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 J1254.7-4516

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1254.7-4516 Swift-XRT detections in the field for 4FGL J1254.7-4516

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 12 54 59.12 -45 19 52.70 5.70 (3.4 ± 1.0) x 10-3 20 3.869 3.344

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1254.7-4516 Swift-XRT image with known radio, optical and UV sources for 4FGL J1254.7-4516


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 PPM 317913 12 54 31.90 -45 16 14.16 1.91 PPM
CD-44 8314 12 54 31.87 -45 16 14.16 1.92 ACRS
SAO 223746 12 54 31.85 -45 16 13.08 1.92 SAO
2 PPM 759296 12 55 08.86 -45 11 09.24 7.05 PPM
3 WDS J12547-4508 AB 12 54 42.00 -45 07 59.88 8.49 WDS
WDS J12547-4508 AB,C 12 54 42.00 -45 07 59.88 8.49 WDS
4 PGC 44041 12 55 30.41 -45 14 08.16 8.73 PGC2003
A1252-4457 12 55 30.43 -45 14 08.88 8.73 ZCAT
ESO 125240-4457.9 12 55 30.48 -45 14 09.60 8.73 ESOUPPSALA
Unknown 12 55 30.50 -45 14 08.16 8.74 RC3
ESO 125151-4451.4 12 54 40.08 -45 07 40.80 8.82 ESOUPPSALA
5 SAO 223751 12 54 44.69 -45 07 39.36 8.84 SAO
PGC 43937 12 54 40.10 -45 07 39.00 8.85 PGC2003
PPM 317924 12 54 44.71 -45 07 38.28 8.86 PPM
6 CD-44 8308 12 53 58.80 -45 21 45.72 9.34 ACRS
PPM 759288 12 53 58.73 -45 21 45.72 9.35 PPM
7 TGSSADR J125522.8-452409 12 55 22.80 -45 24 10.08 10.43 GMRTAS150M
SUMSS J125523-452408 12 55 22.99 -45 24 09.00 10.44 SUMSS
8 PPM 759284 12 53 42.70 -45 16 48.36 10.55 PPM
9 SUMSS J125545-451743 12 55 45.19 -45 17 43.08 11.07 SUMSS
TGSSADR J125545.3-451746 12 55 45.31 -45 17 45.96 11.10 GMRTAS150M
10 TGSSADR J125335.9-452051 12 53 36.00 -45 20 51.00 12.51 GMRTAS150M
SUMSS J125335-452052 12 53 35.90 -45 20 53.16 12.53 SUMSS
11 SUMSS J125405-450545 12 54 05.81 -45 05 45.96 12.54 SUMSS
TGSSADR J125405.7-450544 12 54 05.71 -45 05 44.16 12.57 GMRTAS150M
12 TGSSADR J125405.9-452718 12 54 05.90 -45 27 19.08 12.60 GMRTAS150M
SUMSS J125405-452720 12 54 05.90 -45 27 20.16 12.62 SUMSS
13 CD-44 8307 12 53 54.36 -45 06 33.48 13.08 ACRS
HD 112021 12 53 54.31 -45 06 33.48 13.08 HIC
PPM 317905 12 53 54.34 -45 06 33.12 13.08 PPM
HIP 62941 12 53 54.36 -45 06 33.12 13.08 HIPPARCOS
SAO 223740 12 53 54.19 -45 06 32.40 13.11 SAO

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