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 J1545.0-6642

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1545.0-6642 Swift-XRT detections in the field for 4FGL J1545.0-6642

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 15 44 58.90 -66 41 47.44 3.60 (2.11 ± 0.07) x 10-1 937 28.470 29.210

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 45 14.46 -66 36 21.52 5.44 (2.2 ± 0.9) x 10-3 21 2.632 2.626
2 15 44 58.03 -66 52 12.35 5.02 (2.4 ± 0.9) x 10-3 27 2.876 2.518
3 15 45 27.58 -66 43 42.53 5.82 (2.1 ± 0.9) x 10-3 16 2.489 2.318
4 15 44 58.90 -66 41 47.28 3.60 (2.3 ± 1.3) x 10-3 931 4.823 1.756
5 15 44 58.90 -66 41 47.28 3.60 N/A 931 2.549 N/A

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1545.0-6642 Swift-XRT image with known radio, optical and UV sources for 4FGL J1545.0-6642

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2RXS J154458.3-664153 15 44 58.37 -66 41 53.88 0.27 ROSAT
1RXS J154458.3-664153 15 44 58.30 -66 41 53.16 0.29 ROSAT
1RXS J154458.3-664153 15 44 58.30 -66 41 53.16 0.29 ROSAT
2E 1540.2-6632 15 44 58.49 -66 41 30.84 0.61 EINSTEIN
2E 1540.2-6632 15 44 58.39 -66 41 30.48 0.62 EINSTEIN
2 1RXS J154407.4-663039 15 44 07.39 -66 30 38.88 12.59 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 MGPS J154459-664146 15 44 59.30 -66 41 45.96 0.34 MGPS2
2 PMN J1544-6641 15 44 49.90 -66 41 12.12 1.36 PMN
3 PGC 3079839 15 45 45.41 -66 40 32.16 4.74 PGC2003
4 WDS J15439-6644 15 43 54.00 -66 43 59.88 6.81 WDS
5 MGPS J154343-664436 15 43 43.51 -66 44 36.96 7.98 MGPS2
6 GY TrA 15 46 20.64 -66 41 15.36 8.00 GCVS
7 KV TrA 15 45 32.54 -66 50 21.84 8.86 GCVS
8 PPM 780647 15 44 37.18 -66 51 06.84 9.29 PPM
CD-66 1791 15 44 37.15 -66 51 07.56 9.31 ACRS
PGC 303519 15 46 10.80 -66 35 30.84 9.61 PGC2003
9 MGPS J154609-663525 15 46 09.91 -66 35 25.08 9.61 MGPS2
10 MGPS J154319-664234 15 43 19.70 -66 42 33.84 9.94 MGPS2
11 PPM 780654 15 45 00.05 -66 52 06.24 10.00 PPM
CD-66 1793 15 45 00.00 -66 52 06.24 10.00 ACRS
12 PGC 3079842 15 46 38.81 -66 39 51.12 10.02 PGC2003
13 MGPS J154636-664532 15 46 36.31 -66 45 32.04 10.10 MGPS2
14 MGPS J154333-663626 15 43 33.79 -66 36 25.92 10.27 MGPS2
15 MGPS J154641-664636 15 46 42.00 -66 46 36.12 11.01 MGPS2
16 PPM 780650 15 44 50.42 -66 30 58.68 11.17 PPM
17 PGC 3077402 15 43 24.50 -66 35 51.00 11.36 PGC2003
18 MGPS J154651-664702 15 46 51.60 -66 47 02.04 12.05 MGPS2
19 SAO 253265 15 43 51.02 -66 31 14.52 12.85 SAO
PPM 361610 15 43 50.81 -66 31 14.16 12.86 PPM
CD-66 1788 15 43 50.78 -66 31 14.16 12.87 ACRS
HIP 77039 15 43 50.76 -66 31 13.80 12.87 HIPPARCOS
HD 139720 15 43 50.76 -66 31 13.08 12.88 HIC
20 PPM 780632 15 43 31.39 -66 53 00.60 13.98 PPM

Penn State University Goddard Space Flight Center Swift