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 J1848.6-0202

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1848.6-0202 Swift-XRT detections in the field for 4FGL J1848.6-0202

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 18 47 52.92 -01 59 54.59 5.82 (6 ± 2) x 10-3 17 3.680 3.490

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 18 48 42.52 -01 58 49.83 6.93 (3.7 ± 1.4) x 10-3 11 2.592 2.659
2 18 47 48.07 -02 08 18.81 7.97 (2.3 ± 1.1) x 10-3 6 2.212 2.223

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1848.6-0202 Swift-XRT image with known radio, optical and UV sources for 4FGL J1848.6-0202

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 X184840.39-020312.6 18 48 40.39 -02 03 12.60 0.29 CHANDRA
CXOGSG J184840.3-020313 18 48 40.39 -02 03 12.96 0.29 CHANDRA
2CXO J184840.3-020312 18 48 40.39 -02 03 12.96 0.29 CHANDRA
2 4XMMs J184835.6-020218 18 48 35.64 -02 02 18.60 1.24 XMM-NEWTON
3 2CXO J184838.6-020145 18 48 38.62 -02 01 45.12 1.24 CHANDRA
X184838.61-020145.2 18 48 38.62 -02 01 45.12 1.24 CHANDRA
CXOGSG J184838.6-020145 18 48 38.62 -02 01 45.12 1.25 CHANDRA
4XMM J184835.5-020219 18 48 35.54 -02 02 19.32 1.25 XMM-NEWTON
4 X184828.78-020510.0 18 48 28.78 -02 05 09.96 3.54 CHANDRA
5 CXOGSG J184845.7-015925 18 48 45.72 -01 59 25.44 3.83 CHANDRA
X184845.73-015925.5 18 48 45.72 -01 59 25.44 3.83 CHANDRA
2CXO J184845.7-015925 18 48 45.72 -01 59 25.44 3.83 CHANDRA
6 X184848.70-015915.9 18 48 48.70 -01 59 16.08 4.31 CHANDRA
7 CXOGSG J184836.6-020755 18 48 36.67 -02 07 55.20 5.03 CHANDRA
2CXO J184836.6-020755 18 48 36.65 -02 07 55.56 5.03 CHANDRA
X184836.57-020756.2 18 48 36.58 -02 07 56.28 5.05 CHANDRA
8 CXOGSG J184845.2-015736 18 48 45.22 -01 57 36.36 5.52 CHANDRA
X184845.21-015736.3 18 48 45.22 -01 57 36.36 5.52 CHANDRA
4XMM J184830.9-015723 18 48 30.96 -01 57 23.04 6.00 XMM-NEWTON
9 2CXO J184831.0-015722 18 48 31.03 -01 57 22.32 6.01 CHANDRA
CXOGSG J184831.0-015722 18 48 31.03 -01 57 21.96 6.01 CHANDRA
X184831.04-015722.0 18 48 31.03 -01 57 21.96 6.01 CHANDRA
10 2CXO J184815.9-020211 18 48 15.91 -02 02 11.40 6.03 CHANDRA
X184815.91-020211.4 18 48 15.91 -02 02 11.40 6.03 CHANDRA
CXOGSG J184815.9-020211 18 48 15.91 -02 02 11.40 6.03 CHANDRA
4XMMs J184815.9-020209 18 48 15.91 -02 02 09.96 6.03 XMM-NEWTON
4XMMs J184830.9-015720 18 48 30.98 -01 57 20.16 6.04 XMM-NEWTON
4XMM J184815.7-020209 18 48 15.79 -02 02 09.60 6.06 XMM-NEWTON
11 X184846.86-015704.0 18 48 46.87 -01 57 03.96 6.15 CHANDRA
