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 25.57 -33 42 12.78 6.21 (5 ± 2) x 10-3 14 3.151 3.044

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 18.81 -33 47 29.07 5.70 (6 ± 2) x 10-3 18 3.258 2.901
2 16 28 43.08 -33 48 00.50 6.93 (4 ± 2) x 10-3 13 2.884 2.763
3 16 28 17.36 -33 47 29.39 5.89 (5 ± 2) x 10-3 25 3.103 2.592
4 16 28 19.52 -33 47 32.24 5.76 (4 ± 2) x 10-3 18 2.884 2.477
5 16 28 34.42 -33 47 53.33 6.12 (4 ± 2) x 10-3 14 2.693 2.413
6 16 27 19.76 -33 46 13.12 6.65 (4 ± 2) x 10-3 7 2.386 2.272
7 16 28 03.34 -33 47 11.00 6.41 (4 ± 2) x 10-3 16 2.432 2.229
8 16 27 40.56 -33 46 43.81 7.09 (2.8 ± 1.4) x 10-3 11 2.279 1.966
9 16 27 23.74 -33 46 22.81 6.31 (3 ± 2) x 10-3 6 2.169 1.872
10 16 28 35.69 -33 47 51.04 6.04 (2.2 ± 1.3) x 10-3 17 2.871 1.666
11 16 27 34.50 -33 46 32.31 6.41 (1.2 ± 1.1) x 10-3 11 2.884 1.065

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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