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.

3FGL J2144.6+6606

Field

Detected Excesses
Swift-XRT image of the field for 3FGL J2144.6+6606 Swift-XRT detections in the field for 3FGL J2144.6+6606

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 21 42 58.57 +66 06 06.61 4.05 (6.9 ± 1.2) x 10-3 75 7.328 5.716
2 21 43 36.55 +66 11 35.83 4.72 (2.5 ± 0.7) x 10-3 31 3.488 3.420
3 21 42 46.87 +66 04 55.55 4.45 (2.8 ± 0.9) x 10-3 31 4.464 3.319

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 21 42 38.93 +66 10 05.75 5.64 (1.7 ± 0.6) x 10-3 13 2.715 2.879
2 21 45 02.81 +66 11 25.55 5.24 (1.7 ± 0.6) x 10-3 15 2.717 2.658
3 21 44 27.92 +66 04 26.69 5.59 (1.6 ± 0.6) x 10-3 18 2.703 2.519
4 21 42 26.22 +66 04 22.26 5.24 (1.3 ± 0.6) x 10-3 12 2.485 2.284
5 21 42 58.52 +66 06 06.63 4.05 (1.8 ± 0.8) x 10-3 76 3.379 2.264
6 21 42 58.57 +66 06 06.61 4.05 (3 ± 6) x 10-4 76 3.509 0.524

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 3FGL J2144.6+6606 Swift-XRT image with known radio, optical and UV sources for 3FGL J2144.6+6606

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 CXOGSG J214429.5+660706 21 44 29.59 +66 07 06.60 1.31 CHANDRA
CXO J214429.5+660707 21 44 29.52 +66 07 07.32 1.32 CHANDRA
X214429.52+660707.3 21 44 29.52 +66 07 07.32 1.32 CHANDRA
2 CXOGSG J214415.2+660729 21 44 15.26 +66 07 29.64 2.72 CHANDRA
X214415.22+660731.3 21 44 15.22 +66 07 31.44 2.74 CHANDRA
3 CXO J214438.2+660322 21 44 38.26 +66 03 22.32 2.85 CHANDRA
X214438.36+660320.9 21 44 38.35 +66 03 20.88 2.87 CHANDRA
4 X214429.89+660257.1 21 44 29.88 +66 02 57.12 3.40 CHANDRA
CXO J214429.8+660256 21 44 29.88 +66 02 56.76 3.40 CHANDRA
5 CXO J214426.5+661027 21 44 26.59 +66 10 27.48 4.42 CHANDRA
CXOGSG J214426.5+661027 21 44 26.52 +66 10 27.84 4.43 CHANDRA
X214426.71+661028.2 21 44 26.71 +66 10 28.20 4.43 CHANDRA
6 X214353.12+660809.8 21 43 53.11 +66 08 09.96 5.04 CHANDRA
CXOGSG J214351.1+660804 21 43 51.19 +66 08 04.92 5.19 CHANDRA
7 X214350.46+660847.4 21 43 50.47 +66 08 47.40 5.55 CHANDRA
CXOGSG J214350.4+660847 21 43 50.40 +66 08 47.40 5.55 CHANDRA
8 CXO J214343.4+660730 21 43 43.49 +66 07 31.08 5.77 CHANDRA
CXOGSG J214343.4+660730 21 43 43.44 +66 07 30.72 5.78 CHANDRA
X214343.43+660730.8 21 43 43.44 +66 07 30.72 5.78 CHANDRA
9 CXO J214406.2+660056 21 44 06.22 +66 00 56.52 6.24 CHANDRA
X214406.15+660055.9 21 44 06.14 +66 00 55.80 6.25 CHANDRA
10 CXO J214331.9+660850 21 43 31.97 +66 08 50.28 7.27 CHANDRA
11 CXOGSG J214341.5+661036 21 43 41.50 +66 10 36.48 7.29 CHANDRA
X214331.83+660850.5 21 43 31.82 +66 08 50.64 7.29 CHANDRA
12 CXOGSG J214347.8+661139 21 43 47.90 +66 11 39.12 7.50 CHANDRA
X214347.91+661139.8 21 43 47.90 +66 11 39.84 7.51 CHANDRA