12 2CXO J184851.3-015710 18 48 51.36 -01 57 10.08 6.46 CHANDRA
X184851.35-015709.9 18 48 51.36 -01 57 10.08 6.47 CHANDRA
X184846.52-015642.3 18 48 46.51 -01 56 42.36 6.47 CHANDRA
CXOGSG J184851.3-015709 18 48 51.36 -01 57 09.72 6.47 CHANDRA
CXOGSG J184846.5-015642 18 48 46.54 -01 56 42.36 6.47 CHANDRA
13 X184838.56-015621.1 18 48 38.57 -01 56 21.12 6.61 CHANDRA
14 4XMM J184813.7-020002 18 48 13.70 -02 00 02.52 7.15 XMM-NEWTON
4XMMs J184812.9-015947 18 48 12.94 -01 59 47.04 7.44 XMM-NEWTON
15 X184852.06-015600.9 18 48 52.06 -01 56 00.96 7.59 CHANDRA
CXOGSG J184852.0-015600 18 48 52.06 -01 56 00.96 7.59 CHANDRA
2CXO J184852.0-015600 18 48 52.08 -01 56 00.60 7.59 CHANDRA
16 X184815.10-015758.6 18 48 15.10 -01 57 58.68 7.94 CHANDRA
4XMMs J184808.8-020526 18 48 08.83 -02 05 26.88 8.14 XMM-NEWTON
17 CXOGSG J184808.8-020528 18 48 08.86 -02 05 28.68 8.14 CHANDRA
4XMM J184808.8-020526 18 48 08.81 -02 05 26.52 8.14 XMM-NEWTON
2CXO J184808.8-020528 18 48 08.83 -02 05 27.96 8.15 CHANDRA
X184808.82-020528.2 18 48 08.83 -02 05 28.32 8.15 CHANDRA
18 X184832.97-015455.8 18 48 32.98 -01 54 55.80 8.21 CHANDRA
2CXO J184807.7-020515 18 48 07.78 -02 05 15.72 8.34 CHANDRA
19 CXOGSG J184808.4-015957 18 48 08.50 -01 59 57.48 8.39 CHANDRA
2CXO J184808.4-015958 18 48 08.42 -01 59 58.20 8.40 CHANDRA
20 X184851.95-015502.4 18 48 51.96 -01 55 02.28 8.48 CHANDRA
CXOGSG J184851.9-015501 18 48 51.94 -01 55 01.92 8.48 CHANDRA
21 2CXO J184836.9-015402 18 48 36.96 -01 54 02.16 8.95 CHANDRA
22 4XMM J184818.0-015549 18 48 18.02 -01 55 49.80 8.97 XMM-NEWTON
4XMMs J184805.9-015939 18 48 05.95 -01 59 39.12 9.09 XMM-NEWTON
4XMM J184805.8-015938 18 48 05.88 -01 59 38.76 9.11 XMM-NEWTON
23 X184805.85-015940.3 18 48 05.86 -01 59 40.20 9.11 CHANDRA
2CXO J184805.8-015940 18 48 05.83 -01 59 40.20 9.11 CHANDRA
CXOGSG J184805.8-015939 18 48 05.83 -01 59 39.48 9.11 CHANDRA
24 4XMM J184826.7-015403 18 48 26.76 -01 54 03.60 9.48 XMM-NEWTON
4XMMs J184826.2-015404 18 48 26.28 -01 54 04.32 9.51 XMM-NEWTON
25 2CXO J184909.5-015623 18 49 09.53 -01 56 23.28 9.91 CHANDRA
26 2CXO J184918.1-020601 18 49 18.14 -02 06 01.08 10.05 CHANDRA
27 4XMM J184802.4-020643 18 48 02.50 -02 06 43.92 10.07 XMM-NEWTON
4XMMs J184802.4-020644 18 48 02.45 -02 06 44.28 10.08 XMM-NEWTON
28 4XMM J184807.2-015657 18 48 07.22 -01 56 57.48 10.12 XMM-NEWTON
29 X184818.91-015349.2 18 48 18.91 -01 53 49.20 10.53 CHANDRA
CXOGSG J184818.8-015348 18 48 18.89 -01 53 48.84 10.54 CHANDRA
