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 J0737.4-3239

Field

Detected Excesses

Swift-XRT image of the field for 1FGL J0737.4-3239 Swift-XRT detections in the field for 1FGL J0737.4-3239

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 07 37 38.75 -32 32 58.02 5.02 (3.7 ± 0.8) x 10-3 31 4.604 4.393
2 07 37 13.82 -32 36 33.46 4.97 (3.8 ± 0.9) x 10-3 35 4.293 4.305
3 07 37 14.51 -32 23 39.69 5.82 (1.7 ± 0.6) x 10-3 13 2.813 3.105

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 07 37 53.68 -32 38 27.99 6.21 (1.5 ± 0.6) x 10-3 15 2.372 2.635
2 07 37 37.93 -32 42 12.06 5.76 (1.5 ± 0.6) x 10-3 19 3.023 2.542
3 07 37 34.93 -32 38 10.34 5.53 (1.6 ± 0.6) x 10-3 27 2.529 2.518
4 07 36 34.55 -32 32 52.92 5.89 (1.3 ± 0.5) x 10-3 13 2.571 2.503
5 07 37 53.04 -32 36 37.96 5.89 (1.1 ± 0.5) x 10-3 18 2.365 2.229

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 1FGL J0737.4-3239 Swift-XRT image with known radio, optical and UV sources for 1FGL J0737.4-3239


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
PGC 77803 07 37 35.59 -32 44 31.92 5.27 PGC2003
CGMW 2-1038 07 37 35.62 -32 44 32.28 5.28 CGMW
1 NVSS J073736-324431 07 37 36.19 -32 44 30.84 5.31 NVSS
PGC 77805 07 37 37.61 -32 44 49.92 5.73 PGC2003
CGMW 2-1039 07 37 37.61 -32 44 50.28 5.73 CGMW
2 NVSS J073744-323514 07 37 44.81 -32 35 13.92 6.12 NVSS
MGPS J073744-323511 07 37 44.71 -32 35 12.12 6.14 MGPS2
3 NVSS J073756-323837 07 37 56.11 -32 38 36.96 6.63 NVSS
4 CGMW 2-1029 07 36 59.50 -32 46 53.76 8.95 CGMW
5 NVSS J073712-323106 07 37 12.50 -32 31 05.88 9.04 NVSS
PGC 77775 07 36 59.21 -32 47 03.84 9.13 PGC2003
MGPS J073712-323059 07 37 12.10 -32 30 59.04 9.18 MGPS2
6 NVSS J073709-324909 07 37 09.19 -32 49 09.84 9.99 NVSS
7 PGC 77774 07 36 58.90 -32 31 00.12 10.34 PGC2003
CGMW 2-1028 07 36 58.90 -32 30 59.76 10.34 CGMW
8 NVSS J073736-322921 07 37 36.41 -32 29 21.84 10.65 NVSS
9 CGMW 2-1031 07 37 13.44 -32 50 24.72 10.95 CGMW
PGC 77787 07 37 13.01 -32 50 29.04 11.04 PGC2003
10 WDS J07383-3238 07 38 18.00 -32 37 59.88 11.27 WDS
11 NVSS J073820-323611 07 38 20.21 -32 36 11.88 12.14 NVSS
12 NVSS J073642-322752 07 36 42.19 -32 27 51.84 14.93 NVSS
MGPS J073641-322751 07 36 42.00 -32 27 51.12 14.97 MGPS2

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