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 J1823.3-1340

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1823.3-1340 Swift-XRT detections in the field for 4FGL J1823.3-1340

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 18 23 25.53 -13 37 55.25 4.31 (5.9 ± 1.0) x 10-3 70 6.297 6.112
2 18 23 17.56 -13 35 43.64 4.67 (3.2 ± 0.7) x 10-3 43 4.059 4.496
3 18 22 58.27 -13 53 18.55 6.12 (1.5 ± 0.5) x 10-3 16 3.296 3.405
4 18 23 43.21 -13 49 44.22 5.82 (1.5 ± 0.5) x 10-3 16 3.210 3.062

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 23 00.25 -13 51 44.08 6.93 (1.1 ± 0.4) x 10-3 10 2.525 2.850
2 18 23 07.26 -13 31 58.10 4.83 (1.5 ± 0.6) x 10-3 34 3.220 2.776
3 18 23 17.94 -13 42 51.26 4.88 (1.5 ± 0.6) x 10-3 33 2.943 2.688
4 18 23 21.92 -13 46 36.73 5.44 (1.4 ± 0.5) x 10-3 20 2.683 2.604
5 18 24 04.24 -13 58 40.18 7.48 (9 ± 3) x 10-4 9 2.659 2.546
6 18 23 07.26 -13 31 58.10 4.83 (1.3 ± 0.6) x 10-3 35 2.691 2.322
7 18 23 07.87 -13 30 46.12 4.80 (1.1 ± 0.5) x 10-3 23 3.220 2.020

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1823.3-1340 Swift-XRT image with known radio, optical and UV sources for 4FGL J1823.3-1340

