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 J0938.8+5155

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J0938.8+5155 Swift-XRT detections in the field for 4FGL J0938.8+5155

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 09 38 20.99 +52 02 53.72 3.79 (1.0 ± 0.2) x 10-2 171 12.170 6.613
2 09 38 35.01 +51 54 57.47 5.35 (3.4 ± 0.8) x 10-3 30 4.171 4.285
3 09 38 05.70 +51 59 19.80 5.35 (2.6 ± 0.7) x 10-3 24 3.996 3.728

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 09 37 57.35 +51 56 08.24 6.31 (1.5 ± 0.5) x 10-3 15 2.737 2.852
2 09 38 13.68 +51 49 51.80 5.76 (1.8 ± 0.6) x 10-3 18 3.107 2.824
3 09 38 10.58 +51 56 30.82 6.65 (1.4 ± 0.5) x 10-3 12 2.552 2.629
4 09 39 56.16 +51 52 49.55 6.78 (1.1 ± 0.5) x 10-3 9 2.314 2.370
5 09 39 29.47 +51 49 25.47 6.65 (8 ± 4) x 10-4 9 2.313 2.033
6 09 38 21.00 +52 02 53.64 3.79 (2.1 ± 1.1) x 10-3 171 5.388 1.912
7 09 38 20.99 +52 02 53.71 3.79 (1.7 ± 1.1) x 10-3 172 8.443 1.574
8 09 38 21.26 +52 02 52.68 3.79 (8 ± 8) x 10-4 173 3.699 1.013
9 09 38 21.26 +52 02 52.68 3.79 (8 ± 8) x 10-4 172 4.599 0.969
10 09 38 20.99 +52 02 53.72 3.79 (5 ± 6) x 10-4 171 2.672 0.891
11 09 38 20.99 +52 02 53.72 3.79 (4 ± 570) x 10-6 168 2.861 0.006

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J0938.8+5155 Swift-XRT image with known radio, optical and UV sources for 4FGL J0938.8+5155

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2CXO J093844.0+515645 09 38 44.04 +51 56 45.60 2.06 CHANDRA
CXOGSG J093844.0+515646 09 38 44.11 +51 56 46.68 2.06 CHANDRA
2 CXOGSG J093853.6+515822 09 38 53.66 +51 58 22.08 3.22 CHANDRA
2CXO J093853.6+515823 09 38 53.71 +51 58 23.16 3.24 CHANDRA
3 2CXO J093831.4+515700 09 38 31.42 +51 57 00.72 3.72 CHANDRA
CXOGSG J093830.2+515713 09 38 30.26 +51 57 13.68 3.98 CHANDRA
4 2CXO J093842.0+515848 09 38 42.02 +51 58 48.72 3.99 CHANDRA
2CXO J093830.2+515713 09 38 30.22 +51 57 13.68 3.99 CHANDRA
5 2CXO J093821.8+515727 09 38 21.86 +51 57 27.00 5.23 CHANDRA
6 2CXO J093830.6+515949 09 38 30.65 +51 59 49.56 5.75 CHANDRA
CXOGSG J093830.6+515951 09 38 30.62 +51 59 51.36 5.77 CHANDRA
7 2CXO J093821.4+515902 09 38 21.43 +51 59 02.04 6.14 CHANDRA
CXOGSG J093821.4+515902 09 38 21.41 +51 59 02.04 6.15 CHANDRA
8 2CXO J093817.1+515823 09 38 17.18 +51 58 23.52 6.31 CHANDRA
CXOGSG J093817.0+515823 09 38 17.09 +51 58 23.88 6.33 CHANDRA
9 2CXO J093848.3+520144 09 38 48.36 +52 01 44.04 6.61 CHANDRA
