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 J2056.7+4938

Field

Detected Excesses

Swift-XRT image of the field for 1FGL J2056.7+4938 Swift-XRT detections in the field for 1FGL J2056.7+4938

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 20 56 42.74 +49 40 07.37 3.52 (3.47 ± 0.05) x 10-1 5745 78.230 72.430
2 20 56 50.07 +49 34 01.57 4.57 (2.0 ± 0.4) x 10-3 52 4.831 4.801
3 20 57 21.98 +49 31 16.27 4.80 (1.1 ± 0.3) x 10-3 28 3.894 3.442

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 20 56 32.74 +49 49 53.99 4.81 (9 ± 3) x 10-4 25 2.771 2.881
2 20 56 28.50 +49 36 31.05 4.56 (10 ± 3) x 10-4 47 3.187 2.798
3 20 57 41.54 +49 36 23.19 4.90 (7 ± 3) x 10-4 22 2.886 2.626
4 20 56 21.37 +49 40 46.87 4.29 (8 ± 4) x 10-4 55 2.588 2.291
5 20 56 33.44 +49 42 02.70 4.27 (7 ± 4) x 10-4 53 2.723 1.725
6 20 56 42.75 +49 40 07.28 3.52 (4 ± 6) x 10-4 5691 3.149 0.589
7 20 56 42.75 +49 40 07.35 3.52 (2 ± 4) x 10-4 5623 2.717 0.482
8 20 56 42.75 +49 40 07.28 3.52 (2 ± 5) x 10-4 5654 3.592 0.435
9 20 56 42.75 +49 40 07.35 3.52 (2 ± 6) x 10-4 5623 3.155 0.350
10 20 56 42.74 +49 40 07.40 3.52 (5 ± 36) x 10-5 5691 3.306 0.126
11 20 56 42.75 +49 40 07.35 3.52 N/A 5635 3.312 N/A
12 20 56 42.75 +49 40 07.28 3.52 N/A 5691 4.568 N/A
13 20 56 42.75 +49 40 07.28 3.52 N/A 5691 3.436 N/A
14 20 56 42.74 +49 40 07.40 3.52 N/A 5691 5.634 N/A
15 20 56 42.74 +49 40 07.37 3.52 N/A 5714 2.902 N/A
16 20 56 42.74 +49 40 07.37 3.52 N/A 5745 5.408 N/A

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 1FGL J2056.7+4938 Swift-XRT image with known radio, optical and UV sources for 1FGL J2056.7+4938

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 IGR J20569+4940 20 56 41.28 +49 39 25.20 0.88 INTEGRAL
IGR J20569+4940 20 56 42.72 +49 39 36.00 0.99 INTEGRAL
2 XMMSL2 J205642.3+494004 20 56 42.72 +49 40 02.64 1.43 XMM-NEWTON
null 20 56 42.96 +49 40 03.36 1.43 EXOSAT
XMMSL2 J205642.3+494004 20 56 42.29 +49 40 04.08 1.46 XMM-NEWTON
XMMSL2 J205642.3+494004 20 56 43.61 +49 40 06.60 1.49 XMM-NEWTON
XMMSL2 J205642.3+494004 20 56 42.14 +49 40 06.24 1.50 XMM-NEWTON
IGR J20569+4940 20 56 42.70 +49 40 06.96 1.50 INTEGRAL
IGR J20569+4940 20 56 42.72 +49 40 08.40 1.52 INTEGRAL
IGR J20569+4940 20 56 42.60 +49 40 09.12 1.54 INTEGRAL
XMMSL2 J205642.3+494004 20 56 42.43 +49 40 09.48 1.55 XMM-NEWTON
1RXS J205644.3+494011 20 56 44.30 +49 40 10.92 1.57 ROSAT
1RXS J205644.3+494011 20 56 44.30 +49 40 11.64 1.57 ROSAT
BD+49 3420 20 56 42.00 +49 40 17.76 1.69 ROSAT
2RXS J205643.7+494019 20 56 43.70 +49 40 18.84 1.70 ROSAT
3 IGR J202569+4940 20 56 40.80 +49 40 48.00 2.25 BEPPOSAX

