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 J1901.5-2208

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1901.5-2208 Swift-XRT detections in the field for 4FGL J1901.5-2208

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 19 01 09.34 -22 00 06.94 3.68 (2.8 ± 0.2) x 10-2 425 18.840 19.040
2 19 01 21.33 -22 02 27.25 4.51 (2.0 ± 0.5) x 10-3 48 4.356 4.486
3 19 00 34.50 -21 56 12.66 4.66 (1.4 ± 0.4) x 10-3 26 3.836 4.007
4 19 00 56.66 -21 59 48.00 4.50 (1.5 ± 0.4) x 10-3 33 3.477 3.689
5 19 00 54.82 -22 05 23.87 4.54 (1.3 ± 0.4) x 10-3 36 3.761 3.528
6 19 01 03.40 -21 59 33.88 4.30 (1.5 ± 0.4) x 10-3 35 3.737 3.513

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 01 09.95 -21 50 20.91 4.69 (1.1 ± 0.4) x 10-3 23 3.012 2.980
2 19 01 26.36 -22 03 37.98 4.59 (1.1 ± 0.4) x 10-3 40 3.229 2.905
3 19 01 17.74 -21 57 11.09 4.83 (8 ± 3) x 10-4 22 2.944 2.624
4 19 01 37.94 -22 05 47.65 4.71 (7 ± 3) x 10-4 45 2.529 2.150
5 19 01 00.70 -22 08 17.74 4.66 (6 ± 3) x 10-4 29 2.617 2.090
6 19 01 32.45 -22 07 45.33 4.57 (6 ± 3) x 10-4 53 2.658 1.914
7 19 01 12.88 -22 08 23.26 4.48 (6 ± 3) x 10-4 45 2.945 1.719
8 19 01 09.34 -22 00 06.94 3.68 N/A 425 3.028 N/A

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1901.5-2208 Swift-XRT image with known radio, optical and UV sources for 4FGL J1901.5-2208

