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 J0246.0-4838

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J0246.0-4838 Swift-XRT detections in the field for 4FGL J0246.0-4838

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 02 44 56.87 -48 40 11.55 4.80 (8 ± 2) x 10-3 39 4.961 4.722

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 02 45 59.10 -48 29 01.33 6.41 (3.0 ± 1.1) x 10-3 11 2.843 2.894
2 02 46 22.97 -48 31 05.71 5.31 (3.0 ± 1.1) x 10-3 22 3.053 2.817
3 02 45 10.99 -48 43 34.27 6.31 (2.5 ± 0.9) x 10-3 14 2.568 2.746
4 02 45 14.20 -48 34 38.51 6.04 (2.6 ± 1.0) x 10-3 14 2.728 2.606
5 02 44 40.34 -48 37 49.76 5.96 (2.2 ± 1.0) x 10-3 11 2.520 2.235

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J0246.0-4838 Swift-XRT image with known radio, optical and UV sources for 4FGL J0246.0-4838

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2RXS J024642.9-483948 02 46 42.96 -48 39 48.60 6.33 ROSAT
2RXS J024642.9-483948 02 46 42.96 -48 39 48.60 6.33 ROSAT
2 1RXS J024700.4-483404 02 47 00.41 -48 34 04.44 10.12 ROSAT
2RXS J024700.7-483358 02 47 00.74 -48 33 58.68 10.22 ROSAT
2RXS J024700.7-483358 02 47 00.74 -48 33 58.68 10.22 ROSAT
3 4XMMs J024459.1-483600 02 44 59.11 -48 36 00.72 11.24 XMM-NEWTON
4XMM J024459.0-483559 02 44 59.04 -48 35 59.64 11.26 XMM-NEWTON

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 PGC 485407 02 46 28.10 -48 38 08.16 3.77 PGC2003
2 PPM 307046 02 45 47.42 -48 43 13.80 5.56 PPM
3 PGC 484347 02 46 18.70 -48 43 59.16 5.88 PGC2003
4 PGC 486314 02 46 13.01 -48 32 38.04 6.03 PGC2003
5 PGC 485099 02 46 54.19 -48 39 51.84 8.17 PGC2003
6 PGC 484953 02 46 53.71 -48 40 40.08 8.25 PGC2003
7 PGC 484088 02 46 33.91 -48 45 20.16 8.27 PGC2003
8 PGC 483585 02 46 12.91 -48 47 57.84 9.52 PGC2003
9 NSV 15571 02 44 56.59 -48 40 10.92 11.49 GCVSNSVARS
PPM 307026 02 44 56.59 -48 40 11.28 11.49 PPM
HD 17302 02 44 56.59 -48 40 11.28 11.49 HIC
HIP 12829 02 44 56.59 -48 40 10.92 11.49 HIPPARCOS
CD-49 754 02 44 56.59 -48 40 11.64 11.49 ACRS
SAO 216030 02 44 56.47 -48 40 10.92 11.51 SAO
10 PGC 486887 02 47 11.30 -48 29 26.88 14.19 PGC2003
11 PGC 487017 02 47 17.71 -48 28 41.16 15.49 PGC2003

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