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 J1632.5+3839

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1632.5+3839 Swift-XRT detections in the field for 4FGL J1632.5+3839


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 16 32 32.34 +38 48 22.29 5.70 (3.6 ± 1.3) x 10-3 20 2.573 2.655
2 16 31 45.09 +38 33 41.02 7.09 (2.7 ± 1.0) x 10-3 10 2.471 2.647
3 16 32 51.08 +38 49 50.34 6.52 (3.0 ± 1.2) x 10-3 11 2.616 2.629
4 16 33 10.57 +38 48 49.76 7.09 (2.4 ± 1.0) x 10-3 8 2.339 2.501

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1632.5+3839 Swift-XRT image with known radio, optical and UV sources for 4FGL J1632.5+3839

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 SDSS J163316.87+384014.4 16 33 16.87 +38 40 14.52 8.91 ROSAT
2 1RXS J163319.4+383958 16 33 19.39 +38 39 58.68 9.38 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 SN 2012ct 16 32 13.92 +38 39 25.20 3.41 ASIAGOSN
FIRST J163240.0+383405 16 32 40.01 +38 34 05.16 5.68 FIRST
2 NVSS J163239+383400 16 32 40.01 +38 34 00.84 5.75 NVSS
3 NVSS J163301+384244 16 33 01.61 +38 42 45.00 6.72 NVSS
FIRST J163302.3+384228 16 33 02.40 +38 42 28.08 6.73 FIRST
4 FIRST J163308.8+384115 16 33 08.81 +38 41 16.08 7.51 FIRST
5 SDSS J16327+3832 16 32 47.90 +38 32 39.12 7.58 VERONCAT
6 FIRST J163254.0+383301 16 32 54.10 +38 33 02.16 7.85 FIRST
7 SDSS J16318+3838 16 31 49.80 +38 38 57.12 8.14 VERONCAT
8 FIRST J163224.4+384804 16 32 24.50 +38 48 05.04 8.67 FIRST
9 V1377 Her 16 31 58.87 +38 45 38.88 8.82 GCVS
10 SDSS J16332+3840 16 33 16.90 +38 40 13.08 8.91 VERONCAT
11 QORG J163319.3+384002 16 33 19.30 +38 40 01.92 9.37 QORGCAT
12 HB93 1630+389 16 32 06.86 +38 47 49.56 9.60 QSO
Q 1630.4+3854 16 32 06.91 +38 47 49.92 9.60 VERONCAT
QORG J163206.7+384750 16 32 06.70 +38 47 49.92 9.62 QORGCAT
FIRST J163316.9+383426 16 33 16.90 +38 34 27.12 10.23 FIRST
13 NVSS J163317+383426 16 33 17.40 +38 34 26.04 10.32 NVSS
QORG J163324.3+384044 16 33 24.31 +38 40 44.04 10.40 QORGCAT
WN 1631.6+3847 16 33 24.60 +38 40 50.16 10.46 WENSS
14 NVSS J163324+384043 16 33 24.79 +38 40 44.04 10.49 NVSS
FIRST J163324.9+384039 16 33 25.01 +38 40 40.08 10.52 FIRST
15 FIRST J163136.7+384305 16 31 36.70 +38 43 05.88 11.25 FIRST
16 FIRST J163142.2+383006 16 31 42.29 +38 30 06.12 13.44 FIRST
17 SAO 65366 16 31 56.47 +38 51 29.52 13.78 SAO
BD+39 3010 16 31 56.40 +38 51 29.52 13.79 ACRS
GN Her 16 31 56.40 +38 51 29.88 13.80 GCVS
PPM 79403 16 31 56.42 +38 51 30.24 13.80 PPM
FIRST J163138.5+385033 16 31 38.59 +38 50 34.08 15.11 FIRST
18 NVSS J163138+385038 16 31 38.30 +38 50 38.04 15.19 NVSS
19 FIRST J163332.0+384955 16 33 32.11 +38 49 55.92 15.77 FIRST

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