13 X214329.30+660331.9 21 43 29.30 +66 03 32.04 7.56 CHANDRA
CXOGSG J214329.2+660331 21 43 29.28 +66 03 31.68 7.57 CHANDRA
14 CXOGSG J214324.9+660734 21 43 24.89 +66 07 34.32 7.63 CHANDRA
X214324.87+660734.2 21 43 24.86 +66 07 34.32 7.63 CHANDRA
CXO J214324.8+660734 21 43 24.86 +66 07 34.32 7.63 CHANDRA
15 CXOGSG J214321.1+660622 21 43 21.10 +66 06 23.04 7.90 CHANDRA
CXO J214321.1+660622 21 43 21.10 +66 06 22.68 7.90 CHANDRA
X214321.07+660622.9 21 43 21.70 +66 06 23.04 7.90 CHANDRA
CXOGSG J214320.9+660651 21 43 20.93 +66 06 51.84 7.94 CHANDRA
CXO J214320.8+660651 21 43 20.88 +66 06 51.84 7.94 CHANDRA
X214320.88+660651.8 21 43 20.88 +66 06 51.84 7.94 CHANDRA
16 CXO J214334.0+661042 21 43 34.90 +66 10 42.60 7.96 CHANDRA
X214334.10+661043.9 21 43 34.10 +66 10 44.04 7.97 CHANDRA
CXOGSG J214333.9+661043 21 43 33.94 +66 10 43.32 7.98 CHANDRA
17 CXO J214327.1+660936 21 43 27.10 +66 09 36.72 8.03 CHANDRA
CXOGSG J214327.0+660936 21 43 27.00 +66 09 36.36 8.04 CHANDRA
X214326.97+660936.6 21 43 26.98 +66 09 36.72 8.04 CHANDRA
CXOGSG J214326.8+660936 21 43 26.88 +66 09 36.36 8.05 CHANDRA
18 CXOGSG J214319.4+660721 21 43 19.42 +66 07 21.36 8.14 CHANDRA
CXO J214319.4+660721 21 43 19.39 +66 07 21.36 8.14 CHANDRA
X214319.39+660721.4 21 43 19.39 +66 07 21.36 8.14 CHANDRA
19 CXOGSG J214318.1+660535 21 43 18.12 +66 05 35.16 8.22 CHANDRA
X214318.09+660535.1 21 43 18.89 +66 05 35.16 8.23 CHANDRA
CXO J214318.0+660535 21 43 18.89 +66 05 35.16 8.23 CHANDRA
20 CXOGSG J214320.3+660820 21 43 20.40 +66 08 20.40 8.24 CHANDRA
21 CXO J214336.6+661132 21 43 36.65 +66 11 33.00 8.26 CHANDRA
22 CXO J214418.8+655811 21 44 18.89 +65 58 11.64 8.28 CHANDRA
CXOGSG J214336.3+661132 21 43 36.31 +66 11 33.00 8.28 CHANDRA
X214336.30+661133.0 21 43 36.31 +66 11 33.00 8.28 CHANDRA
1WGA J2143.6+6611 21 43 36.19 +66 11 35.16 8.32 ROSAT
CXO J214335.8+661133 21 43 35.88 +66 11 33.00 8.32 CHANDRA
CXOGSG J214316.8+660548 21 43 16.87 +66 05 48.48 8.33 CHANDRA
CXO J214316.8+660548 21 43 16.87 +66 05 48.48 8.33 CHANDRA
X214316.86+660548.6 21 43 16.87 +66 05 48.48 8.33 CHANDRA
2RXP J214335.9+661138 21 43 35.83 +66 11 38.04 8.38 ROSAT
23 CXOGSG J214323.1+661000 21 43 23.16 +66 10 00.84 8.56 CHANDRA
X214322.87+661000.5 21 43 22.87 +66 10 00.48 8.58 CHANDRA
CXO J214322.7+661000 21 43 22.73 +66 10 00.48 8.60 CHANDRA
CXOGSG J214322.6+661000 21 43 22.68 +66 10 00.48 8.60 CHANDRA
24 CXOGSG J214315.3+660756 21 43 15.31 +66 07 57.00 8.65 CHANDRA
X214315.31+660757.0 21 43 15.31 +66 07 57.00 8.65 CHANDRA
CXO J214315.3+660757 21 43 15.31 +66 07 57.00 8.65 CHANDRA
25 CXOGSG J214307.1+660654 21 43 07.20 +66 06 54.00 9.33 CHANDRA
26 CXOGSG J214311.6+660911 21 43 11.64 +66 09 11.52 9.33 CHANDRA