4XMMs J184818.9-015348 18 48 18.91 -01 53 48.84 10.54 XMM-NEWTON
2CXO J184818.7-015347 18 48 18.79 -01 53 47.40 10.57 CHANDRA
30 4XMMs J184758.4-015928 18 47 58.49 -01 59 27.96 10.91 XMM-NEWTON
31 4XMM J184801.5-020843 18 48 01.54 -02 08 43.80 11.18 XMM-NEWTON
4XMMs J184801.5-020845 18 48 01.56 -02 08 45.24 11.18 XMM-NEWTON
32 4XMMs J184809.1-015406 18 48 09.19 -01 54 06.12 11.71 XMM-NEWTON
33 4XMMs J184845.9-015113 18 48 45.91 -01 51 13.32 11.83 XMM-NEWTON
34 2CXO J184759.3-015630 18 47 59.35 -01 56 30.12 12.00 CHANDRA
35 CXOGSG J184752.8-015957 18 47 52.82 -01 59 57.84 12.12 CHANDRA
X184752.81-015957.9 18 47 52.80 -01 59 57.84 12.12 CHANDRA
2CXO J184752.8-015958 18 47 52.80 -01 59 57.84 12.13 CHANDRA
X184752.81-015958.2 18 47 52.80 -01 59 58.20 12.13 CHANDRA
4XMMs J184752.8-015957 18 47 52.82 -01 59 57.48 12.13 XMM-NEWTON
4XMM J184752.8-015957 18 47 52.80 -01 59 57.48 12.13 XMM-NEWTON
2RXS J184752.6-020007 18 47 52.63 -02 00 07.56 12.13 ROSAT
1RXS J184752.6-020007 18 47 52.61 -02 00 06.84 12.14 ROSAT
36 4XMMs J184753.0-015624 18 47 53.02 -01 56 24.36 13.41 XMM-NEWTON
37 4XMMs J184802.2-015258 18 48 02.28 -01 52 58.44 13.70 XMM-NEWTON
4XMM J184802.2-015256 18 48 02.23 -01 52 56.28 13.74 XMM-NEWTON
38 4XMM J184753.8-015236 18 47 53.90 -01 52 36.12 15.46 XMM-NEWTON
4XMMs J184753.8-015236 18 47 53.88 -01 52 36.12 15.47 XMM-NEWTON
39 4XMMs J184752.1-015127 18 47 52.18 -01 51 27.72 16.55 XMM-NEWTON
4XMM J184752.1-015127 18 47 52.13 -01 51 27.72 16.56 XMM-NEWTON

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J184840-020408 18 48 40.80 -02 04 09.12 1.21 NVSS
2 NVSS J184843-020355 18 48 43.20 -02 03 56.16 1.29 NVSS
3 NVSS J184845-020233 18 48 45.29 -02 02 34.08 1.42 NVSS
4 NVSS J184831-020305 18 48 31.90 -02 03 06.12 1.99 NVSS
5 NVSS J184836-020520 18 48 36.19 -02 05 20.04 2.55 NVSS
QORG J184836.1-020525 18 48 36.10 -02 05 25.08 2.63 QORGCAT
[WBH2005] G30.775-0.256 18 48 24.91 -02 02 12.12 3.81 WBHGP6CM
6 PMN J1848-0205 18 48 28.90 -02 05 40.92 3.86 PMN
7 NVSS J184824-020203 18 48 24.70 -02 02 03.12 3.88 NVSS
8 NVSS J184825-020505 18 48 25.80 -02 05 04.92 4.11 NVSS
9 NVSS J184824-020118 18 48 24.50 -02 01 18.12 4.18 NVSS
10 [WBH2005] G30.716-0.350 18 48 38.50 -02 07 55.92 4.98 WBHGP6CM
11 NK1.23 18 48 28.20 -02 07 08.04 5.09 DIXON
12 GPA 030.71-0.30 18 48 26.30 -02 06 46.08 5.09 GPA
13 NVSS J184824-015910 18 48 24.91 -01 59 11.04 5.32 NVSS
14 NVSS J184817-020152 18 48 17.40 -02 01 53.04 5.71 NVSS
