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 J1221.4-0635

Field

Detected Excesses
Swift-XRT image of the field for 1FGL J1221.4-0635 Swift-XRT detections in the field for 1FGL J1221.4-0635

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 12 21 27.18 -06 28 47.30 4.03 (8.1 ± 0.9) x 10-3 116 9.443 9.454
2 12 21 26.14 -06 25 07.89 4.04 (4.5 ± 0.8) x 10-3 97 8.125 6.070
3 12 21 53.67 -06 41 02.75 4.95 (2.3 ± 0.5) x 10-3 34 5.136 5.004
4 12 21 53.65 -06 28 52.01 4.60 (2.0 ± 0.5) x 10-3 33 4.174 4.229
5 12 21 06.20 -06 39 14.71 4.86 (1.8 ± 0.4) x 10-3 29 4.084 4.084
6 12 21 53.58 -06 31 19.39 5.08 (1.6 ± 0.4) x 10-3 30 3.708 3.939
7 12 22 03.90 -06 29 12.76 5.11 (1.5 ± 0.4) x 10-3 20 3.452 3.594
8 12 21 20.46 -06 20 23.02 5.14 (1.1 ± 0.3) x 10-3 18 3.366 3.168
9 12 20 50.39 -06 35 03.89 5.00 (1.2 ± 0.4) x 10-3 26 3.024 3.045

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 21 36.10 -06 25 41.79 5.28 (10 ± 3) x 10-4 19 2.638 2.911
2 12 21 45.47 -06 22 27.06 5.53 (1.1 ± 0.4) x 10-3 15 2.965 2.781
3 12 21 19.78 -06 39 23.34 5.89 (9 ± 4) x 10-4 18 2.714 2.573
4 12 21 38.70 -06 22 48.76 5.14 (6 ± 3) x 10-4 14 2.504 2.217

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 1FGL J1221.4-0635 Swift-XRT image with known radio, optical and UV sources for 1FGL J1221.4-0635

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 SWIFT J122105.9-063914 12 21 05.95 -06 39 14.40 6.38 SWIFT
2 SWIFT J122127.2-062842 12 21 27.24 -06 28 42.24 6.50 SWIFT
3 SWIFT J122153.9-063121 12 21 53.93 -06 31 21.00 7.97 SWIFT
4 SWIFT J122153.5-064103 12 21 53.59 -06 41 03.84 9.06 SWIFT
5 SWXCS J122126-0625.2 12 21 26.35 -06 25 09.84 10.03 SWIFT
SWIFT J122126.6-062505 12 21 26.62 -06 25 05.52 10.10 SWIFT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
FIRST J122117.4-063039 12 21 17.50 -06 30 38.88 4.99 FIRST
[PME2013] J1221-0630 12 21 17.50 -06 30 38.16 5.00 AT2FGLUS
[SPT2015] ATCA J1221-0630 12 21 17.50 -06 30 38.16 5.00 FER2FUSRID
1 NVSS J122117-063038 12 21 17.40 -06 30 38.16 5.01 NVSS
FIRST J122139.2-063028 12 21 39.31 -06 30 28.08 5.78 FIRST
[PME2013] J1221-063A 12 21 39.41 -06 30 29.16 5.79 AT2FGLUS
TGSSADR J122139.7-063032 12 21 39.70 -06 30 33.12 5.79 GMRTAS150M
[SPT2015] ATCA J1221-063A 12 21 39.50 -06 30 29.88 5.79 FER2FUSRID
GLEAM J122140-063037 12 21 40.39 -06 30 37.08 5.83 GLEAMEGCAT
2 NVSS J122140-063035 12 21 40.51 -06 30 36.00 5.88 NVSS
3 TGSSADR J122142.8-063057 12 21 42.79 -06 30 56.88 5.99 GMRTAS150M
FIRST J122142.9-063055 12 21 42.89 -06 30 55.08 6.03 FIRST
FIRST J122143.3-063057 12 21 43.30 -06 30 57.96 6.06 FIRST
4 NVSS J122202-063803 12 22 02.40 -06 38 03.84 9.54 NVSS
5 NVSS J122152-064235 12 21 52.20 -06 42 36.00 9.89 NVSS
FIRST J122152.0-064240 12 21 52.10 -06 42 39.96 9.93 FIRST
6 NVSS J122132-062409 12 21 32.59 -06 24 10.08 11.15 NVSS
FIRST J122133.2-062410 12 21 33.31 -06 24 11.16 11.17 FIRST
FIRST J122159.2-062725 12 21 59.30 -06 27 24.84 11.38 FIRST
7 NVSS J122159-062715 12 21 59.40 -06 27 15.84 11.51 NVSS
8 NVSS J122157-062354 12 21 57.19 -06 23 53.88 13.72 NVSS
FIRST J122157.3-062354 12 21 57.41 -06 23 54.96 13.73 FIRST

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