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.

1FGL J0541.1+3542c

Field

Detected Excesses

Swift-XRT image of the field for 1FGL J0541.1+3542c Swift-XRT detections in the field for 1FGL J0541.1+3542c


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 05 40 51.98 +35 41 35.62 5.44 (2.2 ± 1.0) x 10-3 25 3.246 2.192
2 05 40 51.96 +35 41 30.72 5.40 (1.4 ± 1.0) x 10-3 24 2.561 1.437

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 1FGL J0541.1+3542c Swift-XRT image with known radio, optical and UV sources for 1FGL J0541.1+3542c

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 3XMM J054106.3+354058 05 41 06.36 +35 40 58.80 1.58 XMM-NEWTON
2 3XMM J054054.8+354214 05 40 54.82 +35 42 14.76 2.55 XMM-NEWTON
3 3XMM J054120.3+354245 05 41 20.38 +35 42 45.00 2.66 XMM-NEWTON
4 3XMM J054120.5+354213 05 41 20.57 +35 42 14.04 2.71 XMM-NEWTON
5 3XMM J054053.8+354252 05 40 53.83 +35 42 52.56 2.76 XMM-NEWTON
6 3XMM J054054.7+354406 05 40 54.72 +35 44 06.72 3.00 XMM-NEWTON
7 3XMM J054053.1+354134 05 40 53.14 +35 41 34.44 3.03 XMM-NEWTON
8 3XMM J054110.8+353929 05 41 10.87 +35 39 29.16 3.15 XMM-NEWTON
9 3XMM J054056.8+354502 05 40 56.88 +35 45 02.52 3.27 XMM-NEWTON
3XMM J054051.0+354149 05 40 51.31 +35 41 49.20 3.38 XMM-NEWTON
10 3XMM J054054.0+354018 05 40 54.70 +35 40 18.84 3.49 XMM-NEWTON
3XMM J054054.0+353957 05 40 54.91 +35 39 57.60 3.73 XMM-NEWTON
11 3XMM J054050.8+354054 05 40 50.81 +35 40 54.48 3.73 XMM-NEWTON
12 3XMM J054059.5+354556 05 40 59.52 +35 45 56.16 3.74 XMM-NEWTON
13 3XMM J054053.2+353933 05 40 53.28 +35 39 33.84 4.13 XMM-NEWTON
14 3XMM J054051.2+353830 05 40 51.26 +35 38 30.12 5.19 XMM-NEWTON
15 3XMM J054056.1+353727 05 40 56.11 +35 37 27.84 5.57 XMM-NEWTON
16 3XMM J054048.4+353810 05 40 48.48 +35 38 11.04 5.80 XMM-NEWTON
17 3XMM J054040.4+354440 05 40 40.51 +35 44 40.92 5.84 XMM-NEWTON
18 3XMM J054136.1+354315 05 41 36.12 +35 43 15.60 5.89 XMM-NEWTON
19 3XMM J054053.6+353717 05 40 53.59 +35 37 17.40 5.95 XMM-NEWTON
20 3XMM J054131.8+353821 05 41 31.82 +35 38 21.12 6.51 XMM-NEWTON
21 3XMM J054036.5+354424 05 40 36.55 +35 44 24.72 6.51 XMM-NEWTON
22 3XMM J054033.5+354013 05 40 33.50 +35 40 13.80 7.24 XMM-NEWTON
23 3XMM J054101.9+353430 05 41 01.99 +35 34 30.00 8.12 XMM-NEWTON
24 3XMM J054112.5+353428 05 41 12.60 +35 34 28.20 8.15 XMM-NEWTON
25 3XMM J054145.4+353935 05 41 45.43 +35 39 35.28 8.29 XMM-NEWTON
26 3XMM J054128.7+353456 05 41 28.73 +35 34 55.92 8.77 XMM-NEWTON
27 3XMM J054035.9+353617 05 40 35.98 +35 36 17.64 8.92 XMM-NEWTON
28 3XMM J054031.3+353716 05 40 31.32 +35 37 16.32 9.01 XMM-NEWTON
29 3XMM J054111.4+353323 05 41 11.47 +35 33 23.40 9.19 XMM-NEWTON
30 3XMM J054057.2+353332 05 40 57.29 +35 33 32.40 9.23 XMM-NEWTON
31 3XMM J054046.3+353339 05 40 46.32 +35 33 39.24 9.86 XMM-NEWTON
32 3XMM J054101.7+353150 05 41 01.75 +35 31 50.16 10.77 XMM-NEWTON
33 3XMM J054105.7+353124 05 41 05.76 +35 31 24.24 11.15 XMM-NEWTON
3XMM J054100.1+353128 05 41 00.17 +35 31 28.56 11.16 XMM-NEWTON
34 3XMM J054105.3+353045 05 41 05.38 +35 30 45.36 11.79 XMM-NEWTON
35 3XMM J054017.3+353628 05 40 17.33 +35 36 28.80 11.83 XMM-NEWTON
36 3XMM J054009.4+354706 05 40 09.43 +35 47 06.00 12.59 XMM-NEWTON
37 3XMM J054013.9+353558 05 40 13.97 +35 35 58.20 12.67 XMM-NEWTON
38 3XMM J054022.9+353317 05 40 22.94 +35 33 17.28 12.92 XMM-NEWTON
39 3XMM J054009.3+353712 05 40 09.34 +35 37 12.72 12.92 XMM-NEWTON
40 3XMM J054014.8+353408 05 40 14.90 +35 34 08.40 13.56 XMM-NEWTON
41 3XMM J054009.6+353056 05 40 09.67 +35 30 56.88 16.48 XMM-NEWTON