CXO J214311.6+660911 21 43 11.62 +66 09 11.52 9.33 CHANDRA
X214307.14+660654.0 21 43 07.13 +66 06 54.00 9.33 CHANDRA
X214311.61+660911.4 21 43 11.62 +66 09 11.52 9.33 CHANDRA
CXO J214307.1+660654 21 43 07.13 +66 06 54.00 9.33 CHANDRA
X214305.80+660629.9 21 43 05.81 +66 06 29.88 9.45 CHANDRA
CXOGSG J214305.0+660653 21 43 05.21 +66 06 53.28 9.54 CHANDRA
CXO J214305.0+660653 21 43 05.11 +66 06 53.28 9.54 CHANDRA
X214305.00+660653.2 21 43 04.99 +66 06 53.28 9.55 CHANDRA
27 CXOGSG J214305.2+660734 21 43 05.21 +66 07 33.96 9.59 CHANDRA
X214305.18+660733.9 21 43 05.18 +66 07 33.96 9.60 CHANDRA
CXO J214305.1+660733 21 43 05.16 +66 07 33.96 9.60 CHANDRA
28 X214303.47+660526.3 21 43 03.48 +66 05 26.16 9.71 CHANDRA
CXOGSG J214302.9+660656 21 43 02.98 +66 06 56.16 9.75 CHANDRA
X214302.93+660656.1 21 43 02.93 +66 06 56.16 9.76 CHANDRA
29 CXO J214327.3+655939 21 43 27.38 +65 59 39.12 9.80 CHANDRA
30 CXOGSG J214301.8+660644 21 43 01.90 +66 06 44.64 9.85 CHANDRA
CXO J214301.8+660644 21 43 01.90 +66 06 44.64 9.85 CHANDRA
X214301.89+660644.6 21 43 01.90 +66 06 44.64 9.85 CHANDRA
CXOGSG J214301.7+660708 21 43 01.73 +66 07 08.40 9.90 CHANDRA
X214301.72+660708.7 21 43 01.73 +66 07 08.76 9.90 CHANDRA
CXOGSG J214259.9+660642 21 43 00.00 +66 06 42.48 10.04 CHANDRA
X214259.95+660642.5 21 42 59.95 +66 06 42.48 10.05 CHANDRA
CXOGSG J214259.8+660655 21 42 59.81 +66 06 55.80 10.07 CHANDRA
CXO J214259.7+660655 21 42 59.78 +66 06 55.80 10.07 CHANDRA
X214259.77+660655.7 21 42 59.76 +66 06 55.80 10.08 CHANDRA
CXOGSG J214258.7+660636 21 42 58.78 +66 06 36.72 10.16 CHANDRA
X214258.76+660636.8 21 42 58.75 +66 06 36.72 10.16 CHANDRA
CXO J214258.7+660636 21 42 58.75 +66 06 36.72 10.16 CHANDRA
31 X214258.69+660610.2 21 42 58.68 +66 06 10.08 10.16 CHANDRA
CXO J214258.6+660610 21 42 58.68 +66 06 10.08 10.16 CHANDRA
CXOGSG J214258.6+660610 21 42 58.63 +66 06 10.44 10.17 CHANDRA
1WGA J2142.9+6606 21 42 58.51 +66 06 06.48 10.18 ROSAT
32 CXOGSG J214259.6+660433 21 42 59.64 +66 04 33.96 10.21 CHANDRA
CXO J214259.6+660433 21 42 59.64 +66 04 33.96 10.21 CHANDRA
X214259.63+660433.7 21 42 59.64 +66 04 33.60 10.21 CHANDRA
33 X214258.26+660540.0 21 42 58.27 +66 05 39.84 10.22 CHANDRA
CXOGSG J214258.3+660527 21 42 58.39 +66 05 27.24 10.22 CHANDRA
X214258.38+660527.3 21 42 58.39 +66 05 27.24 10.23 CHANDRA
CXO J214258.3+660527 21 42 58.39 +66 05 27.24 10.23 CHANDRA
34 CXOGSG J214258.3+660726 21 42 58.37 +66 07 26.40 10.26 CHANDRA
CXO J214258.3+660726 21 42 58.34 +66 07 26.40 10.27 CHANDRA
X214258.33+660726.2 21 42 58.32 +66 07 26.04 10.27 CHANDRA
2RXP J214257.4+660611 21 42 57.34 +66 06 11.16 10.30 ROSAT
X214257.27+660634.9 21 42 57.26 +66 06 34.92 10.31 CHANDRA
CXOGSG J214257.2+660634 21 42 57.22 +66 06 34.56 10.32 CHANDRA