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 MITG J2056+4938 20 56 46.99 +49 38 38.04 0.56 MITGB6CM
2 GB6 J2056+4939 20 56 40.30 +49 39 34.92 1.09 GB6
2055+4928 20 56 41.21 +49 39 47.16 1.22 NORTH6CM
AMIGPS J205642+494003 20 56 42.60 +49 40 04.08 1.45 AMIGPS16GH
WN 2055.0+4928 20 56 42.70 +49 40 04.08 1.45 WENSS
TGSSADR J205642.6+494004 20 56 42.70 +49 40 05.16 1.47 GMRTAS150M
CGPS J205642+494005 20 56 42.79 +49 40 05.88 1.48 CGPSNGPCAT
3 NVSS J205642+494005 20 56 42.70 +49 40 05.88 1.48 NVSS
TXS 2054+494B 20 56 30.91 +49 37 55.92 2.15 TEXAS
4 NVSS J205629+493756 20 56 29.90 +49 37 55.92 2.30 NVSS
TGSSADR J205629.9+493749 20 56 29.90 +49 37 50.16 2.34 GMRTAS150M
CGPS J205630+493742 20 56 30.10 +49 37 41.88 2.36 CGPSNGPCAT
VLSSr J205630.1+493736 20 56 30.19 +49 37 36.84 2.38 VLSSR
7C 205452.8+492559 20 56 30.19 +49 37 33.96 2.40 GP7C151MHZ
WN 2054.8+4925 20 56 30.00 +49 37 35.04 2.43 WENSS
5 NVSS J205630+493659 20 56 30.19 +49 36 59.04 2.71 NVSS
TGSSADR J205630.0+493659 20 56 30.10 +49 36 59.04 2.72 GMRTAS150M
6 4C+49.35 20 56 35.59 +49 36 11.16 2.75 DIXON
7 4CP49.35 20 56 06.19 +49 40 27.84 6.31 DIXON
CR 50T237.4 20 56 06.19 +49 40 27.84 6.31 DIXON
8 2054+4924 20 56 04.80 +49 36 28.08 6.63 NORTH6CM
9 NVSS J205601+493535 20 56 01.70 +49 35 35.88 7.41 NVSS
CGPS J205601+493537 20 56 01.51 +49 35 36.96 7.44 CGPSNGPCAT
WN 2054.2+4924B 20 56 01.39 +49 35 38.04 7.45 WENSS
TGSSADR J205601.1+493538 20 56 01.20 +49 35 39.12 7.47 GMRTAS150M
VLSSr J205553.5+493540 20 55 53.50 +49 35 40.92 8.61 VLSSR
WN 2054.2+4924 20 55 52.99 +49 35 39.84 8.70 WENSS
7C 205415.4+492411 20 55 52.70 +49 35 44.16 8.72 GP7C151MHZ
CGPS J205552+493542 20 55 52.70 +49 35 43.08 8.72 CGPSNGPCAT
TXS 2054+494A 20 55 52.51 +49 35 47.04 8.73 TEXAS
10 NVSS J205552+493541 20 55 52.70 +49 35 42.00 8.74 NVSS
WN 2054.2+4924A 20 55 52.70 +49 35 39.84 8.75 WENSS
TGSSADR J205552.6+493541 20 55 52.61 +49 35 42.00 8.75 GMRTAS150M
VLSSr J205720.6+493111 20 57 20.59 +49 31 10.92 9.57 VLSSR
7C 205543.1+491935 20 57 20.90 +49 31 13.08 9.57 GP7C151MHZ
11 NVSS J205720+493109 20 57 20.90 +49 31 09.12 9.62 NVSS
CGPS J205720+493109 20 57 20.90 +49 31 09.12 9.62 CGPSNGPCAT
WN 2055.7+4919 20 57 20.69 +49 31 06.96 9.63 WENSS
TGSSADR J205720.9+493107 20 57 20.90 +49 31 08.04 9.64 GMRTAS150M
12 CGPS J205736+493320 20 57 36.70 +49 33 20.16 10.10 CGPSNGPCAT
13 NVSS J205537+493644 20 55 37.30 +49 36 43.92 10.89 NVSS
14 TXS 2055+493 20 57 26.30 +49 30 11.88 10.92 TEXAS
CGPS J205536+493648 20 55 36.10 +49 36 47.88 11.08 CGPSNGPCAT
15 GB6 J2057+4929 20 57 27.79 +49 29 43.08 11.44 GB6
16 CGPS J205752+493144 20 57 52.90 +49 31 44.04 13.19 CGPSNGPCAT
GB6 J2057+4947 20 57 55.70 +49 47 53.16 14.90 GB6
TGSSADR J205754.3+494812 20 57 54.41 +49 48 12.96 14.94 GMRTAS150M
17 NVSS J205754+494813 20 57 54.41 +49 48 14.04 14.95 NVSS
18 CGPS J205742+495008 20 57 42.60 +49 50 08.16 14.95 CGPSNGPCAT
CGPS J205754+494814 20 57 54.41 +49 48 14.04 14.96 CGPSNGPCAT
WN 2056.2+4936 20 57 54.60 +49 48 15.12 14.99 WENSS

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