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 J1721.4-5253

Field

Detected Excesses

Swift-XRT image of the field for 3FGL J1721.4-5253 Swift-XRT detections in the field for 3FGL J1721.4-5253


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 17 21 28.90 -52 53 36.88 6.52 (5 ± 2) x 10-3 15 2.485 2.549
2 17 20 44.24 -52 46 42.64 6.12 (3.1 ± 1.4) x 10-3 10 2.374 2.189

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 3FGL J1721.4-5253 Swift-XRT image with known radio, optical and UV sources for 3FGL J1721.4-5253


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 PPM 772937 17 22 00.86 -52 51 26.64 5.83 PPM
2 CD-52 8084 17 20 53.23 -52 58 17.04 6.61 ACRS
PPM 345913 17 20 53.23 -52 58 17.40 6.61 PPM
SAO 244650 17 20 53.23 -52 58 17.76 6.62 SAO
3 MGPS J172113-524710 17 21 13.80 -52 47 09.96 6.88 MGPS2
4 CD-52 8104 17 22 20.95 -52 52 58.80 8.40 ACRS
PPM 345933 17 22 21.00 -52 52 58.08 8.41 PPM
SAO 244671 17 22 21.02 -52 52 58.80 8.41 SAO
HD 156792 17 22 21.02 -52 52 58.44 8.41 HIC
HIP 84994 17 22 21.07 -52 52 56.64 8.42 HIPPARCOS
5 269- 45 17 21 37.03 -53 02 55.68 9.28 NLTT
6 PGC 3079304 17 21 32.50 -53 04 23.88 10.64 PGC2003
7 MGPS J172119-524254 17 21 19.39 -52 42 55.08 10.94 MGPS2
8 ESO 171836-5243.7 17 22 36.24 -52 46 33.60 12.91 ESOUPPSALA
Wray 16-266 17 22 36.86 -52 46 30.36 13.02 PLNEBULAE
PGC 96597 17 22 34.61 -52 42 02.16 15.74 PGC2003
9 MGPS J172234-524201 17 22 34.80 -52 42 02.16 15.77 MGPS2

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