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 J1827.5+1141

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1827.5+1141 Swift-XRT detections in the field for 4FGL J1827.5+1141

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 18 27 26.92 +11 51 09.97 6.52 (3.7 ± 1.2) x 10-3 12 2.912 3.019

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 27 12.84 +11 47 12.49 6.31 (3.1 ± 1.1) x 10-3 12 2.687 2.696
2 18 27 37.38 +11 56 24.72 6.78 (2.2 ± 0.9) x 10-3 12 2.277 2.374
3 18 28 10.24 +11 52 50.24 6.41 (1.7 ± 0.9) x 10-3 13 2.268 1.949

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1827.5+1141 Swift-XRT image with known radio, optical and UV sources for 4FGL J1827.5+1141


No known X-ray or gamma ray sources found.

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 WDS J18274+1141 AB 18 27 24.00 +11 40 59.88 1.69 WDS
WDS J18274+1141 BC 18 27 24.00 +11 40 59.88 1.69 WDS
2 PGC 2810113 18 27 19.20 +11 43 19.92 3.58 PGC2003
3 NVSS J182727+114507 18 27 28.01 +11 45 06.84 4.01 NVSS
4 NVSS J182745+114434 18 27 45.29 +11 44 34.08 4.91 NVSS
5 PGC 2810195 18 27 55.20 +11 41 22.92 5.96 PGC2003
6 PGC 2810166 18 27 40.70 +11 35 17.88 6.35 PGC2003
7 BD+11 3467 18 27 16.68 +11 35 15.36 6.86 ACRS
PPM 134740 18 27 16.68 +11 35 15.00 6.87 PPM
SAO 103729 18 27 16.61 +11 35 13.56 6.90 SAO
8 NVSS J182721+114840 18 27 21.70 +11 48 41.04 7.83 NVSS
9 PGC 2810071 18 26 58.39 +11 44 45.96 8.72 PGC2003
10 NVSS J182724+115007 18 27 24.41 +11 50 08.16 9.09 NVSS
[SPT2015] VLA J1827+1150 18 27 24.19 +11 50 08.88 9.12 FER2FUSRID
11 PPM 134761 18 28 08.62 +11 42 26.64 9.33 PPM
BD+11 3471 18 28 08.62 +11 42 27.36 9.33 ACRS
12 NVSS J182704+113342 18 27 04.01 +11 33 42.84 9.95 NVSS
13 V2809 Oph 18 27 49.44 +11 51 49.32 11.57 GCVS
14 NVSS J182817+113909 18 28 17.50 +11 39 09.00 11.59 NVSS
15 PGC 2810229 18 28 10.39 +11 34 22.08 11.84 PGC2003
16 NVSS J182815+113625 18 28 15.70 +11 36 25.92 11.96 NVSS
17 PGC 2810028 18 26 42.00 +11 39 19.08 12.11 PGC2003
18 BD+11 3465 18 26 53.57 +11 31 17.76 13.46 ACRS
PPM 134731 18 26 53.54 +11 31 17.40 13.47 PPM
SAO 103721 18 26 53.47 +11 31 16.32 13.49 SAO
19 PGC 2810033 18 26 45.10 +11 50 52.08 14.81 PGC2003

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