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 J1916.8-3025

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1916.8-3025 Swift-XRT detections in the field for 4FGL J1916.8-3025

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 19 16 13.70 -30 27 31.02 4.26 (2.7 ± 0.3) x 10-2 86 8.568 8.266
2 19 17 04.57 -30 19 30.09 4.97 (7 ± 2) x 10-3 34 4.527 4.333
3 19 16 50.66 -30 36 05.04 5.59 (3.1 ± 1.0) x 10-3 22 2.862 3.057

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 19 17 27.40 -30 25 18.31 5.17 (3.2 ± 1.1) x 10-3 22 3.007 2.887
2 19 16 45.58 -30 18 44.27 5.59 (3.3 ± 1.1) x 10-3 19 2.914 2.864
3 19 17 04.47 -30 29 06.92 5.53 (2.9 ± 1.1) x 10-3 17 2.534 2.724
4 19 17 23.50 -30 23 09.95 5.31 (2.2 ± 1.0) x 10-3 19 2.558 2.244

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1916.8-3025 Swift-XRT image with known radio, optical and UV sources for 4FGL J1916.8-3025

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 SWIFT J191704.2-301921 19 17 04.22 -30 19 21.72 6.52 SWIFT
2RXS J191614.0-302727 19 16 14.04 -30 27 27.36 8.77 ROSAT
2RXS J191614.0-302727 19 16 14.04 -30 27 27.36 8.77 ROSAT
1RXS J191614.0-302727 19 16 13.99 -30 27 27.00 8.78 ROSAT
1RXS J191614.0-302727 19 16 13.99 -30 27 27.00 8.78 ROSAT
2 XMMSL2 J191613.8-302741 19 16 13.73 -30 27 40.68 8.89 XMM-NEWTON
XMMSL2 J191613.8-302741 19 16 13.73 -30 27 40.68 8.89 XMM-NEWTON
HD 180068 19 16 13.51 -30 27 34.56 8.91 ROSAT
SWIFT J191613.1-302726 19 16 13.18 -30 27 26.28 8.95 SWIFT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 PPM 750562 19 16 50.42 -30 26 32.64 1.28 PPM
CGMW 4-6535 19 16 42.00 -30 24 42.84 2.63 CGMW
2 NVSS J191640-302444 19 16 40.30 -30 24 43.92 2.98 NVSS
3 CGMW 4-6651 19 17 09.31 -30 24 46.08 3.44 CGMW
4 CGMW 4-6662 19 17 13.10 -30 23 35.88 4.59 CGMW
5 CGMW 4-6608 19 16 58.01 -30 31 14.16 5.84 CGMW
6 NVSS J191648-303127 19 16 48.19 -30 31 27.12 6.09 NVSS
7 924- 17 19 17 03.72 -30 19 12.00 6.64 NLTT
8 CGMW 4-6476 19 16 28.90 -30 21 11.88 6.85 CGMW
9 CGMW 4-6703 19 17 26.40 -30 24 42.12 7.10 CGMW
10 PGC 718947 19 16 43.20 -30 17 48.12 8.00 PGC2003
11 CGMW 4-6432 19 16 15.60 -30 25 50.88 8.22 CGMW
12 SAO 211133 19 17 30.14 -30 28 06.24 8.29 SAO
CD-3016848 19 17 30.24 -30 28 08.40 8.32 ACRS
PPM 298799 19 17 30.26 -30 28 08.40 8.32 PPM
13 924- 16 19 16 47.11 -30 34 13.08 8.86 NLTT
14 SAO 211111 19 16 13.51 -30 27 33.12 8.90 SAO
HD 180068 19 16 13.51 -30 27 34.56 8.91 HIC
PPM 298774 19 16 13.51 -30 27 34.56 8.91 PPM
HIP 94705 19 16 13.49 -30 27 34.56 8.91 HIPPARCOS
15 NVSS J191626-301838 19 16 26.40 -30 18 38.16 9.02 NVSS
16 CGMW 4-6748 19 17 39.60 -30 24 42.12 9.93 CGMW
SUMSS J191607-302625 19 16 07.39 -30 26 25.08 10.02 SUMSS
17 NVSS J191607-302640 19 16 07.51 -30 26 39.84 10.03 NVSS
18 NVSS J191627-301704 19 16 27.60 -30 17 03.84 10.11 NVSS
PGC 719155 19 16 28.10 -30 16 54.12 10.20 PGC2003
19 PGC 718130 19 17 37.99 -30 21 48.96 10.23 PGC2003
20 CGMW 4-6486 19 16 32.59 -30 34 48.00 10.37 CGMW
21 NVSS J191612-301940 19 16 12.79 -30 19 41.16 10.55 NVSS
22 CGMW 4-6634 19 17 05.50 -30 35 57.84 10.79 CGMW
23 CD-3016826 19 16 06.31 -30 21 48.96 10.85 ACRS
SAO 211108 19 16 06.29 -30 21 50.04 10.85 SAO
PPM 298768 19 16 06.29 -30 21 48.60 10.86 PPM
24 SAO 211137 19 17 42.58 -30 21 22.32 11.31 SAO
PPM 298805 19 17 42.77 -30 21 25.92 11.33 PPM
CD-3016854 19 17 42.77 -30 21 25.56 11.33 ACRS
25 NVSS J191604-302102 19 16 04.39 -30 21 02.88 11.53 NVSS
26 NVSS J191602-302205 19 16 02.40 -30 22 05.88 11.58 NVSS
TGSSADR J191602.3-302207 19 16 02.30 -30 22 06.96 11.58 GMRTAS150M
GLEAM J191602-302148 19 16 02.69 -30 21 47.88 11.59 GLEAMEGCAT
SUMSS J191602-302154 19 16 02.30 -30 21 55.08 11.65 SUMSS
27 PGC 719845 19 17 04.30 -30 13 32.88 12.14 PGC2003
28 CGMW 4-6407 19 16 05.09 -30 34 45.12 13.99 CGMW
29 CGMW 4-6408 19 16 05.40 -30 15 50.04 14.20 CGMW

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