CXOGSG J093848.4+520144 09 38 48.46 +52 01 44.40 6.61 CHANDRA
10 2CXO J093840.1+520134 09 38 40.18 +52 01 34.32 6.69 CHANDRA
2CXO J093848.5+520156 09 38 48.60 +52 01 56.28 6.81 CHANDRA
11 CXOGSG J093818.5+515939 09 38 18.58 +51 59 39.12 6.88 CHANDRA
2CXO J093818.5+515939 09 38 18.60 +51 59 39.48 6.88 CHANDRA
12 CXOGSG J093835.9+520151 09 38 35.93 +52 01 51.24 7.16 CHANDRA
2CXO J093835.9+520151 09 38 35.95 +52 01 51.96 7.17 CHANDRA
2CXO J093833.3+520154 09 38 33.31 +52 01 54.12 7.36 CHANDRA
13 CXOGSG J093902.9+520254 09 39 02.93 +52 02 54.24 7.92 CHANDRA
2CXO J093902.8+520254 09 39 02.88 +52 02 54.96 7.93 CHANDRA
14 2CXO J093816.2+520052 09 38 16.25 +52 00 52.56 7.98 CHANDRA
15 2CXO J093805.7+515922 09 38 05.74 +51 59 22.56 8.33 CHANDRA
CXOGSG J093805.7+515922 09 38 05.71 +51 59 22.56 8.33 CHANDRA
16 2RXS J093820.4+520157 09 38 20.45 +52 01 57.72 8.39 ROSAT
2RXS J093820.4+520157 09 38 20.45 +52 01 57.72 8.39 ROSAT
17 CXOGSG J093806.2+515957 09 38 06.26 +51 59 57.12 8.57 CHANDRA
2CXO J093806.1+515957 09 38 06.14 +51 59 57.48 8.59 CHANDRA
18 2CXO J093822.1+520247X 09 38 22.18 +52 02 47.04 8.93 CHANDRA
CXOGSG J093821.3+520259 09 38 21.38 +52 02 58.92 9.17 CHANDRA
19 2CXO J093833.5+520354 09 38 33.60 +52 03 55.08 9.23 CHANDRA
20 2RXS J093823.2+520317 09 38 23.28 +52 03 17.28 9.28 ROSAT
2RXS J093823.2+520317 09 38 23.28 +52 03 17.28 9.28 ROSAT
1RXS J093822.8+520315 09 38 22.80 +52 03 15.12 9.29 ROSAT
1RXS J093822.8+520315 09 38 22.80 +52 03 15.12 9.29 ROSAT
1RXS J093822.8+520315 09 38 22.80 +52 03 15.12 9.29 ROSAT
21 2CXO J093858.0+520429 09 38 58.01 +52 04 30.00 9.39 CHANDRA
CXOGSG J093857.9+520431 09 38 57.98 +52 04 31.44 9.41 CHANDRA
22 CXOGSG J093819.3+520306 09 38 19.39 +52 03 06.84 9.44 CHANDRA
23 2CXO J093854.6+520435 09 38 54.62 +52 04 35.40 9.45 CHANDRA
24 2CXO J093830.1+520359 09 38 30.10 +52 03 59.04 9.47 CHANDRA
CXOGSG J093830.1+520358 09 38 30.05 +52 03 59.04 9.48 CHANDRA
25 2CXO J093846.8+520442 09 38 46.82 +52 04 42.60 9.60 CHANDRA
26 CXOGSG J093812.0+520334 09 38 11.95 +52 03 33.84 10.46 CHANDRA
2CXO J093811.9+520334 09 38 11.98 +52 03 34.20 10.46 CHANDRA
27 2CXO J093803.1+520238 09 38 03.19 +52 02 38.76 10.65 CHANDRA
CXOGSG J093803.2+520238 09 38 03.17 +52 02 38.40 10.65 CHANDRA
28 2CXO J093857.3+520557 09 38 57.31 +52 05 57.12 10.83 CHANDRA
29 CXOGSG J093815.4+520426 09 38 15.41 +52 04 26.40 10.89 CHANDRA