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 4XMM J182319.8-134007 18 23 19.85 -13 40 08.04 0.22 XMM-NEWTON
2 4XMM J182322.9-134005 18 23 22.99 -13 40 05.52 0.55 XMM-NEWTON
3 4XMM J182326.4-134022 18 23 26.45 -13 40 22.44 1.43 XMM-NEWTON
4 4XMM J182325.2-133750 18 23 25.27 -13 37 50.16 2.48 XMM-NEWTON
5 4XMM J182312.2-133752 18 23 12.31 -13 37 52.68 2.99 XMM-NEWTON
6 4XMM J182335.5-134006 18 23 35.59 -13 40 06.24 3.62 XMM-NEWTON
7 4XMM J182318.0-134419 18 23 18.05 -13 44 19.32 4.31 XMM-NEWTON
8 4XMM J182309.5-133641 18 23 09.55 -13 36 41.76 4.32 XMM-NEWTON
9 4XMM J182305.8-134232 18 23 05.90 -13 42 32.40 4.37 XMM-NEWTON
10 4XMM J182334.3-134304 18 23 34.32 -13 43 04.44 4.48 XMM-NEWTON
11 4XMM J182307.8-133618 18 23 07.80 -13 36 18.72 4.88 XMM-NEWTON
12 4XMM J182300.4-133952 18 23 00.43 -13 39 52.20 4.93 XMM-NEWTON
13 4XMM J182306.3-134335 18 23 06.34 -13 43 35.40 4.97 XMM-NEWTON
14 4XMM J182254.9-133820 18 22 54.98 -13 38 20.76 6.48 XMM-NEWTON
15 4XMM J182332.2-134601 18 23 32.21 -13 46 01.56 6.59 XMM-NEWTON
16 4XMM J182321.3-134642 18 23 21.34 -13 46 42.24 6.65 XMM-NEWTON
17 4XMM J182345.9-134239 18 23 45.94 -13 42 39.60 6.66 XMM-NEWTON
18 4XMM J182255.1-134230 18 22 55.10 -13 42 30.96 6.69 XMM-NEWTON
19 4XMM J182329.8-134629 18 23 29.86 -13 46 29.28 6.80 XMM-NEWTON
20 4XMM J182332.5-134635 18 23 32.57 -13 46 35.76 7.14 XMM-NEWTON
21 4XMM J182348.4-133738 18 23 48.41 -13 37 39.00 7.15 XMM-NEWTON
22 4XMM J182251.1-134025 18 22 51.14 -13 40 25.32 7.19 XMM-NEWTON
23 4XMM J182253.1-133648 18 22 53.18 -13 36 48.96 7.43 XMM-NEWTON
24 4XMM J182346.4-134505 18 23 46.44 -13 45 05.40 8.02 XMM-NEWTON
25 4XMM J182317.1-133121 18 23 17.16 -13 31 22.08 8.73 XMM-NEWTON
26 1WGA J1823.1-1331 18 23 08.21 -13 31 50.16 8.77 ROSAT
27 4XMM J182347.8-133413 18 23 47.81 -13 34 13.44 8.80 XMM-NEWTON
28 4XMM J182249.6-134434 18 22 49.63 -13 44 34.80 8.80 XMM-NEWTON
29 4XMM J182257.0-134644 18 22 57.07 -13 46 44.76 8.82 XMM-NEWTON
30 4XMM J182338.8-134804 18 23 38.88 -13 48 03.96 9.15 XMM-NEWTON
31 4XMM J182250.0-134522 18 22 50.06 -13 45 23.04 9.15 XMM-NEWTON
32 2CXO J182306.5-134836 18 23 06.58 -13 48 36.72 9.22 CHANDRA
33 4XMM J182245.1-133650 18 22 45.14 -13 36 50.04 9.22 XMM-NEWTON
34 4XMM J182352.7-133450 18 23 52.75 -13 34 50.52 9.37 XMM-NEWTON
4XMM J182249.7-134550 18 22 49.75 -13 45 50.76 9.49 XMM-NEWTON
35 4XMM J182323.4-134934 18 23 23.42 -13 49 34.68 9.54 XMM-NEWTON
36 4XMM J182331.1-133049 18 23 31.15 -13 30 49.68 9.57 XMM-NEWTON
37 4XMM J182307.3-133047 18 23 07.39 -13 30 47.16 9.82 XMM-NEWTON
38 2CXO J182248.2-134618 18 22 48.24 -13 46 18.84 10.07 CHANDRA
39 4XMM J182314.0-132933 18 23 14.04 -13 29 33.36 10.63 XMM-NEWTON
40 4XMM J182402.8-134313 18 24 02.83 -13 43 13.80 10.72 XMM-NEWTON
41 4XMM J182236.6-134125 18 22 36.62 -13 41 25.44 10.79 XMM-NEWTON
42 4XMM J182241.2-134506 18 22 41.23 -13 45 06.48 10.84 XMM-NEWTON
43 4XMM J182342.8-134947 18 23 42.89 -13 49 46.92 11.12 XMM-NEWTON
44 4XMM J182304.4-135034 18 23 04.49 -13 50 34.80 11.24 XMM-NEWTON
45 4XMM J182352.7-135038 18 23 52.75 -13 50 38.04 13.13 XMM-NEWTON
46 4XMM J182232.5-134855 18 22 32.52 -13 48 55.08 14.68 XMM-NEWTON

