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 J1856.2+0749

Field

Detected Excesses

Swift-XRT image of the field for 4FGL J1856.2+0749 Swift-XRT detections in the field for 4FGL J1856.2+0749

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 18 55 20.17 +07 51 41.95 5.49 (8 ± 2) x 10-3 29 5.244 5.068

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1856.2+0749 Swift-XRT image with known radio, optical and UV sources for 4FGL J1856.2+0749


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 NVSS J185609+075015 18 56 09.60 +07 50 16.08 1.73 NVSS
2 LBN 110 18 56 24.91 +07 48 59.04 2.31 LBN
S 76 18 56 25.44 +07 48 46.80 2.52 HIIREGION
3 W45 18 56 06.91 +07 50 57.84 2.58 DIXON
4 TXS 1854+077 18 56 27.60 +07 50 53.88 2.89 TEXAS
NSV 24631 18 56 11.30 +07 53 16.08 3.53 GCVSNSVARS
1853+0749 18 56 12.50 +07 53 33.00 3.71 NORTH6CM
1853+0749 18 56 12.50 +07 53 33.00 3.71 NORTH20CM
CC 040+02.5 18 56 12.79 +07 53 39.12 3.79 DIXON
5 NVSS J185612+075340 18 56 12.10 +07 53 39.84 3.85 NVSS
GB6 J1856+0753 18 56 12.41 +07 53 44.16 3.89 GB6
6 PCCS2 044 G040.52+02.51 18 56 20.59 +07 53 48.12 3.96 PCCS044GHZ
7 PCCS2 070 G040.52+02.53 18 56 16.51 +07 54 02.88 4.07 PCCS070GHZ
ADG040.5+02.5 18 56 12.79 +07 53 57.84 4.10 DIXON
PCCS2 030 G040.53+02.51 18 56 21.10 +07 54 16.92 4.45 PCCS030GHZ
8 NVSS J185635+074906 18 56 35.50 +07 49 05.88 4.79 NVSS
9 TGSSADR J185606.8+075505 18 56 06.79 +07 55 05.16 5.64 GMRTAS150M
QORG J185605.6+075508 18 56 05.59 +07 55 08.04 5.82 QORGCAT
10 LHS 3422 18 56 11.83 +07 55 56.64 6.07 REVISEDLHS
11 GPA 040.56+2.49 18 56 29.71 +07 55 18.84 6.26 GPA
12 NVSS J185607+075552 18 56 07.39 +07 55 51.96 6.30 NVSS
NSV 24630 18 56 10.01 +07 56 08.16 6.36 GCVSNSVARS
571- 68 18 56 12.67 +07 56 16.08 6.36 NLTT
13 PPM 166831 18 56 09.96 +07 56 08.16 6.37 PPM
TGSSADR J185607.5+075556 18 56 07.51 +07 55 57.00 6.37 GMRTAS150M
HD 175677 18 56 09.96 +07 56 08.16 6.37 HIC
SAO 124069 18 56 09.94 +07 56 08.16 6.37 SAO
HIP 92943 18 56 09.91 +07 56 08.16 6.37 HIPPARCOS
V1665 Aql 18 56 09.91 +07 56 08.16 6.37 GCVS
BD+07 3898 18 56 09.94 +07 56 08.52 6.37 ACRS
14 NVSS J185644+074940 18 56 44.40 +07 49 40.08 6.91 NVSS
TGSSADR J185556.8+075601 18 55 56.81 +07 56 02.04 7.77 GMRTAS150M
15 NVSS J185556+075602 18 55 56.71 +07 56 02.04 7.79 NVSS
16 NVSS J185604+075730 18 56 04.70 +07 57 29.88 8.08 NVSS
17 NVSS J185612+075832 18 56 12.60 +07 58 32.88 8.62 NVSS
18 QORG J185635.9+075814 18 56 35.90 +07 58 14.16 9.55 QORGCAT
19 NVSS J185603+074031 18 56 03.79 +07 40 31.08 9.97 NVSS
20 BG 1853+07 18 56 12.50 +07 59 57.84 10.04 DIXON
21 NVSS J185655+075411 18 56 55.10 +07 54 11.16 10.45 NVSS
22 NVSS J185609+080021 18 56 09.19 +08 00 21.96 10.54 NVSS
23 NVSS J185653+075542 18 56 53.21 +07 55 42.96 10.74 NVSS
24 NVSS J185634+080047 18 56 34.20 +08 00 47.16 11.66 NVSS
25 TGSSADR J185703.9+075629 18 57 03.91 +07 56 30.12 13.43 GMRTAS150M

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