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 J1634.7+0235

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1634.7+0235 Swift-XRT detections in the field for 4FGL J1634.7+0235

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 16 34 55.01 +02 25 55.16 5.24 (4.6 ± 1.4) x 10-3 21 3.557 3.348

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 16 34 39.91 +02 27 52.02 5.40 (4.1 ± 1.4) x 10-3 21 3.110 2.968
2 16 34 20.75 +02 27 55.94 6.65 (2.8 ± 1.0) x 10-3 12 2.565 2.807
3 16 34 23.27 +02 24 30.42 6.12 (2.9 ± 1.0) x 10-3 14 2.850 2.759
4 16 34 34.95 +02 28 40.87 5.17 (3.6 ± 1.3) x 10-3 23 3.436 2.735
5 16 34 25.96 +02 29 46.45 5.31 (2.7 ± 1.1) x 10-3 21 2.548 2.546
6 16 33 58.69 +02 33 23.67 5.40 (2.7 ± 1.1) x 10-3 18 2.764 2.490
7 16 33 47.03 +02 35 03.56 5.70 (2.5 ± 1.1) x 10-3 10 2.435 2.332
8 16 33 55.41 +02 33 53.15 5.35 (2.7 ± 1.2) x 10-3 12 2.446 2.304

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1634.7+0235 Swift-XRT image with known radio, optical and UV sources for 4FGL J1634.7+0235


No known X-ray or gamma ray sources found.

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J163435+023644 16 34 35.21 +02 36 43.92 2.85 NVSS
TGSSADR J163509.4+023726 16 35 09.50 +02 37 26.04 6.74 GMRTAS150M
2 NVSS J163509+023724 16 35 09.60 +02 37 23.88 6.77 NVSS
3 NVSS J163443+024218 16 34 43.39 +02 42 19.08 7.29 NVSS
4 TGSSADR J163515.8+023318 16 35 15.91 +02 33 18.00 8.08 GMRTAS150M
5 NVSS J163511+023039 16 35 11.50 +02 30 39.96 8.09 NVSS
6 NVSS J163410+023626 16 34 10.01 +02 36 27.00 8.67 NVSS
TGSSADR J163414.7+022758 16 34 14.71 +02 27 59.04 10.21 GMRTAS150M
7 NVSS J163414+022757 16 34 14.71 +02 27 56.88 10.23 NVSS
TGSSADR J163420.9+024333 16 34 20.90 +02 43 32.88 10.33 GMRTAS150M
8 NVSS J163420+024335 16 34 20.90 +02 43 35.04 10.37 NVSS
QORG J163420.8+024338 16 34 20.81 +02 43 37.92 10.41 QORGCAT
GLEAM J163420+024358 16 34 20.21 +02 43 59.16 10.79 GLEAMEGCAT
QORG J163526.0+023759 16 35 25.99 +02 37 59.16 10.83 QORGCAT
9 NVSS J163526+023801 16 35 26.21 +02 38 00.96 10.88 NVSS
10 NVSS J163511+024339 16 35 11.30 +02 43 39.00 10.95 NVSS
11 NVSS J163434+024628 16 34 34.30 +02 46 27.84 11.71 NVSS
TGSSADR J163434.2+024628 16 34 34.30 +02 46 28.92 11.72 GMRTAS150M
GLEAM J163433+024628 16 34 33.89 +02 46 28.92 11.74 GLEAMEGCAT
12 PGC 1236975 16 34 24.10 +02 46 15.96 12.32 PGC2003
13 NVSS J163528+024311 16 35 28.20 +02 43 12.00 13.69 NVSS
14 SAO 121711 16 35 15.24 +02 46 58.80 14.23 SAO
PPM 162835 16 35 15.31 +02 46 58.44 14.24 PPM
BD+03 3227 16 35 15.36 +02 46 58.08 14.24 ACRS

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