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 J0731.9-1517

Field

Detected Excesses

Swift-XRT image of the field for 1FGL J0731.9-1517 Swift-XRT detections in the field for 1FGL J0731.9-1517

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 07 32 18.89 -15 12 58.07 5.89 (3.2 ± 1.0) x 10-3 18 3.537 3.241
2 07 31 31.80 -15 13 04.13 6.52 (2.8 ± 0.9) x 10-3 12 3.103 3.009

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 1FGL J0731.9-1517 Swift-XRT image with known radio, optical and UV sources for 1FGL J0731.9-1517


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 CGMW 1-1112 07 31 52.92 -15 17 56.40 0.96 CGMW
PGC 77553 07 31 52.90 -15 17 57.12 0.97 PGC2003
2 NVSS J073159-151442 07 31 59.11 -15 14 43.08 2.68 NVSS
3 WDS J07320-1514 07 32 00.00 -15 13 59.88 3.43 WDS
QORG J073134.4-151929 07 31 34.39 -15 19 28.92 5.61 QORGCAT
4 NVSS J073134-151931 07 31 34.30 -15 19 32.16 5.64 NVSS
5 PPM 714180 07 31 39.91 -15 22 11.64 6.24 PPM
6 PPM 714190 07 31 57.12 -15 24 11.88 6.93 PPM
7 NVSS J073218-151256 07 32 18.79 -15 12 56.16 7.04 NVSS
8 SAO 152999 07 31 18.14 -15 17 53.88 9.10 SAO
BD-15 1875 07 31 18.05 -15 17 54.96 9.13 ACRS
PPM 218779 07 31 18.02 -15 17 54.96 9.13 PPM
9 PPM 714169 07 31 15.72 -15 12 40.32 10.71 PPM
NN 07 31 15.70 -15 12 40.32 10.72 ACRS
10 SAO 152995 07 31 10.97 -15 18 28.80 10.88 SAO
PPM 218774 07 31 10.94 -15 18 29.16 10.88 PPM
11 -151889 07 32 39.72 -15 19 53.76 10.91 WACKERLING
12 NVSS J073235-150957 07 32 35.71 -15 09 57.96 12.10 NVSS
13 PGC 911187 07 31 17.40 -15 26 35.16 13.13 PGC2003
PMN J0731-1524 07 31 10.70 -15 24 59.04 13.33 PMN
14 BD-15 1888 07 32 30.82 -15 27 36.36 13.34 ACRS
PPM 218813 07 32 30.82 -15 27 36.36 13.34 PPM
SAO 153033 07 32 30.79 -15 27 37.08 13.35 SAO
15 NVSS J073107-152342 07 31 07.20 -15 23 42.00 13.35 NVSS
16 NVSS J073128-150534 07 31 28.30 -15 05 34.08 13.45 NVSS
17 NVSS J073110-152518 07 31 10.70 -15 25 18.84 13.53 NVSS
FSR 1234 07 31 10.01 -15 25 45.84 13.93 OPENCLUST
18 PPM 714201 07 32 45.38 -15 07 54.84 15.19 PPM

Penn State University Goddard Space Flight Center Swift