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 J0754.9-3953

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J0754.9-3953 Swift-XRT detections in the field for 4FGL J0754.9-3953

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 07 54 50.44 -39 50 33.46 5.53 (3.2 ± 0.8) x 10-3 26 3.815 3.867
2 07 55 31.32 -39 52 10.47 5.59 (2.4 ± 0.7) x 10-3 21 3.648 3.505

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 54 42.71 -39 55 07.80 6.12 (2.1 ± 0.7) x 10-3 16 2.999 2.910
2 07 54 36.19 -39 50 07.61 6.78 (1.9 ± 0.7) x 10-3 12 2.773 2.872
3 07 55 05.44 -40 05 19.65 5.82 (1.7 ± 0.7) x 10-3 13 3.084 2.565
4 07 55 53.33 -39 49 55.82 6.41 (1.3 ± 0.5) x 10-3 11 2.395 2.433

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J0754.9-3953 Swift-XRT image with known radio, optical and UV sources for 4FGL J0754.9-3953

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2RXS J075437.5-395103 07 54 37.51 -39 51 03.24 4.71 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
QORG J075452.6-395318 07 54 52.61 -39 53 17.88 1.08 QORGCAT
1 NVSS J075452-395317 07 54 52.61 -39 53 17.88 1.09 NVSS
MGPS J075452-395316 07 54 52.30 -39 53 17.16 1.14 MGPS2
TGSSADR J075452.2-395316 07 54 52.20 -39 53 17.16 1.15 GMRTAS150M
MGPS J075458-395639 07 54 58.61 -39 56 39.12 2.95 MGPS2
2 NVSS J075458-395641 07 54 58.80 -39 56 40.92 2.99 NVSS
MGPS J075518-395704 07 55 18.60 -39 57 03.96 5.21 MGPS2
3 NVSS J075519-395704 07 55 19.01 -39 57 03.96 5.28 NVSS
4 PPM 740574 07 55 14.06 -39 58 15.96 5.52 PPM
5 CD-39 3764 07 54 48.94 -39 59 47.40 6.32 ACRS
SAO 198586 07 54 48.96 -39 59 47.76 6.32 SAO
PPM 284570 07 54 48.89 -39 59 47.76 6.33 PPM
6 PPM 740561 07 54 33.67 -39 58 52.68 6.94 PPM
7 NVSS J075540-395557 07 55 40.20 -39 55 57.00 8.44 NVSS
8 SAO 198593 07 55 11.74 -39 44 09.96 9.91 SAO
CD-39 3775 07 55 11.59 -39 44 09.24 9.91 ACRS
PPM 284579 07 55 11.59 -39 44 09.24 9.91 PPM
9 WDS J07541-3952 07 54 06.00 -39 52 00.12 10.09 WDS
10 NVSS J075534-394349 07 55 34.70 -39 43 50.16 12.16 NVSS
MGPS J075534-394341 07 55 34.30 -39 43 41.16 12.22 MGPS2
11 ESO 075213-3941.5 07 53 57.84 -39 49 30.00 12.25 ESOUPPSALA
PGC 78886 07 53 57.79 -39 49 31.08 12.26 PGC2003
12 QORG J075533.9-394307 07 55 33.91 -39 43 06.96 12.66 QORGCAT
13 NVSS J075533-394225 07 55 33.91 -39 42 25.92 13.24 NVSS

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