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.

3FGL J1744.7-2252

Field

Detected Excesses
Swift-XRT image of the field for 3FGL J1744.7-2252 Swift-XRT detections in the field for 3FGL J1744.7-2252

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 17 45 11.98 -22 54 55.73 3.98 (2.8 ± 0.3) x 10-2 134 10.100 9.894
2 17 45 27.95 -23 05 22.63 4.13 (1.3 ± 0.2) x 10-2 68 6.959 6.250

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 17 44 43.62 -23 05 04.42 5.20 (3.0 ± 1.0) x 10-3 15 2.649 2.912
2 17 45 03.05 -22 53 07.95 4.80 (2.4 ± 1.0) x 10-3 35 2.865 2.322
3 17 44 38.29 -23 08 03.33 4.80 (2.1 ± 1.0) x 10-3 19 2.475 2.164

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 3FGL J1744.7-2252 Swift-XRT image with known radio, optical and UV sources for 3FGL J1744.7-2252

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 XMMSL2 J174511.5-225457 17 45 11.59 -22 54 57.24 7.07 XMM-NEWTON
2 XMMSL2 J174523.7-224345 17 45 23.86 -22 43 45.12 12.56 XMM-NEWTON

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NN 17 44 35.71 -22 56 46.32 4.93 ACRS
PPM 733456 17 44 35.69 -22 56 46.68 4.94 PPM
2 SAO 185692 17 45 04.70 -22 53 19.68 5.04 SAO
PPM 267226 17 45 04.78 -22 53 20.76 5.06 PPM
BD-22 4407 17 45 04.78 -22 53 20.76 5.06 ACRS
TGSSADR J174427.9-225645 17 44 27.91 -22 56 44.88 5.81 GMRTAS150M
3 NVSS J174427-225647 17 44 28.01 -22 56 47.04 5.83 NVSS
4 SAO 185677 17 44 23.93 -22 55 59.16 5.89 SAO
PPM 267213 17 44 23.98 -22 56 00.24 5.89 PPM
5 NVSS J174437-224512 17 44 37.51 -22 45 12.96 7.09 NVSS
6 NVSS J174501-225844 17 45 01.80 -22 58 44.04 7.82 NVSS
7 SAO 185672 17 44 07.92 -22 55 39.36 8.89 SAO
PPM 267206 17 44 07.90 -22 55 40.44 8.90 PPM
8 NSV 23612 17 44 00.91 -22 55 15.96 10.27 GCVSNSVARS
9 BD-22 4399 17 43 56.52 -22 45 43.20 12.59 ACRS
HD 160989 17 43 56.52 -22 45 42.84 12.59 HIC
PPM 267198 17 43 56.52 -22 45 42.84 12.59 PPM
HIP 86778 17 43 56.50 -22 45 42.84 12.59 HIPPARCOS
SAO 185667 17 43 56.54 -22 45 41.04 12.60 SAO
10 SAO 185669 17 44 00.34 -23 02 48.84 14.55 SAO
PPM 267201 17 44 00.19 -23 02 50.64 14.59 PPM

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