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J054107+354101 05 41 07.61 +35 41 02.04 1.52 NVSS
2 NVSS J054106+353955 05 41 06.79 +35 39 56.16 2.62 NVSS
3 BG 0537+35 05 40 58.51 +35 44 30.12 2.65 DIXON
0537+3541 05 40 52.90 +35 42 34.92 2.93 NORTH6CM
TXS 0537+356 05 40 52.90 +35 42 16.92 2.93 TEXAS
4 NVSS J054052+354218 05 40 52.70 +35 42 19.08 2.97 NVSS
CGPS J054052+354219 05 40 52.70 +35 42 19.08 2.97 CGPSNGPCAT
WN 0537.5+3540 05 40 52.10 +35 42 15.84 3.11 WENSS
5 MITG J0540+3542 05 40 50.40 +35 42 43.92 3.43 MITGB6CM
6 NVSS J054113+353921 05 41 13.51 +35 39 20.88 3.44 NVSS
7 NVSS J054051+353833 05 40 51.60 +35 38 33.00 5.12 NVSS
CGPS J054051+353831 05 40 51.50 +35 38 30.84 5.15 CGPSNGPCAT
WN 0537.5+3536 05 40 52.10 +35 38 24.00 5.18 WENSS
WN 0538.1+3538 05 41 29.90 +35 39 36.00 5.45 WENSS
8 NVSS J054129+353923 05 41 29.59 +35 39 23.04 5.52 NVSS
CGPS J054129+353930 05 41 30.00 +35 39 29.88 5.52 CGPSNGPCAT
9 NVSS J054102+354916 05 41 02.11 +35 49 15.96 6.80 NVSS
10 OG+362.5 05 40 50.71 +35 48 30.96 6.85 DIXON
WN 0537.6+3549B 05 41 00.60 +35 49 27.12 7.04 WENSS
11 NVSS J054033+354508 05 40 33.60 +35 45 09.00 7.31 NVSS
12 NVSS J054111+355026 05 41 11.59 +35 50 26.16 7.94 NVSS
13 PCCS2 070 G173.61+02.79 05 41 00.19 +35 50 21.84 7.94 PCCS070GHZ
WN 0537.2+3546 05 40 37.61 +35 47 44.16 7.95 WENSS
14 NVSS J054037+354745 05 40 37.20 +35 47 45.96 8.04 NVSS
[SPT2015] VLA J0540+3547 05 40 37.51 +35 47 53.16 8.07 FER2FUSRID
CGPS J054037+354751 05 40 37.10 +35 47 52.08 8.11 CGPSNGPCAT
15 [SPT2015] VLA J0540+3549 05 40 43.70 +35 49 05.88 8.11 FER2FUSRID
16 CGPS J054046+354936 05 40 46.70 +35 49 36.12 8.21 CGPSNGPCAT
17 CGPS J054057+355033 05 40 57.60 +35 50 33.00 8.24 CGPSNGPCAT
18 NVSS J054051+353454 05 40 51.50 +35 34 54.84 8.28 NVSS
WN 0537.6+3549 05 40 59.71 +35 50 44.88 8.34 WENSS
