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 J1256.1-5922

Field

Detected Excesses

Swift-XRT image of the field for 1FGL J1256.1-5922 Swift-XRT detections in the field for 1FGL J1256.1-5922

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 12 56 05.31 -59 19 42.55 4.90 (5.1 ± 1.2) x 10-3 33 4.211 4.304
2 12 55 28.68 -59 16 31.81 5.24 (4.2 ± 1.0) x 10-3 28 3.774 4.152
3 12 54 40.36 -59 09 06.22 4.66 (3.0 ± 1.0) x 10-3 29 3.945 3.034

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 12 54 44.20 -59 21 21.04 5.05 (2.5 ± 0.9) x 10-3 23 3.390 2.908
2 12 57 09.55 -59 19 07.96 5.70 (1.9 ± 0.8) x 10-3 15 2.447 2.558
3 12 54 58.79 -59 24 23.97 5.89 (2.0 ± 0.8) x 10-3 14 2.440 2.539
4 12 57 29.39 -59 17 19.95 5.59 (1.9 ± 0.7) x 10-3 15 3.164 2.519
5 12 54 38.26 -59 09 04.94 4.67 (1.8 ± 0.9) x 10-3 27 3.025 2.066
6 12 54 41.62 -59 08 33.67 4.63 (1.8 ± 1.0) x 10-3 15 3.025 1.730

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 1FGL J1256.1-5922 Swift-XRT image with known radio, optical and UV sources for 1FGL J1256.1-5922

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2XMM J125652.6-592323 12 56 52.61 -59 23 22.92 5.26 XMM-NEWTON
2 2XMM J125722.5-592312 12 57 22.56 -59 23 12.84 9.04 XMM-NEWTON
3 2XMM J125729.5-592459 12 57 29.59 -59 24 59.40 10.18 XMM-NEWTON
4 2XMM J125730.6-593004 12 57 30.67 -59 30 04.68 12.48 XMM-NEWTON
5 2XMM J125659.6-593400 12 56 59.66 -59 34 00.84 12.88 XMM-NEWTON
6 2XMM J125723.3-593223 12 57 23.38 -59 32 23.28 13.32 XMM-NEWTON
7 2XMM J125731.6-593205 12 57 31.61 -59 32 05.64 13.85 XMM-NEWTON
8 2XMM J125734.8-593248 12 57 34.87 -59 32 48.48 14.64 XMM-NEWTON
9 2XMM J125741.8-593252 12 57 41.83 -59 32 52.80 15.34 XMM-NEWTON

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 PMN J1256-5919 12 56 06.00 -59 19 50.16 2.93 PMN
AT20G J125604-591943 12 56 04.90 -59 19 42.96 3.07 AT20G
MGPS J125604-591943 12 56 04.70 -59 19 42.96 3.08 MGPS2
2 MGPS J125534-592216 12 55 34.20 -59 22 17.04 4.79 MGPS2
3 MGPS J125600-591545 12 56 00.00 -59 15 45.00 7.07 MGPS2
4 CD-58 4811 12 56 32.06 -59 29 39.12 7.45 ACRS
SAO 240391 12 56 31.97 -59 29 39.48 7.45 SAO
HIP 63166 12 56 32.16 -59 29 38.76 7.45 HIPPARCOS
PPM 341437 12 56 32.11 -59 29 39.12 7.45 PPM
HD 112308 12 56 32.14 -59 29 39.12 7.45 HIC
5 MGPS J125511-592447 12 55 12.00 -59 24 47.16 7.89 MGPS2
6 MGPS J125558-591440 12 55 58.30 -59 14 39.84 8.18 MGPS2
7 MGPS J125659-591423 12 56 59.50 -59 14 22.92 10.28 MGPS2
8 MGPS J125437-591952 12 54 37.80 -59 19 53.04 12.29 MGPS2
9 MGPS J125644-593428 12 56 44.11 -59 34 27.84 12.50 MGPS2
10 MGPS J125718-593243 12 57 18.00 -59 32 43.08 13.11 MGPS2
11 PMN J1257-5933 12 57 21.60 -59 33 28.08 13.98 PMN

Penn State University Goddard Space Flight Center Swift