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 J0039.2+4331

Field

Detected Excesses
Swift-XRT image of the field for 1FGL J0039.2+4331 Swift-XRT detections in the field for 1FGL J0039.2+4331

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 00 38 57.99 +43 29 46.57 5.59 (6.1 ± 1.3) x 10-3 29 4.637 4.710
2 00 39 11.74 +43 28 07.10 6.31 (3.2 ± 1.0) x 10-3 19 3.129 3.262
3 00 39 08.45 +43 30 15.48 6.31 (3.2 ± 1.0) x 10-3 18 3.014 3.207

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 00 39 37.47 +43 38 07.74 6.41 (2.5 ± 0.9) x 10-3 14 3.124 2.916
2 00 38 22.36 +43 26 37.67 6.04 (2.5 ± 0.9) x 10-3 12 2.973 2.859
3 00 39 38.25 +43 34 43.15 5.96 (2.0 ± 0.8) x 10-3 16 2.602 2.501
4 00 38 43.78 +43 22 56.66 6.65 (1.9 ± 0.8) x 10-3 10 2.383 2.448
5 00 39 30.04 +43 37 23.53 6.21 (1.8 ± 0.8) x 10-3 13 2.509 2.359

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 1FGL J0039.2+4331 Swift-XRT image with known radio, optical and UV sources for 1FGL J0039.2+4331

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2RXS J003859.8+432946 00 38 59.86 +43 29 46.68 2.91 ROSAT
2RXS J003859.8+432946 00 38 59.86 +43 29 46.68 2.91 ROSAT
SWIFT J003858.5+432950 00 38 58.54 +43 29 50.64 3.08 SWIFT
2 SWIFT J003937.3+433817 00 39 37.32 +43 38 17.52 8.21 SWIFT
3 SWIFT J003823.0+432637 00 38 23.90 +43 26 37.68 10.27 SWIFT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
[SPT2015] VLA J0039+433A 00 39 08.21 +43 30 15.12 1.44 FER2FUSRID
1 NVSS J003907+433015 00 39 07.90 +43 30 15.84 1.46 NVSS
[SPT2015] VLA J0039+4330 00 39 01.90 +43 30 29.16 2.26 FER2FUSRID
2 [SPT2015] VLA J0039+4332 00 39 22.80 +43 32 52.08 2.30 FER2FUSRID
3 NVSS J003901+433021 00 39 01.61 +43 30 21.96 2.35 NVSS
VLSSr J003928.6+433647 00 39 28.61 +43 36 47.16 6.13 VLSSR
4 NVSS J003928+433651 00 39 28.51 +43 36 51.12 6.18 NVSS
WN 0036.7+4320 00 39 28.61 +43 36 51.12 6.19 WENSS
[SPT2015] VLA J0039+4336 00 39 28.70 +43 36 51.12 6.20 FER2FUSRID
TGSSADR J003928.6+433652 00 39 28.70 +43 36 52.92 6.22 GMRTAS150M
5 NVSS J003941+432740 00 39 41.59 +43 27 41.04 6.25 NVSS
7C 003644.2+432028 00 39 28.39 +43 36 56.16 6.25 UC7C151MHZ
6 0036+4320 00 39 26.21 +43 37 14.16 6.36 NORTH6CM
GB6 J0039+4337 00 39 27.50 +43 37 27.84 6.67 GB6
WN 0035.4+4321B 00 38 11.40 +43 37 35.04 12.88 WENSS
TGSSADR J003811.1+433734 00 38 11.21 +43 37 33.96 12.91 GMRTAS150M
7 NVSS J003810+433732 00 38 10.90 +43 37 32.88 12.94 NVSS
7C 003526.9+432120 00 38 10.80 +43 37 49.08 13.09 UC7C151MHZ
TGSSADR J003824.9+434112 00 38 24.91 +43 41 12.84 13.25 GMRTAS150M
8 NVSS J003824+434111 00 38 24.79 +43 41 12.12 13.25 NVSS
7C 003540.5+432440 00 38 24.50 +43 41 08.88 13.26 UC7C151MHZ
WN 0035.6+4324 00 38 24.91 +43 41 12.84 13.27 WENSS
VLSSr J003825.8+434124 00 38 25.80 +43 41 24.00 13.28 VLSSR
9 WN 0035.4+4321 00 38 08.21 +43 38 26.88 13.82 WENSS
10 NVSS J004001+434227 00 40 01.70 +43 42 27.00 14.16 NVSS

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