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 J1221.4-0634

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1221.4-0634 Swift-XRT detections in the field for 4FGL J1221.4-0634

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 12 21 27.17 -06 28 47.44 4.05 (8.0 ± 0.9) x 10-3 115 9.608 9.419
2 12 21 26.09 -06 25 07.44 4.04 (4.6 ± 0.8) x 10-3 100 8.197 6.146
3 12 21 53.66 -06 41 02.85 5.08 (2.3 ± 0.5) x 10-3 33 5.012 5.114
4 12 21 53.61 -06 28 52.78 4.63 (2.0 ± 0.5) x 10-3 33 4.252 4.246
5 12 21 06.23 -06 39 13.45 4.83 (1.8 ± 0.4) x 10-3 29 4.074 4.055
6 12 21 53.59 -06 31 19.50 5.08 (1.6 ± 0.4) x 10-3 30 3.871 3.956
7 12 21 20.55 -06 20 25.73 5.20 (1.3 ± 0.4) x 10-3 19 3.212 3.513
8 12 20 50.40 -06 35 09.36 5.31 (1.2 ± 0.4) x 10-3 21 3.138 3.168
9 12 22 04.01 -06 29 12.17 5.24 (1.2 ± 0.4) x 10-3 18 3.183 3.146

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 45.48 -06 22 26.93 5.53 (1.2 ± 0.4) x 10-3 15 2.941 2.999
2 12 21 36.22 -06 25 43.13 5.35 (10 ± 3) x 10-4 18 2.708 2.926
3 12 21 19.84 -06 39 23.04 5.96 (1.1 ± 0.4) x 10-3 18 2.830 2.888
4 12 22 07.60 -06 30 00.24 5.40 (8 ± 3) x 10-4 15 2.412 2.258

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1221.4-0634 Swift-XRT image with known radio, optical and UV sources for 4FGL J1221.4-0634

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 SWIFT J122127.2-062842 12 21 27.24 -06 28 42.24 6.29 SWIFT
2 SWIFT J122105.9-063914 12 21 05.95 -06 39 14.40 7.10 SWIFT
3 SWIFT J122153.9-063121 12 21 53.93 -06 31 21.00 7.22 SWIFT
4 SWIFT J122153.5-064103 12 21 53.59 -06 41 03.84 8.65 SWIFT
5 SWXCS J122126-0625.2 12 21 26.35 -06 25 09.84 9.84 SWIFT
SWIFT J122126.6-062505 12 21 26.62 -06 25 05.52 9.91 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 5.17 FIRST
[PME2013] J1221-0630 12 21 17.50 -06 30 38.16 5.18 AT2FGLUS
[SPT2015] ATCA J1221-0630 12 21 17.50 -06 30 38.16 5.18 FER2FUSRID
1 NVSS J122117-063038 12 21 17.40 -06 30 38.16 5.20 NVSS
TGSSADR J122139.7-063032 12 21 39.70 -06 30 33.12 5.20 GMRTAS150M
FIRST J122139.2-063028 12 21 39.31 -06 30 28.08 5.21 FIRST
[PME2013] J1221-063A 12 21 39.41 -06 30 29.16 5.21 AT2FGLUS
[SPT2015] ATCA J1221-063A 12 21 39.50 -06 30 29.88 5.21 FER2FUSRID
GLEAM J122140-063037 12 21 40.39 -06 30 37.08 5.23 GLEAMEGCAT
2 NVSS J122140-063035 12 21 40.51 -06 30 36.00 5.27 NVSS
3 TGSSADR J122142.8-063057 12 21 42.79 -06 30 56.88 5.33 GMRTAS150M
FIRST J122142.9-063055 12 21 42.89 -06 30 55.08 5.37 FIRST
FIRST J122143.3-063057 12 21 43.30 -06 30 57.96 5.40 FIRST
4 PPM 195395 12 21 01.13 -06 31 26.04 7.74 PPM
5 NVSS J122202-063803 12 22 02.40 -06 38 03.84 8.90 NVSS
6 NVSS J122152-064235 12 21 52.20 -06 42 36.00 9.57 NVSS
FIRST J122152.0-064240 12 21 52.10 -06 42 39.96 9.61 FIRST
7 675- 4 12 22 03.36 -06 28 55.92 10.50 NLTT
FIRST J122159.2-062725 12 21 59.30 -06 27 24.84 10.70 FIRST
8 NVSS J122159-062715 12 21 59.40 -06 27 15.84 10.83 NVSS
QORG J122133.2-062412 12 21 33.19 -06 24 11.88 10.84 QORGCAT
9 NVSS J122132-062409 12 21 32.59 -06 24 10.08 10.86 NVSS
FIRST J122133.2-062410 12 21 33.31 -06 24 11.16 10.86 FIRST
10 PGC 104714 12 21 31.61 -06 45 56.88 10.99 PGC2003
11 PGC 1033402 12 21 20.11 -06 23 26.16 11.75 PGC2003
12 NVSS J122139-062303 12 21 39.79 -06 23 03.12 12.24 NVSS
QORG J122139.8-062303 12 21 39.79 -06 23 03.12 12.24 QORGCAT
13 NVSS J122157-062354 12 21 57.19 -06 23 53.88 13.13 NVSS
FIRST J122157.3-062354 12 21 57.41 -06 23 54.96 13.15 FIRST
14 PPM 195418 12 22 15.29 -06 25 46.56 14.77 PPM

Penn State University Goddard Space Flight Center Swift