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 J1854.3-3640

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1854.3-3640 Swift-XRT detections in the field for 4FGL J1854.3-3640


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 53 45.22 -36 44 13.02 5.28 (2.5 ± 0.9) x 10-3 18 3.068 2.907
2 18 54 08.68 -36 39 27.22 5.96 (2.2 ± 0.8) x 10-3 18 2.800 2.774
3 18 53 52.93 -36 42 19.62 5.59 (2.3 ± 0.9) x 10-3 18 2.918 2.651

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1854.3-3640 Swift-XRT image with known radio, optical and UV sources for 4FGL J1854.3-3640


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 PGC 209069 18 54 08.30 -36 41 26.88 3.13 PGC2003
2 PPM 750184 18 54 08.66 -36 39 24.12 3.29 PPM
HIP 92759 18 54 08.66 -36 39 23.04 3.30 HIPPARCOS
CD -36 13108 18 54 08.64 -36 39 21.60 3.32 HIC
3 PGC 209116 18 54 40.30 -36 41 38.04 3.46 PGC2003
4 CGMW 4-3710 18 54 29.11 -36 44 08.88 3.54 CGMW
PGC 209099 18 54 29.11 -36 44 08.88 3.54 PGC2003
5 PGC 209121 18 54 42.50 -36 39 42.12 3.95 PGC2003
6 PGC 209079 18 54 16.80 -36 36 24.12 4.59 PGC2003
7 PGC 209078 18 54 16.70 -36 45 20.16 4.75 PGC2003
PGC 209080 18 54 16.99 -36 45 38.88 5.04 PGC2003
8 V465 Sgr 18 54 54.43 -36 42 41.40 6.47 GCVS
9 CGMW 4-3736 18 54 43.49 -36 45 56.88 6.52 CGMW
10 PGC 209063 18 54 06.00 -36 34 50.16 6.92 PGC2003
11 PPM 750194 18 54 55.20 -36 37 53.40 6.98 PPM
SUMSS J185402-363454 18 54 02.50 -36 34 54.84 7.24 SUMSS
12 NVSS J185402-363439 18 54 02.81 -36 34 39.00 7.42 NVSS
SUMSS J185438-363330 18 54 38.11 -36 33 30.96 7.84 SUMSS
TGSSADR J185438.2-363330 18 54 38.21 -36 33 30.96 7.85 GMRTAS150M
13 NVSS J185438-363331 18 54 38.40 -36 33 30.96 7.85 NVSS
GLEAM J185438-363323 18 54 37.99 -36 33 24.12 7.94 GLEAMEGCAT
14 CGMW 4-3661 18 54 03.41 -36 33 36.00 8.25 CGMW
15 PPM 750179 18 53 46.92 -36 36 14.40 8.65 PPM
16 PGC 209040 18 53 50.21 -36 34 50.16 8.96 PGC2003
17 PGC 209137 18 54 50.21 -36 48 19.08 9.23 PGC2003
18 PGC 209044 18 53 55.39 -36 48 33.12 9.60 PGC2003
19 CE Sgr 18 54 26.57 -36 30 49.68 9.98 GCVS
20 NVSS J185510-363608 18 55 10.61 -36 36 07.92 10.52 NVSS
21 PGC 209192 18 55 19.80 -36 42 43.92 11.44 PGC2003
22 PGC 209072 18 54 11.11 -36 52 05.16 11.57 PGC2003
CGMW 4-3682 18 54 11.11 -36 52 05.16 11.57 CGMW
23 PGC 208998 18 53 25.51 -36 39 54.00 11.68 PGC2003
24 NVSS J185350-365103 18 53 50.11 -36 51 02.88 12.26 NVSS
25 PPM 298315 18 55 00.53 -36 31 01.56 12.26 PPM
Rns 48980 18 55 00.55 -36 31 01.20 12.27 CPSTARS
CD-3613120 18 55 00.55 -36 31 01.20 12.27 ACRS
SAO 210707 18 55 00.48 -36 31 00.12 12.28 SAO
26 NVSS J185509-363227 18 55 09.41 -36 32 26.88 12.41 NVSS
27 CW CRA 18 54 45.38 -36 52 34.32 12.57 WOODEBCAT
28 PGC 209031 18 53 45.79 -36 29 26.88 13.64 PGC2003
29 PGC 209010 18 53 31.80 -36 51 00.00 14.55 PGC2003
CGMW 4-3619 18 53 31.80 -36 51 00.00 14.55 CGMW
30 NVSS J185335-365148 18 53 35.59 -36 51 47.88 14.61 NVSS
SUMSS J185335-365156 18 53 35.59 -36 51 56.88 14.72 SUMSS

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