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 J1649.3-4441

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1649.3-4441 Swift-XRT detections in the field for 4FGL J1649.3-4441


No detected excesses found.

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 48 36.52 -44 40 31.55 7.27 (7 ± 3) x 10-3 9 2.468 2.202

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1649.3-4441 Swift-XRT image with known radio, optical and UV sources for 4FGL J1649.3-4441

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 4XMM J164831.8-444336 16 48 31.87 -44 43 36.48 8.72 XMM-NEWTON
2 4XMM J164830.0-444308 16 48 30.07 -44 43 08.76 8.96 XMM-NEWTON
3 4XMM J164849.0-443448 16 48 49.03 -44 34 48.36 9.02 XMM-NEWTON
4 4XMM J164828.8-444223 16 48 28.80 -44 42 23.40 9.12 XMM-NEWTON
5 4XMM J164827.6-444420 16 48 27.67 -44 44 20.76 9.61 XMM-NEWTON
6 4XMM J164824.4-444419 16 48 24.48 -44 44 19.68 10.15 XMM-NEWTON
7 2CXO J164823.5-443858 16 48 23.52 -44 38 58.56 10.48 CHANDRA
8 4XMM J164823.5-444503 16 48 23.57 -44 45 03.96 10.51 XMM-NEWTON
9 4XMM J164819.9-444343 16 48 19.94 -44 43 44.04 10.82 XMM-NEWTON
10 CXOGSG J164818.1-443850 16 48 18.17 -44 38 50.28 11.43 CHANDRA
2CXO J164818.1-443850 16 48 18.12 -44 38 50.64 11.44 CHANDRA
X164818.05-443850.6 16 48 18.05 -44 38 50.64 11.45 CHANDRA
11 4XMM J164814.9-444104 16 48 14.95 -44 41 04.92 11.60 XMM-NEWTON
12 4XMM J164815.5-443930 16 48 15.58 -44 39 30.96 11.72 XMM-NEWTON
4XMM J164813.7-444043 16 48 13.75 -44 40 42.96 11.85 XMM-NEWTON
4XMM J164829.3-443342 16 48 29.33 -44 33 42.12 12.22 XMM-NEWTON
13 CXOGSG J164829.5-443339 16 48 29.57 -44 33 39.24 12.22 CHANDRA
2CXO J164829.3-443340 16 48 29.40 -44 33 40.32 12.24 CHANDRA
X164829.44-443339.3 16 48 29.45 -44 33 39.24 12.24 CHANDRA
14 2CXO J164814.5-443757 16 48 14.52 -44 37 57.36 12.31 CHANDRA
15 CXOGSG J164825.6-443223 16 48 25.61 -44 32 23.64 13.61 CHANDRA
2CXO J164825.5-443221 16 48 25.51 -44 32 21.84 13.64 CHANDRA
X164825.44-443219.6 16 48 25.44 -44 32 19.68 13.67 CHANDRA
4XMM J164821.9-443250 16 48 21.96 -44 32 50.64 13.77 XMM-NEWTON
16 2CXO J164822.0-443248 16 48 22.01 -44 32 48.84 13.78 CHANDRA
X164821.95-443249.1 16 48 21.96 -44 32 49.20 13.79 CHANDRA
17 X164814.01-443354.6 16 48 14.02 -44 33 54.72 14.23 CHANDRA
CXOGSG J164813.9-443353 16 48 13.99 -44 33 53.28 14.25 CHANDRA
2CXO J164814.0-443352 16 48 14.04 -44 33 52.56 14.25 CHANDRA
18 X164819.20-443159.0 16 48 19.20 -44 31 59.16 14.71 CHANDRA

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 ESO 164547-4438.4 16 49 24.48 -44 43 33.60 1.80 ESOUPPSALA
NGC 6216 16 49 24.00 -44 43 41.88 1.89 OPENCLUST
2 WDS J16495-4443 16 49 30.00 -44 43 00.12 2.06 WDS
NGC 6216 16 49 24.00 -44 43 59.88 2.17 NGC2000
3 HD 328915 16 48 56.71 -44 38 59.64 5.09 HDEC
4 HD 328914 16 49 01.99 -44 47 05.28 6.06 HDEC
5 PMN J1650-4440 16 50 01.20 -44 40 48.00 7.41 PMN
6 WDS J16501-4443 16 50 06.00 -44 43 00.12 8.23 WDS
7 HD 328905 16 49 55.97 -44 36 11.16 8.60 HDEC
8 SAO 227244 16 48 40.75 -44 36 00.72 9.17 SAO
NN 16 48 40.73 -44 36 00.36 9.18 ACRS
PPM 322219 16 48 40.75 -44 36 00.00 9.18 PPM
HD 328907 16 48 40.75 -44 36 00.00 9.18 HDEC
9 HD 328904 16 50 05.52 -44 35 21.12 10.44 HDEC
10 MGPS J164826-444621 16 48 26.59 -44 46 22.08 10.47 MGPS2
11 HD 328916 A 16 49 52.01 -44 50 57.84 10.65 HDEC
HD 328916 B 16 49 52.51 -44 50 54.96 10.66 HDEC
12 V1363 Sco 16 49 38.62 -44 31 41.16 10.78 GCVS
HD 328906 16 49 38.66 -44 31 41.16 10.78 HDEC
13 HD 328911 16 48 16.73 -44 43 54.48 11.42 HDEC
14 HD 328917 16 50 20.54 -44 46 03.36 11.51 HDEC
15 HD 328909 16 48 12.98 -44 36 48.96 12.98 HDEC
16 PPM 762191 16 48 38.66 -44 53 29.04 13.68 PPM
HD 328913 16 48 38.64 -44 53 29.40 13.68 HDEC
17 [WBH2005] G340.727+0.259 16 48 30.60 -44 31 24.96 13.72 WBHGP20CM
MGPS J164830-443124 16 48 30.70 -44 31 23.88 13.72 MGPS2
TGSSADR J164830.4-443116 16 48 30.50 -44 31 15.96 13.85 GMRTAS150M
18 HD 328912 16 48 19.68 -44 52 27.84 15.01 HDEC

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