2CXO J093815.4+520426 09 38 15.43 +52 04 26.40 10.89 CHANDRA
30 2CXO J093756.8+520157 09 37 56.83 +52 01 57.36 10.93 CHANDRA
31 CXOGSG J093802.6+520313 09 38 02.64 +52 03 13.32 11.12 CHANDRA
2CXO J093802.6+520313 09 38 02.64 +52 03 13.32 11.12 CHANDRA
32 2CXO J093805.2+520336 09 38 05.23 +52 03 36.36 11.14 CHANDRA
CXOGSG J093805.2+520336 09 38 05.18 +52 03 36.36 11.14 CHANDRA
33 2CXO J093739.0+515555 09 37 39.05 +51 55 55.20 11.32 CHANDRA
34 CXOGSG J093809.9+520426 09 38 09.96 +52 04 26.40 11.35 CHANDRA
2CXO J093809.9+520426 09 38 09.94 +52 04 26.40 11.35 CHANDRA
35 2CXO J093756.4+520235 09 37 56.50 +52 02 35.52 11.37 CHANDRA
CXOGSG J093756.5+520235 09 37 56.47 +52 02 35.16 11.37 CHANDRA
36 2CXO J093750.4+520128 09 37 50.45 +52 01 28.92 11.44 CHANDRA
CXOGSG J093750.4+520129 09 37 50.47 +52 01 29.28 11.44 CHANDRA
37 CXOGSG J093814.5+520502 09 38 14.47 +52 05 02.04 11.47 CHANDRA
2CXO J093814.4+520502 09 38 14.47 +52 05 02.04 11.47 CHANDRA
38 CXOGSG J093838.4+520636 09 38 38.45 +52 06 36.36 11.65 CHANDRA
2CXO J093838.4+520636 09 38 38.45 +52 06 36.36 11.65 CHANDRA
2CXO J093736.9+515603 09 37 36.91 +51 56 03.84 11.66 CHANDRA
39 2CXO J093744.0+520045 09 37 44.09 +52 00 45.36 11.91 CHANDRA
CXOGSG J093744.1+520045 09 37 44.06 +52 00 45.72 11.92 CHANDRA
40 2CXO J093820.7+520638 09 38 20.71 +52 06 38.88 12.48 CHANDRA
41 2CXO J093747.6+520305 09 37 47.66 +52 03 05.76 12.74 CHANDRA
CXOGSG J093747.6+520305 09 37 47.66 +52 03 05.76 12.74 CHANDRA
42 CXOGSG J093755.4+520634 09 37 55.42 +52 06 33.84 14.38 CHANDRA
2CXO J093755.4+520634 09 37 55.42 +52 06 34.20 14.39 CHANDRA
43 CXOGSG J093740.7+520539 09 37 40.70 +52 05 39.12 15.22 CHANDRA
2CXO J093740.6+520539 09 37 40.70 +52 05 39.12 15.22 CHANDRA

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
WN 0935.5+5208 09 38 54.00 +51 55 12.00 0.27 WENSS
TGSSADR J093854.2+515511 09 38 54.31 +51 55 10.92 0.31 GMRTAS150M
FIRST J093854.3+515513 09 38 54.41 +51 55 13.08 0.32 FIRST
1 NVSS J093854+515512 09 38 54.41 +51 55 13.08 0.33 NVSS
2 PGC 27475 09 38 28.80 +51 58 03.00 4.64 PGC2003
QORG J093911.6+515123 09 39 11.59 +51 51 23.04 4.80 QORGCAT
3 FIRST J093911.9+515123 09 39 11.90 +51 51 24.12 4.82 FIRST
4 09353+5204 09 38 41.62 +51 50 26.88 4.99 ZCAT
5 PGC 27478 09 38 30.60 +51 59 17.88 5.33 PGC2003
6 UZC J093841.1+514934 09 38 41.11 +51 49 33.96 5.85 UZC
PGC 27496 09 38 41.21 +51 49 32.88 5.86 PGC2003
