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 J1528.1-2904

Field

Detected Excesses
Swift-XRT image of the field for 3FGL J1528.1-2904 Swift-XRT detections in the field for 3FGL J1528.1-2904

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 15 28 18.06 -29 02 58.27 4.61 (1.5 ± 0.2) x 10-2 62 7.207 6.883

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 15 28 15.95 -28 58 30.13 5.24 (3.2 ± 1.1) x 10-3 29 2.959 2.928
2 15 28 15.92 -28 58 29.86 5.24 (3.5 ± 1.3) x 10-3 29 2.950 2.665
3 15 27 22.90 -28 58 57.39 5.70 (3.1 ± 1.3) x 10-3 13 2.688 2.442
4 15 28 18.10 -28 54 42.60 5.76 (1.7 ± 0.9) x 10-3 11 2.264 1.972

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 3FGL J1528.1-2904 Swift-XRT image with known radio, optical and UV sources for 3FGL J1528.1-2904


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 SPASS J152814-285902 15 28 14.40 -28 59 02.04 5.18 SPASS2P3GH
TGSSADR J152814.3-285854 15 28 14.30 -28 58 54.12 5.30 GMRTAS150M
TXS 1525-288 15 28 16.01 -28 58 28.92 5.81 TEXAS
1525-288 15 28 16.20 -28 58 23.88 5.90 MRC
2 NVSS J152816-285823 15 28 16.30 -28 58 23.16 5.92 NVSS
PMN J1528-2858 15 28 16.70 -28 58 23.88 5.93 PMN
GLEAM J152816-285818 15 28 16.51 -28 58 18.12 6.00 GLEAMEGCAT
TGSSADR J152816.7-285818 15 28 16.80 -28 58 18.84 6.02 GMRTAS150M
3 NVSS J152830-290856 15 28 30.91 -29 08 57.12 6.92 NVSS
GLEAM J152832-290847 15 28 32.30 -29 08 47.04 7.02 GLEAMEGCAT
4 NVSS J152830-285845 15 28 30.50 -28 58 45.84 7.14 NVSS
5 NVSS J152748-291134 15 27 48.50 -29 11 34.08 8.70 NVSS
GLEAM J152829-291217 15 28 29.50 -29 12 18.00 9.43 GLEAMEGCAT
6 NVSS J152828-291226 15 28 28.70 -29 12 25.92 9.47 NVSS
7 NVSS J152837-291237 15 28 37.90 -29 12 38.16 10.71 NVSS
GLEAM J152722-285835 15 27 22.80 -28 58 35.04 11.39 GLEAMEGCAT
8 NVSS J152721-285838 15 27 21.89 -28 58 37.92 11.55 NVSS
9 DGVW074 15 28 38.59 -28 52 19.92 13.44 DIXON

Penn State University Goddard Space Flight Center Swift