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 27.21 -06 28 47.16 4.04 (8.1 ± 0.9) x 10-3 115 9.395 9.401
2 12 21 26.11 -06 25 08.20 4.05 (4.5 ± 0.8) x 10-3 97 8.131 6.070
3 12 21 53.67 -06 41 02.75 4.95 (2.3 ± 0.5) x 10-3 34 5.138 5.004
4 12 21 53.65 -06 28 52.01 4.60 (2.0 ± 0.5) x 10-3 33 4.179 4.229
5 12 21 53.58 -06 31 19.39 5.08 (1.6 ± 0.4) x 10-3 30 3.709 3.939
6 12 21 06.20 -06 39 14.71 4.86 (1.7 ± 0.4) x 10-3 29 3.933 3.934
7 12 22 03.90 -06 29 12.76 5.11 (1.5 ± 0.4) x 10-3 20 3.453 3.594
8 12 21 20.46 -06 20 23.02 5.14 (1.1 ± 0.3) x 10-3 18 3.368 3.168
9 12 20 50.39 -06 35 03.89 5.02 (1.2 ± 0.4) x 10-3 26 3.028 3.067

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 36.06 -06 25 41.01 5.35 (10 ± 3) x 10-4 18 2.644 2.911
2 12 21 45.47 -06 22 27.06 5.53 (1.1 ± 0.4) x 10-3 15 2.968 2.781
3 12 21 19.78 -06 39 23.34 5.89 (9 ± 4) x 10-4 18 2.722 2.573
4 12 21 38.70 -06 22 48.76 5.14 (6 ± 3) x 10-4 14 2.509 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


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
FIRST J122117.4-063039 12 21 17.50 -06 30 38.88 4.99 FIRST
1 NVSS J122117-063038 12 21 17.40 -06 30 38.16 5.02 NVSS
FIRST J122139.2-063028 12 21 39.31 -06 30 28.08 5.78 FIRST
2 NVSS J122140-063035 12 21 40.51 -06 30 36.00 5.88 NVSS
3 FIRST J122142.9-063055 12 21 42.91 -06 30 55.08 6.03 FIRST
FIRST J122143.3-063057 12 21 43.30 -06 30 57.96 6.06 FIRST
4 PPM 195395 12 21 01.13 -06 31 26.04 7.19 PPM
5 NVSS J122202-063803 12 22 02.40 -06 38 03.84 9.54 NVSS
6 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
7 PGC 104714 12 21 31.61 -06 45 56.88 10.86 PGC2003
QORG J122133.2-062412 12 21 33.19 -06 24 11.88 11.14 QORGCAT
8 NVSS J122132-062409 12 21 32.59 -06 24 10.08 11.16 NVSS
FIRST J122133.2-062410 12 21 33.31 -06 24 11.16 11.17 FIRST
9 675- 4 12 22 03.36 -06 28 55.92 11.23 NLTT
FIRST J122159.2-062725 12 21 59.30 -06 27 24.84 11.38 FIRST
10 NVSS J122159-062715 12 21 59.40 -06 27 15.84 11.51 NVSS
11 PGC 1033402 12 21 20.11 -06 23 26.16 11.84 PGC2003
12 PGC 1028759 12 21 50.81 -06 46 59.88 13.34 PGC2003
13 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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