15 NVSS J184820-015926 18 48 20.71 -01 59 26.88 5.92 NVSS
MAGPIS Diffuse G30.7667-0.2250 18 48 16.39 -02 01 30.00 6.02 MAGPIS
16 NVSS J184818-020558 18 48 18.60 -02 05 58.92 6.10 NVSS
NVSS J184819-015929 18 48 19.61 -01 59 30.12 6.14 NVSS
17 NVSS J184904-020443 18 49 04.01 -02 04 42.96 6.30 NVSS
18 SG 030.7-00.3 18 48 18.70 -02 06 45.00 6.50 DIXON
GS 030.7-00.3 18 48 18.19 -02 06 36.00 6.51 DIXON
19 MAGPIS Discrete G30.69456-0.36 18 48 39.50 -02 09 29.16 6.52 MAGPIS
20 NVSS J184906-020236 18 49 06.60 -02 02 35.88 6.71 NVSS
21 NVSS J184816-020652 18 48 16.10 -02 06 51.84 7.10 NVSS
MAGPIS Diffuse G30.7050-0.2750 18 48 16.30 -02 06 59.04 7.13 MAGPIS
[WBH2005] G30.687-0.259 18 48 15.91 -02 06 56.88 7.19 WBHGP6CM
[WBH2005] G30.685-0.260 18 48 15.91 -02 07 06.96 7.29 WBHGP6CM
[WBH2005] G30.683-0.258 18 48 15.19 -02 07 09.12 7.45 WBHGP6CM
22 MAGPIS Discrete G30.66696-0.33 18 48 29.21 -02 10 00.84 7.55 MAGPIS
[WBH2005] G30.667-0.332 18 48 29.21 -02 10 01.92 7.56 WBHGP6CM
[WBH2005] G30.667-0.332 18 48 29.21 -02 10 01.92 7.56 WBHGP20CM
23 NVSS J184809-020251 18 48 09.60 -02 02 51.00 7.57 NVSS
24 MAGPIS Discrete G30.67504-0.36 18 48 37.61 -02 10 32.88 7.61 MAGPIS
25 GPA 030.92-0.28 18 48 46.01 -01 55 19.92 7.78 GPA
26 NVSS J184907-020654 18 49 07.20 -02 06 55.08 7.90 NVSS
27 NVSS J184809-020030 18 48 09.19 -02 00 29.88 8.05 NVSS
28 NVSS J184819-015636 18 48 19.90 -01 56 35.88 8.07 NVSS
29 NVSS J184909-020610 18 49 09.79 -02 06 11.16 8.16 NVSS
30 MAGPIS Discrete G30.65619-0.30 18 48 21.70 -02 09 47.16 8.20 MAGPIS
31 NVSS J184905-020806 18 49 05.71 -02 08 07.08 8.27 NVSS
MAGPIS Diffuse G30.8333-0.2069 18 48 20.11 -01 56 13.92 8.34 MAGPIS
32 [WBH2005] G30.805-0.176 18 48 10.99 -01 58 23.16 8.54 WBHGP20CM
33 NVSS J184914-020203 18 49 14.21 -02 02 03.12 8.64 NVSS
34 NSV 11355 18 48 11.11 -01 57 36.00 8.96 GCVSNSVARS
35 [WBH2005] G30.748-0.170 18 48 03.60 -02 01 18.12 9.20 WBHGP6CM
36 NVSS J184826-015420 18 48 26.90 -01 54 20.16 9.21 NVSS
37 PPM 707332 18 48 05.02 -02 06 07.20 9.26 PPM
38 NVSS J184839-015334 18 48 39.10 -01 53 34.08 9.39 NVSS
39 NVSS J184818-015515 18 48 18.31 -01 55 15.96 9.40 NVSS
40 NVSS J184826-021157 18 48 26.21 -02 11 57.84 9.63 NVSS
41 MAGPIS Discrete G30.92772-0.40 18 49 13.10 -01 58 04.08 9.65 MAGPIS
42 NVSS J184854-015352 18 48 54.91 -01 53 53.16 9.82 NVSS
43 [WBH2005] G30.957-0.331 18 49 00.70 -01 54 29.88 9.95 WBHGP20CM
[WBH2005] G30.957-0.331 18 49 00.79 -01 54 29.16 9.97 WBHGP6CM
