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.

4FGL J1528.4-6729

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1528.4-6729 Swift-XRT detections in the field for 4FGL J1528.4-6729

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 15 28 05.07 -67 37 28.15 5.31 (9 ± 2) x 10-3 32 4.909 4.944
2 15 27 27.78 -67 25 22.36 5.76 (4.3 ± 1.2) x 10-3 19 3.588 3.543

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 26 42.13 -67 22 26.80 6.93 (2.4 ± 0.9) x 10-3 10 2.464 2.681
2 15 28 40.08 -67 36 25.71 6.52 (2.4 ± 0.9) x 10-3 12 2.643 2.639
3 15 29 08.15 -67 22 16.93 5.96 (2.5 ± 1.1) x 10-3 10 2.448 2.319

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1528.4-6729 Swift-XRT image with known radio, optical and UV sources for 4FGL J1528.4-6729

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1RXS J152815.0-673003 15 28 15.00 -67 30 03.60 1.48 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 MGPS J152819-673002 15 28 19.70 -67 30 02.16 1.07 MGPS2
2 PMN J1528-6731 15 28 10.39 -67 31 00.84 2.37 PMN
3 MGPS J152736-673434 15 27 36.50 -67 34 35.04 7.17 MGPS2
4 HIP 75865 15 29 48.31 -67 29 16.08 7.58 HIPPARCOS
CPC 21 3502 15 29 48.31 -67 29 16.08 7.58 HIC
SAO 253183 15 29 51.48 -67 29 07.44 7.89 SAO
CD-67 1760 15 29 51.48 -67 29 06.36 7.89 ACRS
HD 137384 15 29 51.50 -67 29 07.44 7.89 HIC
PPM 361478 15 29 51.53 -67 29 06.00 7.89 PPM
HIP 75873 15 29 51.55 -67 29 06.00 7.89 HIPPARCOS
5 WDS J15299-6729 15 29 54.00 -67 28 59.88 8.13 WDS
6 MGPS J152954-672754 15 29 54.10 -67 27 54.00 8.28 MGPS2
7 MGPS J153017-673019 15 30 17.40 -67 30 19.08 10.39 MGPS2
8 CD-66 1747 15 26 31.01 -67 24 18.72 12.45 ACRS
PPM 780478 15 26 30.96 -67 24 18.36 12.45 PPM
9 MGPS J153020-672136 15 30 20.21 -67 21 36.00 13.24 MGPS2
10 PGC 3077288 15 29 36.50 -67 17 43.08 13.41 PGC2003
11 MGPS J152632-672054 15 26 32.11 -67 20 53.88 14.12 MGPS2
12 MGPS J153034-672120 15 30 34.30 -67 21 20.88 14.50 MGPS2
13 MC4 1522-671 15 26 37.70 -67 19 24.96 14.69 DIXON

Penn State University Goddard Space Flight Center Swift