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 J1804.4-0852

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1804.4-0852 Swift-XRT detections in the field for 4FGL J1804.4-0852

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 18 04 24.85 -08 50 03.50 4.48 (1.08 ± 0.14) x 10-2 74 7.570 7.743
2 18 05 03.47 -08 58 20.42 5.76 (3.0 ± 0.7) x 10-3 21 4.092 4.148
3 18 04 18.61 -08 40 06.90 6.04 (2.8 ± 0.7) x 10-3 19 3.716 3.832
4 18 04 58.57 -08 44 17.40 5.53 (2.9 ± 0.8) x 10-3 20 3.533 3.749

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1804.4-0852 Swift-XRT image with known radio, optical and UV sources for 4FGL J1804.4-0852


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 J180435-085137 18 04 35.50 -08 51 37.08 1.84 NVSS
2 NVSS J180443-085405 18 04 43.61 -08 54 05.04 4.23 NVSS
3 NVSS J180433-084606 18 04 33.19 -08 46 05.88 6.18 NVSS
4 NVSS J180437-084622 18 04 37.80 -08 46 23.16 6.24 NVSS
5 BD-08 4551 18 04 02.52 -08 50 54.96 6.51 ACRS
PPM 201357 18 04 02.50 -08 50 55.32 6.51 PPM
SAO 142060 18 04 02.47 -08 50 54.60 6.52 SAO
6 NVSS J180426-090230 18 04 26.30 -09 02 30.84 10.36 NVSS
TGSSADR J180502.5-085835 18 05 02.50 -08 58 36.12 10.61 GMRTAS150M
7 NVSS J180504-085747 18 05 04.90 -08 57 47.16 10.63 NVSS
8 NVSS J180444-084215 18 04 44.30 -08 42 15.84 10.65 NVSS
9 NVSS J180503-085821 18 05 03.50 -08 58 22.08 10.65 NVSS
PMN J1805-0858 18 05 03.60 -08 58 19.92 10.67 PMN
TGSSADR J180504.7-085802 18 05 04.70 -08 58 03.00 10.73 GMRTAS150M
10 PPM 201369 18 04 58.56 -08 44 20.40 10.81 PPM
SAO 142069 18 04 58.56 -08 44 20.04 10.81 SAO
BD-08 4554 18 04 58.56 -08 44 20.04 10.82 ACRS
11 NVSS J180400-090125 18 04 00.50 -09 01 26.04 11.55 NVSS
[PME2013] J1805-0845 18 05 10.10 -08 45 54.00 12.08 AT2FGLUS
[SPT2015] ATCA J1805-0845 18 05 10.10 -08 45 54.00 12.08 FER2FUSRID
12 NVSS J180511-084554 18 05 11.11 -08 45 55.08 12.27 NVSS
13 CGMW 3-1403 18 03 44.62 -08 45 49.68 12.53 CGMW
PGC 201715 18 03 44.59 -08 45 50.04 12.53 PGC2003
14 NVSS J180340-090118 18 03 40.61 -09 01 18.84 14.93 NVSS

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