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 [WBH2005] G17.567-0.130 18 23 20.69 -13 42 03.96 2.01 WBHGP6CM
MAGPIS Discrete G17.56666-0.13 18 23 20.59 -13 42 03.96 2.02 MAGPIS
2 MAGPIS Diffuse G17.5167-0.1125 18 23 14.90 -13 41 40.92 2.16 MAGPIS
MAGPIS Discrete G17.56129-0.10 18 23 14.90 -13 41 42.00 2.17 MAGPIS
3 QORG J182307.9-133844 18 23 07.90 -13 38 44.16 3.38 QORGCAT
4 169010 18 23 16.39 -13 43 24.60 3.51 WACKERLING
WR 114 18 23 16.39 -13 43 25.68 3.53 WRCAT
5 [PME2013] J1823-1340 18 23 06.00 -13 40 00.84 3.58 AT2FGLUS
6 NVSS J182321-133628 18 23 22.01 -13 36 28.08 3.60 NVSS
[SPT2015] ATCA J1823-1340 18 23 05.71 -13 40 03.00 3.64 FER2FUSRID
7 NSV 10721 18 23 17.59 -13 35 39.84 4.45 GCVSNSVARS
PPM 234465 18 23 17.59 -13 35 39.48 4.46 PPM
HIP 90107 18 23 17.57 -13 35 39.48 4.46 HIPPARCOS
BD-13 4958 18 23 17.59 -13 35 39.12 4.47 ACRS
NSV 10721 18 23 17.59 -13 35 39.12 4.47 HIC
SAO 161418 18 23 17.62 -13 35 38.40 4.48 SAO
8 NVSS J182259-133917 18 22 59.71 -13 39 16.92 5.16 NVSS
QORG J182301.6-133734 18 23 01.61 -13 37 33.96 5.27 QORGCAT
9 NVSS J182301-133732 18 23 01.61 -13 37 32.16 5.28 NVSS
QORG J182342.9-134328 18 23 42.91 -13 43 27.84 6.38 QORGCAT
10 NVSS J182342-134326 18 23 43.01 -13 43 27.12 6.39 NVSS
SNR G017.4-00.1 18 23 07.99 -13 46 00.12 6.70 SNRGREEN
SNR G017.4-00.1 18 23 07.99 -13 46 00.12 6.70 SNRGREEN
11 NVSS J182259-133536 18 22 59.21 -13 35 35.88 6.87 NVSS
12 NVSS J182340-134509 18 23 40.51 -13 45 10.08 7.00 NVSS
QORG J182340.3-134515 18 23 40.30 -13 45 15.12 7.04 QORGCAT
[WBH2005] G17.669-0.214 18 23 50.69 -13 39 01.08 7.36 WBHGP6CM
MAGPIS Discrete G17.66896-0.21 18 23 50.69 -13 39 00.00 7.37 MAGPIS
13 NVSS J182350-133859 18 23 51.00 -13 39 00.00 7.42 NVSS
14 PSR J1823-1347 18 23 24.31 -13 47 53.88 7.89 ATNFPULSAR
PSR J1823-1347 18 23 24.31 -13 47 53.88 7.89 PMPULSAR
15 NVSS J182303-133258 18 23 03.79 -13 32 58.92 8.19 NVSS
16 PPM 234446 18 22 46.34 -13 40 48.72 8.38 PPM
QORG J182303.5-134720 18 23 03.50 -13 47 20.04 8.39 QORGCAT
17 NVSS J182303-134723 18 23 03.29 -13 47 22.92 8.46 NVSS
18 QORG J182259.8-133317 18 22 59.81 -13 33 16.92 8.47 QORGCAT
19 NVSS J182245-133823 18 22 45.50 -13 38 22.92 8.71 NVSS
20 NVSS J182255-133339 18 22 55.10 -13 33 38.88 8.93 NVSS
21 PMN J1822-1347 18 22 57.10 -13 47 00.96 9.02 PMN
22 MAGPIS Discrete G17.46600-0.19 18 23 22.30 -13 49 08.04 9.08 MAGPIS
23 NVSS J182339-134756 18 23 39.60 -13 47 56.04 9.12 NVSS
24 NVSS J182349-134554 18 23 49.70 -13 45 54.00 9.14 NVSS
25 NVSS J182254-134652 18 22 54.79 -13 46 53.04 9.29 NVSS
26 MAGPIS Diffuse G17.4458-0.0750 18 22 52.10 -13 46 24.96 9.41 MAGPIS
27 NVSS J182341-133158 18 23 41.40 -13 31 59.16 9.51 NVSS
MAGPIS Diffuse G17.6250+0.0472 18 22 49.20 -13 33 55.08 9.82 MAGPIS