FIRST J093844.8+514848 09 38 44.81 +51 48 48.96 6.45 FIRST
QORG J093844.4+514843 09 38 44.40 +51 48 42.84 6.55 QORGCAT
7 NVSS J093844+514842 09 38 44.21 +51 48 42.84 6.56 NVSS
FIRST J093844.0+514840 09 38 44.11 +51 48 39.96 6.60 FIRST
FIRST J093907.4+520212 09 39 07.51 +52 02 12.84 7.44 FIRST
QORG J093829.7+520148 09 38 29.71 +52 01 48.00 7.51 QORGCAT
8 NVSS J093907+520216 09 39 07.99 +52 02 16.08 7.52 NVSS
FIRST J093829.8+520152 09 38 29.90 +52 01 53.04 7.56 FIRST
9 NVSS J093829+520151 09 38 29.40 +52 01 51.96 7.58 NVSS
FIRST J093907.7+520222 09 39 07.80 +52 02 21.84 7.60 FIRST
TGSSADR J093829.5+520154 09 38 29.50 +52 01 54.84 7.62 GMRTAS150M
7C 093505.4+521530 09 38 29.40 +52 01 57.00 7.66 UC7C151MHZ
WN 0935.0+5215 09 38 27.41 +52 02 03.84 7.91 WENSS
FIRST J093814.2+514948 09 38 14.30 +51 49 49.08 7.94 FIRST
10 NVSS J093814+514947 09 38 14.21 +51 49 48.00 7.96 NVSS
TGSSADR J093814.2+514946 09 38 14.30 +51 49 46.92 7.96 GMRTAS150M
11 NVSS J093807+515104 09 38 07.99 +51 51 05.04 7.97 NVSS
7C 093450.5+520318 09 38 14.21 +51 49 45.84 7.97 UC7C151MHZ
TGSSADR J093807.7+515106 09 38 07.70 +51 51 06.84 7.98 GMRTAS150M
WN 0934.8+5203 09 38 13.51 +51 49 51.96 7.98 WENSS
FIRST J093807.8+515103 09 38 07.90 +51 51 03.96 7.98 FIRST
WN 0934.8+5203B 09 38 14.11 +51 49 45.12 7.99 WENSS
FIRST J093813.1+514952 09 38 13.20 +51 49 51.96 8.03 FIRST
FIRST J093802.6+515733 09 38 02.59 +51 57 33.84 8.03 FIRST
WN 0934.8+5203A 09 38 07.51 +51 51 03.96 8.03 WENSS
12 NVSS J093800+515432 09 38 00.10 +51 54 33.12 8.08 NVSS
FIRST J093826.8+514758 09 38 26.90 +51 47 58.92 8.18 FIRST
13 NVSS J093826+514756 09 38 27.00 +51 47 57.12 8.20 NVSS
WN 0936.1+5203 09 39 34.51 +51 50 06.00 8.25 WENSS
FIRST J093758.9+515431 09 37 58.99 +51 54 32.04 8.25 FIRST
QORG J093801.0+515736 09 38 01.01 +51 57 36.00 8.28 QORGCAT
14 NVSS J093801+515740 09 38 01.10 +51 57 39.96 8.28 NVSS
FIRST J093934.7+515002 09 39 34.80 +51 50 03.12 8.30 FIRST
15 NVSS J093935+515004 09 39 35.11 +51 50 03.84 8.34 NVSS
16 SDSS J09379+5156 09 37 57.31 +51 56 09.96 8.54 VERONCAT
17 FIRST J093757.8+515809 09 37 57.91 +51 58 09.84 8.92 FIRST
18 NVSS J093820+520252 09 38 20.50 +52 02 52.08 9.15 NVSS
19 WD 0936+522 09 39 37.68 +52 01 36.48 9.51 MCKSION
20 ZW 0934+5216 09 38 12.00 +52 02 27.60 9.59 ZWCLUSTERS
QORG J093937.8+520145 09 39 37.80 +52 01 45.12 9.62 QORGCAT
21 PGC 2405727 09 39 31.51 +52 03 20.16 10.17 PGC2003
