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 J1628.1-3344

Field

Detected Excesses
Swift-XRT image of the field for 3FGL J1628.1-3344 Swift-XRT detections in the field for 3FGL J1628.1-3344

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 16 27 25.77 -33 42 15.00 5.20 (8 ± 2) x 10-3 29 4.782 4.477
2 16 27 23.33 -33 46 23.04 5.53 (5 ± 2) x 10-3 20 3.651 3.281

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 16 28 43.27 -33 48 00.23 6.93 (3.1 ± 1.1) x 10-3 13 2.824 2.763
2 16 28 19.00 -33 47 28.73 5.64 (3.3 ± 1.3) x 10-3 19 2.555 2.529
3 16 28 34.04 -33 47 51.06 5.89 (3.1 ± 1.2) x 10-3 17 2.619 2.495
4 16 28 19.67 -33 47 33.60 5.70 (2.7 ± 1.2) x 10-3 17 2.515 2.282
5 16 28 19.00 -33 47 28.73 5.64 (2.5 ± 1.2) x 10-3 19 3.079 2.199
6 16 27 20.55 -33 46 12.13 5.49 (1.7 ± 1.0) x 10-3 16 2.276 1.606

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 3FGL J1628.1-3344 Swift-XRT image with known radio, optical and UV sources for 3FGL J1628.1-3344


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 J162819-334342 16 28 19.90 -33 43 42.96 2.88 NVSS
SUMSS J162820-334332 16 28 20.09 -33 43 32.88 2.97 SUMSS
TGSSADR J162732.1-334445 16 27 32.21 -33 44 45.96 7.15 GMRTAS150M
2 NVSS J162732-334448 16 27 32.11 -33 44 48.12 7.16 NVSS
SUMSS J162731-334440 16 27 31.90 -33 44 40.92 7.21 SUMSS
GLEAM J162731-334501 16 27 31.61 -33 45 02.16 7.27 GLEAMEGCAT
3 NVSS J162732-334725 16 27 32.21 -33 47 25.08 7.72 NVSS
4 NVSS J162812-333618 16 28 12.19 -33 36 18.00 8.28 NVSS
SUMSS J162812-333610 16 28 12.50 -33 36 11.16 8.41 SUMSS
5 NVSS J162729-335016 16 27 29.09 -33 50 16.08 9.68 NVSS
TGSSADR J162720.3-334808 16 27 20.40 -33 48 09.00 10.26 GMRTAS150M
6 NVSS J162720-334813 16 27 20.21 -33 48 12.96 10.32 NVSS
7 NVSS J162843-335152 16 28 43.61 -33 51 51.84 10.66 NVSS

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