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.

1FGL J1844.1+1547

Field

Detected Excesses

Swift-XRT image of the field for 1FGL J1844.1+1547 Swift-XRT detections in the field for 1FGL J1844.1+1547

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 18 44 25.39 +15 46 43.87 3.83 (8.0 ± 0.5) x 10-2 249 16.080 15.000

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 44 20.56 +15 47 10.24 4.90 N/A 22 3.090 N/A

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 1FGL J1844.1+1547 Swift-XRT image with known radio, optical and UV sources for 1FGL J1844.1+1547

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1WGA J1844.4+1547 18 44 26.59 +15 47 01.32 4.41 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J184410+154932 18 44 10.99 +15 49 32.16 2.06 NVSS
[SPT2015] VLA J1844+1549 18 44 10.90 +15 49 33.96 2.07 FER2FUSRID
GB6 J1844+1547 18 44 25.39 +15 47 02.04 4.13 GB6
2 NVSS J184425+154646 18 44 25.30 +15 46 45.84 4.16 NVSS
[SPT2015] VLA J1844+1546 18 44 25.39 +15 46 45.84 4.16 FER2FUSRID
TGSSADR J184425.4+154647 18 44 25.39 +15 46 46.92 4.17 GMRTAS150M
1842+1544 18 44 25.80 +15 47 13.92 4.19 NORTH6CM
3 NVSS J184425+155112 18 44 25.70 +15 51 12.96 5.53 NVSS
TGSSADR J184426.0+155125 18 44 26.11 +15 51 24.84 5.73 GMRTAS150M
4 NVSS J184351+154253 18 43 51.70 +15 42 54.00 6.17 NVSS
5 NVSS J184416+154133 18 44 16.51 +15 41 34.08 6.32 NVSS
TGSSADR J184333.0+154725 18 43 33.00 +15 47 25.08 8.51 GMRTAS150M
6 NVSS J184332+154724 18 43 32.90 +15 47 24.00 8.54 NVSS
VLSSr J184332.6+154715 18 43 32.59 +15 47 15.00 8.62 VLSSR
7 NVSS J184401+153830 18 44 01.99 +15 38 30.12 9.20 NVSS
8 TXS 1841+157 18 43 29.59 +15 48 18.00 9.36 TEXAS
9 NVSS J184353+155625 18 43 53.50 +15 56 26.16 9.55 NVSS
10 NVSS J184411+155908 18 44 11.21 +15 59 08.16 11.58 NVSS
TGSSADR J184325.2+155245 18 43 25.20 +15 52 45.12 11.60 GMRTAS150M
11 NVSS J184325+155246 18 43 25.20 +15 52 45.84 11.62 NVSS
12 NVSS J184450+154024 18 44 50.40 +15 40 23.88 12.40 NVSS
13 NVSS J184442+153613 18 44 42.50 +15 36 12.96 14.02 NVSS

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