22 VLSSr J093808.1+520254 09 38 08.11 +52 02 53.88 10.32 VLSSR
23 PGC 2406486 09 39 04.61 +52 05 21.84 10.39 PGC2003
FIRST J093812.1+520332 09 38 12.10 +52 03 33.12 10.43 FIRST
TGSSADR J093746.0+515251 09 37 46.01 +51 52 51.96 10.48 GMRTAS150M
FIRST J093745.9+515251 09 37 46.01 +51 52 51.96 10.49 FIRST
24 NVSS J093745+515251 09 37 45.91 +51 52 50.88 10.50 NVSS
25 NVSS J093812+520339 09 38 12.29 +52 03 39.96 10.51 NVSS
7C 093439.2+521607 09 38 03.41 +52 02 35.16 10.59 UC7C151MHZ
WN 0934.3+5206 09 37 45.31 +51 52 45.84 10.61 WENSS
26 NVSS J093803+520238 09 38 03.31 +52 02 38.04 10.63 NVSS
FIRST J093803.2+520238 09 38 03.19 +52 02 38.04 10.64 FIRST
TGSSADR J093803.1+520238 09 38 03.19 +52 02 38.04 10.64 GMRTAS150M
WN 0934.6+5216 09 38 03.50 +52 02 40.92 10.65 WENSS
27 GB6 J0937+5202 09 37 58.01 +52 02 22.92 11.06 GB6
28 PGC 2400939 09 37 47.30 +51 49 49.08 11.37 PGC2003
29 SDSS J09376+5156 09 37 37.30 +51 56 00.96 11.60 VERONCAT
30 NVSS J093821+520625 09 38 21.79 +52 06 24.84 12.21 NVSS
31 BD+52 1409 09 40 06.07 +51 59 38.40 12.22 ACRS
PPM 32259 09 40 06.12 +51 59 38.04 12.22 PPM
FIRST J093812.9+514350 09 38 13.01 +51 43 50.16 12.84 FIRST
32 NVSS J093812+514350 09 38 12.89 +51 43 50.88 12.85 NVSS
33 NVSS J094009+520008 09 40 09.19 +52 00 07.92 12.85 NVSS
QORG J093812.9+514350 09 38 12.89 +51 43 50.16 12.85 QORGCAT
QORG J094009.4+520008 09 40 09.41 +52 00 07.92 12.88 QORGCAT
FIRST J094009.6+520007 09 40 09.60 +52 00 07.92 12.91 FIRST
34 TXS 0934+519 09 37 52.01 +51 45 51.84 13.16 TEXAS
35 SDSS J09398+5144 09 39 48.79 +51 44 09.96 14.03 VERONCAT
36 FIRST J093951.6+520558 09 39 51.70 +52 05 58.92 14.17 FIRST
VLSSr J093746.8+514501 09 37 46.80 +51 45 01.08 14.31 VLSSR
7C 093422.9+515833 09 37 46.61 +51 45 02.16 14.33 UC7C151MHZ
37 FIRST J094007.8+514648 09 40 07.80 +51 46 49.08 14.34 FIRST
FIRST J093746.9+514458 09 37 46.99 +51 44 57.84 14.34 FIRST
WN 0934.3+5158 09 37 46.51 +51 45 00.00 14.37 WENSS
38 NVSS J093746+514458 09 37 46.70 +51 44 57.84 14.37 NVSS
TGSSADR J093746.5+514458 09 37 46.61 +51 44 57.84 14.38 GMRTAS150M
39 NVSS J094000+520501 09 40 00.41 +52 05 00.96 14.39 NVSS
40 FIRST J093739.0+514607 09 37 39.00 +51 46 06.96 14.48 FIRST
QORG J093739.0+514606 09 37 39.00 +51 46 05.88 14.50 QORGCAT
FIRST J093743.8+514455 09 37 43.80 +51 44 56.04 14.72 FIRST

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