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 4XMM J190127.4-220838 19 01 27.43 -22 08 38.76 1.24 XMM-NEWTON
4XMMs J190127.3-220836 19 01 27.34 -22 08 36.60 1.24 XMM-NEWTON
2 4XMM J190138.6-220655 19 01 38.62 -22 06 58.68 1.85 XMM-NEWTON
4XMMs J190138.7-220654 19 01 38.71 -22 06 54.36 1.91 XMM-NEWTON
4XMM J190138.6-220655 19 01 38.76 -22 06 52.56 1.94 XMM-NEWTON
3 4XMM J190132.3-220520 19 01 32.40 -22 05 20.04 2.72 XMM-NEWTON
4 4XMMs J190137.2-220530 19 01 37.30 -22 05 30.12 2.82 XMM-NEWTON
4XMM J190137.2-220529 19 01 37.30 -22 05 29.76 2.83 XMM-NEWTON
5 4XMM J190146.4-220756 19 01 46.44 -22 07 56.28 3.31 XMM-NEWTON
4XMMs J190146.5-220755 19 01 46.51 -22 07 55.92 3.33 XMM-NEWTON
6 4XMM J190118.0-220711 19 01 18.00 -22 07 10.92 3.39 XMM-NEWTON
4XMMs J190117.5-220706 19 01 17.52 -22 07 06.24 3.51 XMM-NEWTON
7 4XMMs J190142.7-220531 19 01 42.74 -22 05 30.84 3.54 XMM-NEWTON
4XMM J190142.9-220529 19 01 42.91 -22 05 29.40 3.58 XMM-NEWTON
8 4XMM J190147.9-220721 19 01 47.71 -22 07 25.68 3.66 XMM-NEWTON
4XMMs J190147.9-220720 19 01 47.98 -22 07 20.64 3.74 XMM-NEWTON
4XMM J190147.9-220721 19 01 48.00 -22 07 20.28 3.75 XMM-NEWTON
9 4XMMs J190119.0-220549 19 01 19.08 -22 05 49.92 3.76 XMM-NEWTON
10 4XMM J190121.0-220518 19 01 21.05 -22 05 18.24 3.77 XMM-NEWTON
11 4XMM J190115.4-220840 19 01 15.46 -22 08 40.20 3.91 XMM-NEWTON
4XMMs J190115.4-220840 19 01 15.41 -22 08 40.92 3.92 XMM-NEWTON
12 2CXO J190115.0-220629 19 01 15.07 -22 06 29.88 4.25 CHANDRA
4XMM J190114.8-220631 19 01 15.00 -22 06 31.68 4.25 XMM-NEWTON
4XMMs J190114.9-220631 19 01 14.93 -22 06 31.32 4.27 XMM-NEWTON
4XMM J190114.8-220631 19 01 14.81 -22 06 30.96 4.30 XMM-NEWTON
13 4XMM J190113.1-220845 19 01 13.18 -22 08 45.96 4.45 XMM-NEWTON
14 4XMM J190112.9-220757 19 01 12.94 -22 07 57.36 4.45 XMM-NEWTON
15 4XMM J190113.4-220920 19 01 13.46 -22 09 20.88 4.51 XMM-NEWTON
16 4XMM J190112.6-220722 19 01 12.62 -22 07 22.44 4.57 XMM-NEWTON
4XMM J190113.4-220935 19 01 13.46 -22 09 35.28 4.59 XMM-NEWTON
17 4XMM J190135.6-220331 19 01 35.69 -22 03 31.68 4.61 XMM-NEWTON
4XMMs J190135.5-220331 19 01 35.59 -22 03 31.32 4.61 XMM-NEWTON
18 4XMM J190126.4-220336 19 01 26.40 -22 03 36.36 4.65 XMM-NEWTON
19 4XMM J190113.7-220959 19 01 13.75 -22 09 59.40 4.67 XMM-NEWTON
20 4XMM J190112.4-220648 19 01 12.43 -22 06 48.24 4.74 XMM-NEWTON
21 4XMM J190114.1-221038 19 01 14.16 -22 10 39.00 4.90 XMM-NEWTON
22 4XMM J190112.3-220612 19 01 12.34 -22 06 12.24 4.94 XMM-NEWTON
4XMM J190114.2-221107 19 01 14.30 -22 11 07.08 5.14 XMM-NEWTON
4XMM J190112.0-220544 19 01 12.05 -22 05 44.88 5.20 XMM-NEWTON
23 4XMM J190114.6-221143 19 01 14.64 -22 11 43.44 5.47 XMM-NEWTON
24 4XMM J190109.6-220619 19 01 09.60 -22 06 19.08 5.50 XMM-NEWTON
4XMMs J190109.5-220619 19 01 09.58 -22 06 19.44 5.50 XMM-NEWTON
25 4XMM J190111.5-220512 19 01 11.57 -22 05 12.84 5.55 XMM-NEWTON
4XMM J190114.8-221208 19 01 14.83 -22 12 08.28 5.72 XMM-NEWTON
26 4XMM J190135.1-220214 19 01 34.54 -22 02 16.08 5.81 XMM-NEWTON
4XMM J190135.1-220214 19 01 35.28 -22 02 16.08 5.83 XMM-NEWTON
27 4XMM J190111.5-220442 19 01 11.52 -22 04 42.24 5.84 XMM-NEWTON
4XMMs J190135.2-220213 19 01 35.23 -22 02 13.56 5.88 XMM-NEWTON
4XMM J190135.1-220214 19 01 35.16 -22 02 12.12 5.90 XMM-NEWTON
28 4XMM J190115.0-221225 19 01 15.02 -22 12 25.56 5.90 XMM-NEWTON
29 4XMMs J190107.2-221001 19 01 07.25 -22 10 01.20 6.09 XMM-NEWTON
4XMM J190107.2-221001 19 01 07.22 -22 10 01.56 6.10 XMM-NEWTON
30 4XMM J190120.8-220228 19 01 20.88 -22 02 28.32 6.16 XMM-NEWTON
31 4XMMs J190105.3-220752 19 01 05.38 -22 07 52.32 6.20 XMM-NEWTON
4XMM J190105.3-220752 19 01 05.35 -22 07 52.68 6.20 XMM-NEWTON
32 4XMM J190112.5-221221 19 01 12.55 -22 12 21.24 6.25 XMM-NEWTON
4XMMs J190112.5-221222 19 01 12.60 -22 12 22.32 6.25 XMM-NEWTON