28 MAGPIS Discrete G17.54319+0.04 18 22 40.61 -13 38 30.12 9.86 MAGPIS
29 NVSS J182248-133402 18 22 48.31 -13 34 01.92 9.91 NVSS
30 MAGPIS Discrete G17.44563-0.04 18 22 47.50 -13 46 00.84 10.03 MAGPIS
31 NVSS J182342-133103 18 23 42.10 -13 31 03.00 10.40 NVSS
MAGPIS Discrete G17.72476-0.24 18 24 03.41 -13 36 51.12 10.86 MAGPIS
[WBH2005] G17.725-0.243 18 24 03.41 -13 36 51.12 10.87 WBHGP6CM
32 PPM 719237 18 23 38.59 -13 50 01.68 10.88 PPM
33 NVSS J182403-133649 18 24 03.70 -13 36 48.96 10.93 NVSS
[WBH2005] G17.725-0.244 18 24 03.79 -13 36 54.00 10.93 WBHGP6CM
34 NVSS J182351-134815 18 23 51.70 -13 48 15.12 11.13 NVSS
35 BD-13 4961 18 23 49.44 -13 31 23.16 11.13 ACRS
PPM 234476 18 23 49.46 -13 31 23.16 11.14 PPM
SAO 161423 18 23 49.46 -13 31 21.72 11.15 SAO
36 NVSS J182400-134555 18 24 00.41 -13 45 55.08 11.28 NVSS
37 MAGPIS Discrete G17.76269-0.22 18 24 04.30 -13 34 23.16 12.02 MAGPIS
38 NVSS J182237-133354 18 22 37.30 -13 33 54.00 12.21 NVSS
39 NVSS J182234-133452 18 22 34.61 -13 34 53.04 12.35 NVSS
MAGPIS Diffuse G17.5861+0.0917 18 22 34.20 -13 34 51.96 12.43 MAGPIS
40 NVSS J182300-135132 18 23 00.41 -13 51 32.04 12.49 NVSS
MAGPIS Discrete G17.72115+0.05 18 22 58.30 -13 28 41.88 12.60 MAGPIS
[WBH2005] G17.722+0.054 18 22 58.51 -13 28 41.16 12.60 WBHGP6CM
41 NVSS J182258-132833 18 22 58.80 -13 28 33.96 12.66 NVSS
42 NVSS J182407-133428 18 24 07.70 -13 34 28.92 12.71 NVSS
43 NVSS J182346-135112 18 23 46.01 -13 51 11.88 12.73 NVSS
44 PMN J1822-1333 18 22 35.40 -13 33 24.84 12.86 PMN
45 NVSS J182244-134929 18 22 44.30 -13 49 28.92 12.94 NVSS
46 NVSS J182240-134921 18 22 40.80 -13 49 22.08 13.44 NVSS
47 NVSS J182246-135141 18 22 46.61 -13 51 41.04 14.27 NVSS
48 [WBH2005] G17.666+0.113 18 22 39.19 -13 29 57.12 14.28 WBHGP6CM
MAGPIS Discrete G17.66649+0.11 18 22 39.19 -13 29 57.12 14.28 MAGPIS
[WBH2005] G17.667+0.113 18 22 39.19 -13 29 56.04 14.29 WBHGP20CM
MAGPIS Discrete G17.35719-0.08 18 22 46.61 -13 51 55.08 14.46 MAGPIS
[WBH2005] G17.368-0.038 18 22 37.39 -13 50 00.96 14.49 WBHGP6CM
[WBH2005] G17.366-0.037 18 22 37.01 -13 50 03.84 14.59 WBHGP6CM
[WBH2005] G17.364-0.038 18 22 37.10 -13 50 12.12 14.66 WBHGP6CM
49 NVSS J182237-135014 18 22 37.10 -13 50 15.00 14.69 NVSS
MAGPIS Diffuse G17.3625-0.0375 18 22 36.70 -13 50 12.12 14.74 MAGPIS
[WBH2005] G17.362-0.041 18 22 37.30 -13 50 24.00 14.76 WBHGP6CM
[WBH2005] G17.361-0.038 18 22 36.70 -13 50 21.84 14.84 WBHGP6CM
50 MAGPIS Discrete G17.84029-0.17 18 24 02.40 -13 28 51.96 15.09 MAGPIS
[WBH2005] G17.840-0.177 18 24 02.40 -13 28 51.96 15.10 WBHGP6CM
BD-13 4963 18 24 01.99 -13 28 40.08 15.18 ACRS
PPM 234479 18 24 01.99 -13 28 40.08 15.18 PPM
SAO 161427 18 24 02.16 -13 28 39.36 15.21 SAO

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