MAGPIS Discrete G30.95768-0.33 18 49 00.79 -01 54 28.08 9.98 MAGPIS
TGSSADR J184900.9-015426 18 49 00.91 -01 54 25.92 10.02 GMRTAS150M
44 NVSS J184759-020124 18 47 59.71 -02 01 24.96 10.16 NVSS
45 MAGPIS Discrete G30.95945-0.35 18 49 07.20 -01 55 09.84 10.37 MAGPIS
[WBH2005] G30.959-0.360 18 49 07.20 -01 55 09.84 10.37 WBHGP6CM
NVSS J184758-020135 18 47 58.61 -02 01 36.12 10.40 NVSS
46 NVSS J184759-015919 18 47 59.71 -01 59 20.04 10.67 NVSS
47 MAGPIS Discrete G30.97157-0.31 18 48 59.50 -01 53 21.84 10.78 MAGPIS
[WBH2005] G30.972-0.317 18 48 59.50 -01 53 21.84 10.78 WBHGP6CM
48 W43 18 48 00.10 -01 58 36.84 10.84 DIXON
49 NVSS J184802-015708 18 48 02.50 -01 57 07.92 10.99 NVSS
50 MAGPIS Discrete G30.95628-0.23 18 48 39.41 -01 51 48.96 11.14 MAGPIS
51 NVSS J184856-015231 18 48 56.11 -01 52 31.08 11.20 NVSS
52 MAGPIS Discrete G30.63340-0.21 18 48 01.39 -02 08 43.08 11.21 MAGPIS
53 NVSS J184755-020155 18 47 55.10 -02 01 55.92 11.23 NVSS
54 [WBH2005] G30.897-0.160 18 48 17.59 -01 53 00.96 11.38 WBHGP6CM
55 MAGPIS Discrete G30.60394-0.28 18 48 12.41 -02 12 06.84 11.44 MAGPIS
56 TXS 1846-019 18 48 58.30 -01 52 14.16 11.67 TEXAS
57 NVSS J184752-020234 18 47 52.80 -02 02 34.08 11.76 NVSS
58 MAGPIS Discrete G30.82757-0.12 18 48 02.30 -01 55 45.12 11.83 MAGPIS
59 NVSS J184920-020935 18 49 20.40 -02 09 34.92 12.10 NVSS
60 NVSS J184853-021437 18 48 53.21 -02 14 36.96 12.13 NVSS
[WBH2005] G30.995-0.300 18 48 58.30 -01 51 38.16 12.23 WBHGP20CM
[WBH2005] G30.995-0.300 18 48 58.30 -01 51 38.16 12.23 WBHGP6CM
MAGPIS Discrete G30.99573-0.29 18 48 58.30 -01 51 34.92 12.28 MAGPIS
61 NVSS J184858-015134 18 48 58.30 -01 51 34.92 12.28 NVSS
TGSSADR J184858.6-015134 18 48 58.70 -01 51 33.84 12.32 GMRTAS150M
[WBH2005] G30.997-0.299 18 48 58.39 -01 51 28.08 12.39 WBHGP6CM
[WBH2005] G30.998-0.299 18 48 58.39 -01 51 27.00 12.40 WBHGP20CM
62 MAGPIS Discrete G30.95794-0.44 18 49 25.39 -01 57 36.00 12.59 MAGPIS
63 NVSS J184927-020733 18 49 27.60 -02 07 32.88 12.79 NVSS
64 PGCC G30.59-0.23 18 47 58.70 -02 11 07.08 13.12 PLANCKGCC
65 NVSS J184811-021421 18 48 11.90 -02 14 21.12 13.36 NVSS
66 NVSS J184808-021351 18 48 08.90 -02 13 51.96 13.37 NVSS
67 NVSS J184926-021044 18 49 26.11 -02 10 44.04 13.93 NVSS
68 NVSS J184753-021113 18 47 53.50 -02 11 12.84 14.22 NVSS
MAGPIS Discrete G30.57755-0.21 18 47 53.90 -02 11 31.92 14.33 MAGPIS
69 NVSS J184924-015102 18 49 24.10 -01 51 02.88 16.26 NVSS

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