4XMM J190112.5-221221 19 01 12.58 -22 12 21.96 6.25 XMM-NEWTON
33 4XMM J190111.0-220359 19 01 11.09 -22 03 59.76 6.35 XMM-NEWTON
34 4XMM J190115.1-221304 19 01 15.12 -22 13 04.08 6.37 XMM-NEWTON
35 4XMMs J190158.8-220615 19 01 58.85 -22 06 15.84 6.44 XMM-NEWTON
36 4XMMs J190104.8-220557 19 01 04.87 -22 05 57.12 6.66 XMM-NEWTON
4XMM J190115.5-221332 19 01 15.58 -22 13 32.88 6.70 XMM-NEWTON
37 4XMM J190144.2-220154 19 01 44.23 -22 01 55.56 6.74 XMM-NEWTON
4XMMs J190144.2-220155 19 01 44.23 -22 01 55.20 6.75 XMM-NEWTON
4XMM J190144.2-220154 19 01 44.21 -22 01 54.48 6.76 XMM-NEWTON
38 4XMM J190115.6-221400 19 01 15.62 -22 14 00.60 7.07 XMM-NEWTON
39 4XMMs J190108.7-221249 19 01 08.71 -22 12 50.04 7.22 XMM-NEWTON
4XMM J190108.6-221250 19 01 08.64 -22 12 50.40 7.24 XMM-NEWTON
40 4XMMs J190059.9-220852 19 00 59.95 -22 08 52.80 7.50 XMM-NEWTON
4XMM J190059.9-220852 19 00 59.93 -22 08 52.08 7.50 XMM-NEWTON
41 4XMMs J190159.1-220242 19 01 59.14 -22 02 42.72 8.23 XMM-NEWTON
4XMM J190159.4-220240 19 01 59.42 -22 02 40.56 8.30 XMM-NEWTON
42 4XMM J190134.5-215925 19 01 34.51 -21 59 25.08 8.66 XMM-NEWTON
43 4XMMs J190055.1-220631 19 00 55.18 -22 06 31.32 8.70 XMM-NEWTON
44 4XMM J190054.9-220522 19 00 54.98 -22 05 22.56 9.02 XMM-NEWTON
45 4XMMs J190147.2-215935 19 01 47.26 -21 59 35.88 9.16 XMM-NEWTON
4XMM J190147.3-215934 19 01 47.38 -21 59 34.44 9.19 XMM-NEWTON
4XMM J190109.8-220023 19 01 09.84 -22 00 23.40 9.24 XMM-NEWTON
4XMM J190110.6-215958 19 01 10.66 -21 59 58.92 9.49 XMM-NEWTON
46 X190109.36-220006.2 19 01 09.36 -22 00 06.12 9.55 CHANDRA
CXOGSG J190109.3-220006 19 01 09.36 -22 00 06.12 9.55 CHANDRA
2CXO J190109.3-220005 19 01 09.36 -22 00 05.76 9.55 CHANDRA
4XMM J190109.3-220005 19 01 09.31 -22 00 06.12 9.55 XMM-NEWTON
4XMM J190109.3-220005 19 01 09.31 -22 00 06.12 9.55 XMM-NEWTON
2XMM J190109.3-220003 19 01 09.29 -22 00 03.96 9.59 XMM-NEWTON
4XMM J190109.3-220005 19 01 09.17 -22 00 02.88 9.62 XMM-NEWTON
4XMM J190110.2-215947 19 01 10.20 -21 59 48.12 9.69 XMM-NEWTON
4XMM J190107.5-220007 19 01 07.58 -22 00 07.56 9.76 XMM-NEWTON
47 4XMM J190150.8-215916 19 01 50.83 -21 59 16.44 9.79 XMM-NEWTON
48 4XMM J190105.9-220004 19 01 05.93 -22 00 04.68 10.03 XMM-NEWTON
49 4XMM J190110.2-215947 19 01 09.84 -21 59 25.44 10.06 XMM-NEWTON
50 4XMM J190203.3-220039 19 02 03.31 -22 00 38.88 10.34 XMM-NEWTON
4XMMs J190203.3-220039 19 02 03.36 -22 00 38.88 10.35 XMM-NEWTON
4XMM J190203.3-220039 19 02 03.48 -22 00 39.60 10.37 XMM-NEWTON
51 4XMM J190140.2-215718 19 01 40.37 -21 57 21.96 10.86 XMM-NEWTON
4XMMs J190140.2-215718 19 01 40.27 -21 57 18.36 10.91 XMM-NEWTON
4XMM J190140.2-215718 19 01 40.25 -21 57 17.64 10.93 XMM-NEWTON
52 4XMM J190047.2-221133 19 00 47.23 -22 11 33.00 10.97 XMM-NEWTON
4XMM J190047.2-221133 19 00 47.21 -22 11 34.44 10.98 XMM-NEWTON
4XMMs J190047.1-221134 19 00 47.16 -22 11 34.44 10.99 XMM-NEWTON
53 4XMM J190133.8-215631 19 01 33.89 -21 56 31.92 11.54 XMM-NEWTON
54 4XMM J190042.0-220949 19 00 42.07 -22 09 48.24 11.72 XMM-NEWTON
4XMM J190042.0-220949 19 00 42.00 -22 09 49.68 11.75 XMM-NEWTON
4XMMs J190041.9-220949 19 00 41.93 -22 09 49.68 11.76 XMM-NEWTON
55 4XMMs J190040.5-220633 19 00 40.56 -22 06 33.48 12.04 XMM-NEWTON
4XMM J190040.5-220633 19 00 40.54 -22 06 33.84 12.04 XMM-NEWTON
56 4XMM J190040.7-220324 19 00 40.70 -22 03 24.84 12.79 XMM-NEWTON
4XMMs J190040.6-220323 19 00 40.63 -22 03 23.76 12.81 XMM-NEWTON
57 4XMM J190040.3-220237 19 00 40.56 -22 02 39.12 13.11 XMM-NEWTON
58 4XMM J190041.3-215940 19 00 41.76 -21 59 40.20 14.38 XMM-NEWTON
4XMMs J190041.3-215941 19 00 41.33 -21 59 41.64 14.44 XMM-NEWTON
4XMM J190041.3-215940 19 00 41.18 -21 59 40.20 14.48 XMM-NEWTON
59 4XMM J190040.9-215846 19 00 40.92 -21 58 46.20 15.07 XMM-NEWTON

