18 37 04.08 -07 36 11.88 9.60 HIC
32 MAGPIS Discrete G24.48692-0.21 18 36 43.51 -07 36 37.08 9.82 MAGPIS
33 PCCS2 044 G024.60-00.02 18 36 12.50 -07 25 15.96 10.04 PCCS044GHZ
34 LMH 30 18 36 18.31 -07 21 28.08 10.12 DIXON
35 NVSS J183651-073726 18 36 51.91 -07 37 27.12 10.40 NVSS
36 PPM 707166 18 36 43.82 -07 16 44.04 10.53 PPM
37 LBN 80 18 36 42.65 -07 37 26.04 10.66 LBN
38 6I 33 18 37 30.48 -07 32 22.56 10.84 WACKERLING
39 MAGPIS Discrete G24.46476-0.19 18 36 37.01 -07 37 17.04 10.92 MAGPIS
40 NVSS J183609-073027 18 36 09.10 -07 30 28.08 11.25 NVSS
41 MAGPIS Discrete G24.45767-0.19 18 36 34.39 -07 37 24.96 11.29 MAGPIS
[WBH2005] G24.457-0.190 18 36 34.39 -07 37 26.04 11.31 WBHGP6CM
PMN J1836-0730 18 36 08.50 -07 30 34.92 11.44 PMN
[WBH2005] G24.500-0.041 18 36 06.91 -07 31 04.08 11.96 WBHGP6CM
[WBH2005] G24.502-0.037 18 36 06.50 -07 30 50.04 11.98 WBHGP6CM
42 [WBH2005] G24.446-0.168 18 36 28.39 -07 37 27.84 12.00 WBHGP6CM
[WBH2005] G24.501-0.037 18 36 06.41 -07 30 52.92 12.03 WBHGP20CM
43 MAGPIS Discrete G24.84053-0.22 18 37 24.19 -07 17 56.04 12.04 MAGPIS
[WBH2005] G24.502-0.036 18 36 06.10 -07 30 47.16 12.06 WBHGP6CM
[WBH2005] G24.498-0.039 18 36 06.41 -07 31 05.16 12.09 WBHGP6CM
44 NVSS J183606-073106 18 36 06.31 -07 31 05.88 12.14 NVSS
[WBH2005] G24.496-0.039 18 36 06.31 -07 31 12.00 12.16 WBHGP6CM
[WBH2005] G24.492-0.039 18 36 05.71 -07 31 23.16 12.35 WBHGP6CM
[WBH2005] G24.493-0.039 18 36 05.71 -07 31 22.08 12.36 WBHGP20CM
MAGPIS Discrete G24.49254-0.03 18 36 05.71 -07 31 23.16 12.37 MAGPIS
MAGPIS Diffuse G24.5000-0.0417 18 36 05.71 -07 31 23.88 12.37 MAGPIS
45 CGMW 3-2383 18 36 12.84 -07 34 52.32 12.54 CGMW
PGC 202647 18 36 12.79 -07 34 51.96 12.55 PGC2003
46 PMN J1837-0721 18 37 37.20 -07 21 11.88 12.55 PMN
47 NVSS J183739-071759 18 37 39.19 -07 17 58.92 14.72 NVSS
48 PGC 202645 18 36 06.19 -07 17 17.16 15.05 PGC2003
CGMW 3-2381 18 36 06.19 -07 17 16.44 15.06 CGMW

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