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 J1616.6-5009

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1616.6-5009 Swift-XRT detections in the field for 4FGL J1616.6-5009

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 16 16 37.72 -49 58 45.41 3.54 (1.94 ± 0.04) x 10-1 2144 48.550 43.790
2 16 16 52.97 -49 51 24.89 4.31 (5.7 ± 0.8) x 10-3 68 7.534 7.508
3 16 17 00.88 -50 04 01.91 4.31 (2.0 ± 0.5) x 10-3 62 5.195 3.836

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 17 00.88 -50 04 01.91 4.31 (1.3 ± 0.5) x 10-3 64 3.413 2.879
2 16 16 23.95 -50 05 29.53 4.74 (10 ± 5) x 10-4 46 2.801 2.145
3 16 16 12.61 -50 06 22.81 4.83 (8 ± 4) x 10-4 33 2.602 2.104
4 16 16 00.17 -50 03 48.94 4.90 (7 ± 4) x 10-4 22 2.647 2.078
5 16 16 37.71 -49 58 45.38 3.54 (6 ± 6) x 10-4 2144 2.715 1.123
6 16 16 37.69 -49 58 45.26 3.54 N/A 2150 3.720 N/A

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1616.6-5009 Swift-XRT image with known radio, optical and UV sources for 4FGL J1616.6-5009

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 4XMM J161631.7-501158 16 16 31.78 -50 11 58.20 3.08 XMM-NEWTON
2 4XMM J161655.4-500541 16 16 55.49 -50 05 41.28 4.39 XMM-NEWTON
3 2CXO J161705.4-501346 16 17 05.47 -50 13 46.20 6.48 CHANDRA
X161705.52-501348.1 16 17 05.52 -50 13 48.00 6.51 CHANDRA
4 4XMM J161555.4-500930 16 15 55.42 -50 09 30.96 6.81 XMM-NEWTON
5 4XMM J161554.5-500806 16 15 54.60 -50 08 06.36 6.99 XMM-NEWTON
6 2CXO J161652.9-500111 16 16 52.97 -50 01 10.92 8.23 CHANDRA
7 2CXO J161701.5-501628 16 17 01.56 -50 16 28.20 8.35 CHANDRA
CXOGSG J161701.6-501628 16 17 01.68 -50 16 28.56 8.36 CHANDRA
X161701.70-501628.8 16 17 01.70 -50 16 28.92 8.36 CHANDRA
8 2CXO J161717.7-501503 16 17 17.76 -50 15 03.24 8.78 CHANDRA
9 2CXO J161623.9-500010 16 16 23.93 -50 00 10.80 9.14 CHANDRA
10 4XMM J161558.7-500217 16 15 58.80 -50 02 17.52 9.20 XMM-NEWTON
11 4XMM J161636.0-495949 16 16 36.05 -49 59 49.56 9.22 XMM-NEWTON
12 CXOGSG J161644.7-495944 16 16 44.71 -49 59 44.88 9.36 CHANDRA
X161644.72-495944.8 16 16 44.71 -49 59 44.88 9.36 CHANDRA
2CXO J161644.7-495944 16 16 44.74 -49 59 44.88 9.36 CHANDRA
13 4XMM J161733.9-500502 16 17 33.91 -50 05 02.76 9.84 XMM-NEWTON
1RXS J161637.2-495847 16 16 37.20 -49 58 47.64 10.25 ROSAT
1RXS J161637.2-495847 16 16 37.20 -49 58 46.92 10.26 ROSAT
2RXS J161637.2-495846 16 16 37.25 -49 58 46.20 10.28 ROSAT
4XMM J161637.7-495845 16 16 37.80 -49 58 45.84 10.28 XMM-NEWTON
14 2CXO J161637.7-495844 16 16 37.75 -49 58 44.76 10.30 CHANDRA
CXOGSG J161637.7-495844 16 16 37.75 -49 58 44.76 10.30 CHANDRA
IGR J16167-4957 16 16 37.68 -49 58 44.40 10.30 INTEGRAL
XMMSL2 J161637.9-495844 16 16 37.80 -49 58 44.04 10.31 XMM-NEWTON
IGR J16167-4957 16 16 37.70 -49 58 44.04 10.31 INTEGRAL
15 4XMM J161629.6-495848 16 16 29.66 -49 58 48.36 10.32 XMM-NEWTON
16 IGR J16167-4957 16 16 33.84 -49 58 40.80 10.38 INTEGRAL
17 X161701.15-501848.0 16 17 01.15 -50 18 47.88 10.45 CHANDRA
2CXO J161701.1-501848 16 17 01.15 -50 18 48.24 10.45 CHANDRA
CXOGSG J161701.1-501848 16 17 01.18 -50 18 48.24 10.45 CHANDRA
IGR J16167-4957 16 16 38.88 -49 58 30.00 10.54 INTEGRAL
18 2CXO J161637.3-495802 16 16 37.32 -49 58 03.00 10.99 CHANDRA
19 2RXS J161702.8-501919 16 17 02.83 -50 19 19.20 11.03 ROSAT
1RXS J161702.8-501920 16 17 02.81 -50 19 20.64 11.05 ROSAT
20 2CXO J161715.6-501844 16 17 15.62 -50 18 44.64 11.43 CHANDRA
21 2CXO J161730.4-501651 16 17 30.48 -50 16 51.60 11.50 CHANDRA
22 2CXO J161554.3-495951 16 15 54.38 -49 59 51.36 11.53 CHANDRA
23 4XMM J161718.2-495846 16 17 18.24 -49 58 46.92 12.14 XMM-NEWTON
24 X161702.28-495728.8 16 17 02.28 -49 57 28.80 12.21 CHANDRA
CXOGSG J161702.2-495728 16 17 02.28 -49 57 28.80 12.21 CHANDRA
2CXO J161702.2-495728 16 17 02.28 -49 57 28.80 12.21 CHANDRA
25 4XMM J161752.0-500517 16 17 52.03 -50 05 17.52 12.48 XMM-NEWTON
4XMM J161731.1-495943 16 17 31.15 -49 59 43.08 12.66 XMM-NEWTON
26 X161731.70-495927.7 16 17 31.70 -49 59 27.60 12.91 CHANDRA
27 CXOGSG J161718.7-502014 16 17 18.72 -50 20 14.28 12.97 CHANDRA
X161718.72-502014.2 16 17 18.72 -50 20 14.28 12.97 CHANDRA
28 4XMM J161739.2-500028 16 17 39.24 -50 00 28.80 13.06 XMM-NEWTON
29 2CXO J161734.3-501957 16 17 34.34 -50 19 57.72 14.18 CHANDRA
CXOGSG J161734.3-501957 16 17 34.37 -50 19 57.72 14.18 CHANDRA