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 Rns 49255 19 01 37.80 -22 07 34.68 1.40 CPSTARS
2 NVSS J190140-220553 19 01 40.51 -22 05 53.16 2.90 NVSS
3 CGMW 4-4548 19 01 36.29 -22 05 00.96 3.19 CGMW
PGC 209913 19 01 36.31 -22 05 00.96 3.19 PGC2003
4 BD-22 4944 19 01 17.64 -22 07 03.72 3.50 ACRS
PPM 269209 19 01 17.62 -22 07 03.00 3.51 PPM
SAO 187580 19 01 16.99 -22 07 03.00 3.65 SAO
5 SAO 187585 19 01 39.91 -22 11 52.80 4.23 SAO
HD 176551 19 01 40.18 -22 11 55.68 4.29 HIC
HIP 93428 19 01 40.27 -22 11 56.40 4.31 HIPPARCOS
PPM 269214 19 01 40.27 -22 11 56.76 4.32 PPM
CD-2213529 19 01 40.27 -22 11 56.76 4.32 ACRS
6 HIP 93456 19 01 59.50 -22 05 35.52 6.80 HIPPARCOS
BD-22 4950 19 01 59.52 -22 05 35.88 6.80 ACRS
PPM 269221 19 01 59.52 -22 05 36.24 6.80 PPM
HD 176610 19 01 59.52 -22 05 35.52 6.81 HIC
SAO 187591 19 01 59.52 -22 05 34.44 6.81 SAO
WISH B1858.2-2217 19 01 13.20 -22 13 23.88 6.92 WISH
TGSSADR J190113.4-221335 19 01 13.39 -22 13 35.04 7.03 GMRTAS150M
7 NVSS J190113-221336 19 01 13.30 -22 13 36.12 7.05 NVSS
GLEAM J190112-221336 19 01 13.01 -22 13 36.84 7.11 GLEAMEGCAT
8 PGC 209950 19 02 00.31 -22 13 04.08 8.22 PGC2003
CGMW 4-4587 19 02 00.31 -22 13 04.08 8.23 CGMW
9 NVSS J190134-221629 19 01 34.90 -22 16 28.92 8.45 NVSS
10 NVSS J190200-220144 19 02 00.91 -22 01 45.12 9.18 NVSS
QORG J190133.2-221724 19 01 33.19 -22 17 24.00 9.35 QORGCAT
11 GLEAM J190132-221726 19 01 32.30 -22 17 26.16 9.38 GLEAMEGCAT
12 CV J190109.3-220006 19 01 09.31 -22 00 06.12 9.55 CVCAT
V4743 Sgr 19 01 09.34 -22 00 05.76 9.56 GCVS
V4743 Sgr 19 01 09.31 -22 00 06.12 9.56 RITTERCV
WISH B1858.5-2222 19 01 32.30 -22 18 02.16 9.97 WISH
TGSSADR J190131.4-221807 19 01 31.39 -22 18 07.92 10.08 GMRTAS150M
13 NVSS J190131-221808 19 01 31.80 -22 18 07.92 10.08 NVSS
14 NVSS J190140-215714 19 01 40.10 -21 57 15.12 10.97 NVSS
15 NVSS J190101-215855 19 01 01.39 -21 58 54.84 11.58 NVSS
16 CGMW 3-2959 19 01 39.77 -21 56 09.96 12.02 CGMW
PGC 203198 19 01 39.79 -21 56 09.96 12.02 PGC2003
CGMW 4-4555 19 01 40.10 -21 56 06.00 12.10 CGMW
17 NVSS J190041-215950 19 00 41.81 -21 59 49.92 14.26 NVSS
18 WDS J19007-2220 19 00 42.00 -22 19 59.88 16.65 WDS

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