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 13.96 -32 36 30.66 4.59 (4.4 ± 0.8) x 10-3 54 5.473 5.372
2 07 37 38.85 -32 32 58.46 4.83 (3.3 ± 0.7) x 10-3 36 4.897 4.774
3 07 37 14.40 -32 23 41.47 5.64 (1.5 ± 0.5) x 10-3 14 3.006 3.185

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 53.81 -32 38 23.33 5.76 (1.2 ± 0.5) x 10-3 21 2.487 2.654
2 07 37 35.01 -32 38 11.50 5.28 (1.2 ± 0.5) x 10-3 28 2.573 2.533
3 07 37 53.34 -32 36 35.36 5.44 (1.1 ± 0.4) x 10-3 22 2.846 2.519
4 07 37 37.96 -32 42 09.57 5.44 (1.0 ± 0.4) x 10-3 22 2.528 2.405
5 07 37 43.99 -32 37 41.18 5.40 (1.1 ± 0.5) x 10-3 26 2.424 2.288
6 07 37 39.94 -32 41 18.90 5.31 (10 ± 4) x 10-4 24 2.428 2.254

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
1 NVSS J073736-324431 07 37 36.19 -32 44 30.84 5.31 NVSS
TGSSADR J073744.6-323514 07 37 44.59 -32 35 15.00 6.10 GMRTAS150M
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 6.13 MGPS2
3 NVSS J073756-323837 07 37 56.11 -32 38 36.96 6.63 NVSS
[PME2013] J0737-3231 07 37 12.70 -32 31 05.88 9.04 AT2FGLUS
4 NVSS J073712-323106 07 37 12.50 -32 31 05.88 9.04 NVSS
[SPT2015] ATCA J0737-3231 07 37 12.70 -32 31 05.16 9.04 FER2FUSRID
TGSSADR J073712.5-323103 07 37 12.50 -32 31 03.00 9.08 GMRTAS150M
MGPS J073712-323059 07 37 12.10 -32 30 59.04 9.18 MGPS2
5 NVSS J073709-324909 07 37 09.19 -32 49 09.84 9.99 NVSS
TGSSADR J073709.0-324913 07 37 09.10 -32 49 14.16 10.07 GMRTAS150M
6 NVSS J073736-322921 07 37 36.41 -32 29 21.84 10.65 NVSS
7 NVSS J073820-323611 07 38 20.21 -32 36 11.88 12.14 NVSS
8 NVSS J073642-322752 07 36 42.19 -32 27 51.84 14.92 NVSS
TGSSADR J073642.1-322750 07 36 42.19 -32 27 51.12 14.94 GMRTAS150M
MGPS J073641-322751 07 36 42.00 -32 27 51.12 14.97 MGPS2
9 TGSSADR J073810.4-322809 07 38 10.39 -32 28 09.12 15.02 GMRTAS150M

Penn State University Goddard Space Flight Center Swift