CXO J214257.2+660635 21 42 57.19 +66 06 34.92 10.32 CHANDRA
CXOGSG J214256.7+660637 21 42 56.78 +66 06 37.44 10.36 CHANDRA
X214256.78+660637.2 21 42 56.78 +66 06 37.08 10.36 CHANDRA
CXO J214256.7+660637 21 42 56.76 +66 06 37.08 10.36 CHANDRA
2RXS J214256.7+660547 21 42 56.78 +66 05 47.40 10.37 ROSAT
CXOGSG J214256.2+660602 21 42 56.30 +66 06 02.16 10.41 CHANDRA
X214256.28+660602.1 21 42 56.28 +66 06 02.16 10.41 CHANDRA
CXO J214256.2+660602 21 42 56.28 +66 06 02.16 10.41 CHANDRA
CXOGSG J214255.8+660542 21 42 55.90 +66 05 42.72 10.46 CHANDRA
X214255.86+660542.7 21 42 55.87 +66 05 42.72 10.46 CHANDRA
1RXS J214255.3+660534 21 42 55.30 +66 05 34.08 10.53 ROSAT
35 CXOGSG J214254.9+660630 21 42 54.91 +66 06 30.60 10.55 CHANDRA
X214254.89+660630.7 21 42 54.89 +66 06 30.60 10.55 CHANDRA
X214254.84+660612.8 21 42 54.84 +66 06 12.96 10.55 CHANDRA
CXO J214254.8+660613 21 42 54.84 +66 06 13.32 10.55 CHANDRA
CXOGSG J214254.8+660613 21 42 54.84 +66 06 13.32 10.55 CHANDRA
CXOGSG J214254.7+660635 21 42 54.79 +66 06 35.28 10.56 CHANDRA
X214254.77+660635.3 21 42 54.77 +66 06 35.28 10.57 CHANDRA
CXO J214254.7+660635 21 42 54.77 +66 06 35.28 10.57 CHANDRA
2E 2141.7+6552 21 42 54.74 +66 06 31.68 10.57 EINSTEIN
2E 2141.7+6552 21 42 54.62 +66 06 31.68 10.58 EINSTEIN
CXOGSG J214254.9+660721 21 42 54.94 +66 07 21.36 10.60 CHANDRA
X214254.93+660721.1 21 42 54.94 +66 07 21.00 10.60 CHANDRA
CXO J214254.9+660720 21 42 54.91 +66 07 21.00 10.60 CHANDRA
36 X214254.79+660416.5 21 42 54.79 +66 04 16.32 10.74 CHANDRA
X214252.66+660657.4 21 42 52.66 +66 06 57.24 10.80 CHANDRA
CXOGSG J214252.6+660657 21 42 52.66 +66 06 57.24 10.80 CHANDRA
37 CXO J214252.6+660657 21 42 52.63 +66 06 57.24 10.80 CHANDRA
38 CXO J214254.0+660814 21 42 54.50 +66 08 15.00 10.82 CHANDRA
CXOGSG J214254.0+660815 21 42 54.50 +66 08 15.00 10.82 CHANDRA
X214254.04+660814.9 21 42 54.41 +66 08 15.00 10.82 CHANDRA
CXOGSG J214253.4+660805 21 42 53.50 +66 08 05.28 10.84 CHANDRA
X214253.49+660805.2 21 42 53.50 +66 08 05.28 10.85 CHANDRA
CXO J214253.4+660805 21 42 53.47 +66 08 05.28 10.85 CHANDRA
CXOGSG J214251.9+660633 21 42 51.96 +66 06 33.48 10.85 CHANDRA
CXO J214251.9+660633 21 42 51.96 +66 06 33.48 10.85 CHANDRA
X214251.97+660633.4 21 42 51.96 +66 06 33.48 10.85 CHANDRA
39 CXOGSG J214250.9+660603 21 42 50.98 +66 06 03.96 10.95 CHANDRA
CXO J214250.9+660603 21 42 50.98 +66 06 03.60 10.95 CHANDRA
X214250.95+660603.7 21 42 50.95 +66 06 03.60 10.95 CHANDRA
CXOGSG J214250.2+660635 21 42 50.23 +66 06 35.28 11.03 CHANDRA
X214250.20+660635.0 21 42 50.21 +66 06 34.92 11.03 CHANDRA
CXO J214250.2+660635 21 42 50.21 +66 06 34.92 11.03 CHANDRA
40 X214253.58+660908.3 21 42 53.59 +66 09 08.28 11.06 CHANDRA