GB6 J0540+3550 05 40 59.90 +35 50 48.84 8.41 GB6
PCCS2 044 G173.60+02.77 05 40 52.10 +35 50 24.00 8.43 PCCS044GHZ
19 0537+3549 05 41 00.00 +35 50 52.08 8.46 NORTH20CM
0537+3549 05 41 00.00 +35 50 52.08 8.46 NORTH6CM
20 NVSS J054029+354614 05 40 29.21 +35 46 14.16 8.56 NVSS
WN 0537.6+3549A 05 40 59.59 +35 51 00.00 8.60 WENSS
21 NVSS J054103+355106 05 41 03.41 +35 51 06.84 8.60 NVSS
22 NVSS J054053+355042 05 40 53.81 +35 50 42.00 8.61 NVSS
7C 053736.8+354930 05 40 58.61 +35 51 00.00 8.64 GP7C151MHZ
7C 053739.8+354942 05 41 01.61 +35 51 11.88 8.73 GP7C151MHZ
B2.3 0537+35 05 40 58.61 +35 51 06.12 8.74 DIXON
MITG J0541+3551 05 41 00.79 +35 51 14.04 8.79 MITGB6CM
23 7C 053709.0+354607 05 40 30.70 +35 47 39.12 9.02 GP7C151MHZ
24 GPA 173.61+2.84 05 41 11.30 +35 51 42.84 9.21 GPA
25 CGPS J054105+355147 05 41 05.11 +35 51 47.88 9.26 CGPSNGPCAT
26 7C 053730.1+354952 05 40 51.91 +35 51 23.04 9.37 GP7C151MHZ
27 NVSS J054053+353331 05 40 53.59 +35 33 32.04 9.43 NVSS
28 NVSS J054059+355229 05 40 59.81 +35 52 28.92 10.06 NVSS
CGPS J054153+353846 05 41 53.50 +35 38 47.04 10.11 CGPSNGPCAT
29 NVSS J054153+353845 05 41 53.59 +35 38 45.96 10.14 NVSS
30 PCCS2 030 G173.57+02.79 05 40 51.79 +35 52 12.00 10.15 PCCS030GHZ
31 NVSS J054021+354650 05 40 21.60 +35 46 50.88 10.23 NVSS
GB6 J0541+3538 05 41 55.90 +35 38 38.04 10.62 GB6
32 NVSS J054101+353149 05 41 01.90 +35 31 50.16 10.77 NVSS
CGPS J054102+353148 05 41 01.99 +35 31 48.00 10.79 CGPSNGPCAT
WN 0537.6+3530 05 41 01.90 +35 31 42.96 10.89 WENSS
33 CGPS J054019+354812 05 40 19.70 +35 48 12.96 11.20 CGPSNGPCAT
[SPT2015] VLA J0540+3548 05 40 19.80 +35 48 15.12 11.21 FER2FUSRID
34 NVSS J054122+355414 05 41 22.80 +35 54 14.04 12.11 NVSS
35 NVSS J054132+355401 05 41 32.59 +35 54 01.08 12.56 NVSS

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