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 TGSSADR J161614.7-500851 16 16 14.81 -50 08 52.08 3.69 GMRTAS150M
2 HD 330466 16 16 07.22 -50 10 45.48 5.19 HDEC
3 HW NOR 16 16 30.19 -50 15 04.32 6.15 WOODEBCAT
4 HR 6058 16 17 00.91 -50 04 05.88 6.18 BSC5P
SAO 226619 16 17 00.89 -50 04 05.52 6.18 SAO
HIP 79790 16 17 00.94 -50 04 05.16 6.19 HIPPARCOS
PPM 344770 16 17 00.94 -50 04 05.16 6.19 PPM
CD-4910474 16 17 00.94 -50 04 05.16 6.19 ACRS
HD 146143 16 17 00.96 -50 04 05.16 6.19 HIC
5 PMN J1616-5002 16 16 56.69 -50 02 47.04 6.95 PMN
6 MGPS J161705-500259 16 17 05.21 -50 02 58.92 7.48 MGPS2
7 HD 330464 16 16 01.94 -50 03 22.68 8.07 HDEC
8 PSR J1616-5017 16 16 29.90 -50 17 15.00 8.30 ATNFPULSAR
9 PMN J1615-5011 16 15 44.30 -50 11 26.88 8.90 PMN
10 MGPS J161547-501407 16 15 47.11 -50 14 08.16 9.58 MGPS2
11 PPM 344748 16 15 42.34 -50 05 04.20 9.74 PPM
SAO 226604 16 15 42.22 -50 05 03.84 9.76 SAO
12 MGPS J161653-495931 16 16 53.21 -49 59 30.84 9.84 MGPS2
13 MGPS J161618-495926 16 16 18.10 -49 59 26.16 10.11 MGPS2
14 J1616-4958 16 16 37.80 -49 58 45.12 10.29 RITTERCV
15 HD 330463 16 16 02.90 -49 59 33.36 11.02 HDEC
16 MGPS J161721-501908 16 17 21.31 -50 19 08.04 12.26 MGPS2
17 NOR 16 15 29.88 -50 15 12.24 12.49 WOODEBCAT

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