X214249.88+660542.5 21 42 49.87 +66 05 42.36 11.07 CHANDRA
41 1RXS J214309.6+655941 21 43 09.60 +65 59 41.64 11.18 ROSAT
42 3XMM J214509.9+655528 21 45 09.94 +65 55 28.56 11.20 XMM-NEWTON
43 CXO J214415.5+655514 21 44 15.55 +65 55 14.52 11.24 CHANDRA
CXOGSG J214247.9+660652 21 42 47.95 +66 06 52.92 11.27 CHANDRA
X214247.92+660653.0 21 42 47.93 +66 06 52.92 11.27 CHANDRA
CXO J214247.9+660652 21 42 47.93 +66 06 52.92 11.27 CHANDRA
1WGA J2142.8+6604 21 42 48.31 +66 04 59.52 11.29 ROSAT
2RXP J214247.9+660500 21 42 47.83 +66 05 00.24 11.33 ROSAT
44 CXOGSG J214246.9+660657 21 42 46.92 +66 06 57.24 11.38 CHANDRA
X214246.90+660657.3 21 42 46.90 +66 06 57.24 11.38 CHANDRA
CXO J214246.8+660657 21 42 46.90 +66 06 57.24 11.38 CHANDRA
45 CXOGSG J214247.0+660457 21 42 47.11 +66 04 58.08 11.41 CHANDRA
X214247.08+660457.8 21 42 47.81 +66 04 57.72 11.41 CHANDRA
CXO J214247.0+660457 21 42 47.81 +66 04 57.72 11.41 CHANDRA
X214246.27+660655.7 21 42 46.27 +66 06 55.80 11.44 CHANDRA
46 CXOGSG J214246.1+660556 21 42 46.13 +66 05 56.40 11.44 CHANDRA
X214246.11+660556.2 21 42 46.10 +66 05 56.04 11.44 CHANDRA
CXO J214246.0+660556 21 42 46.90 +66 05 56.40 11.44 CHANDRA
CXOGSG J214246.1+660513 21 42 46.10 +66 05 13.92 11.48 CHANDRA
X214246.09+660513.8 21 42 46.90 +66 05 13.92 11.49 CHANDRA
CXO J214246.0+660513 21 42 46.80 +66 05 13.92 11.49 CHANDRA
CXOGSG J214245.3+660704 21 42 45.31 +66 07 04.44 11.55 CHANDRA
X214245.31+660704.4 21 42 45.31 +66 07 04.44 11.55 CHANDRA
CXO J214245.3+660704 21 42 45.31 +66 07 04.44 11.55 CHANDRA
47 X214248.25+660224.8 21 42 48.24 +66 02 24.72 11.86 CHANDRA
1WGA J2142.6+6610 21 42 40.61 +66 10 05.16 12.59 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
WN 2143.8+6559 21 44 58.80 +66 12 57.96 7.03 WENSS
1 NVSS J214459+661305 21 44 59.21 +66 13 05.88 7.17 NVSS
TGSSADR J214459.4+661305 21 44 59.40 +66 13 05.88 7.17 GMRTAS150M
CGPS J214459+661306 21 44 59.50 +66 13 06.96 7.20 CGPSNGPCAT
2 CGPS J214348+661432 21 43 48.50 +66 14 33.00 9.77 CGPSNGPCAT
3 CGPS J214257+660615 21 42 57.00 +66 06 15.84 10.33 CGPSNGPCAT
4 PCCS2 070 G105.40+09.89 21 42 54.79 +66 07 04.08 10.59 PCCS070GHZ
5 NVSS J214438+661709 21 44 38.30 +66 17 08.88 10.93 NVSS
CGPS J214438+661711 21 44 38.40 +66 17 12.12 10.98 CGPSNGPCAT
CGPS J214438+655428 21 44 38.81 +65 54 29.16 11.75 CGPSNGPCAT
6 NVSS J214438+655426 21 44 37.99 +65 54 25.92 11.79 NVSS
7 PCCS2 044 G105.36+09.87 21 42 43.01 +66 04 28.92 11.88 PCCS044GHZ
8 NVSS J214243+661252 21 42 43.39 +66 12 52.92 13.45 NVSS
9 NVSS J214246+655713 21 42 46.80 +65 57 14.04 14.52 NVSS
CGPS J214247+655703 21 42 47.69 +65 57 03.96 14.55 CGPSNGPCAT

Penn State University Goddard Space Flight Center Swift