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.

3FGL J0721.5-0221

Field

Detected Excesses

Swift-XRT image of the field for 3FGL J0721.5-0221 Swift-XRT detections in the field for 3FGL J0721.5-0221

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 07 21 13.97 -02 20 54.59 3.78 (7.0 ± 0.4) x 10-2 300 16.840 16.310
2 07 20 51.21 -02 10 32.72 3.87 (4.8 ± 0.4) x 10-2 200 14.490 13.240
3 07 21 18.78 -02 23 10.38 4.11 (1.5 ± 0.2) x 10-2 106 9.225 6.812
4 07 21 18.25 -02 24 05.94 4.10 (1.1 ± 0.2) x 10-2 97 7.932 5.788
5 07 20 55.98 -02 12 50.14 4.35 (4.9 ± 1.3) x 10-3 49 6.115 3.828
6 07 20 55.48 -02 13 53.74 4.57 (4.4 ± 1.2) x 10-3 41 4.839 3.779

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 07 20 55.98 -02 12 50.14 4.35 (2.2 ± 1.1) x 10-3 49 5.330 2.039
2 07 21 13.97 -02 20 54.59 3.78 N/A 300 2.599 N/A

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 3FGL J0721.5-0221 Swift-XRT image with known radio, optical and UV sources for 3FGL J0721.5-0221

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1RXS J072114.5-022047 07 21 14.50 -02 20 47.04 4.00 ROSAT
1RXS J072114.5-022047 07 21 14.50 -02 20 47.04 4.00 ROSAT
1 XMMSL2 J072113.4-022056 07 21 14.04 -02 20 47.04 4.11 XMM-NEWTON
2RXS J072114.0-022045 07 21 14.02 -02 20 45.60 4.13 ROSAT
XMMSL2 J072113.4-022056 07 21 13.99 -02 20 42.36 4.15 XMM-NEWTON
XMMSL2 J072113.4-022056 07 21 13.46 -02 20 56.40 4.22 XMM-NEWTON
2 2RXS J072215.4-021301 07 22 15.46 -02 13 01.56 14.27 ROSAT
2RXS J072050.8-021046 07 20 50.83 -02 10 46.20 14.69 ROSAT
3 XMMSL2 J072051.1-021032 07 20 51.12 -02 10 35.40 14.77 XMM-NEWTON
1RXS J072050.8-021030 07 20 51.17 -02 10 33.60 14.79 ROSAT
XMMSL2 J072051.1-021032 07 20 51.19 -02 10 32.16 14.80 XMM-NEWTON
XMMSL2 J072051.1-021032 07 20 50.93 -02 10 33.24 14.83 XMM-NEWTON
1RXS J072050.8-021030 07 20 50.81 -02 10 30.36 14.88 ROSAT
1RXS J072050.8-021030 07 20 50.81 -02 10 30.00 14.89 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 CGMW 1-758 07 21 22.20 -02 20 55.32 2.12 CGMW
PGC 77081 07 21 22.20 -02 20 48.12 2.17 PGC2003
2 NVSS J072120-022333 07 21 20.50 -02 23 33.00 3.04 NVSS
3 NVSS J072114-022053 07 21 14.11 -02 20 53.16 4.07 NVSS
4 CGMW 1-761 07 21 26.26 -02 17 43.44 4.09 CGMW
PGC 77082 07 21 25.99 -02 17 40.92 4.14 PGC2003
5 BD-02 2072 07 21 26.86 -02 17 07.08 4.65 ACRS
PPM 176869 07 21 26.88 -02 17 06.72 4.65 PPM
6 NVSS J072107-022057 07 21 07.10 -02 20 57.12 5.79 NVSS
TGSSADR J072107.1-022057 07 21 07.10 -02 20 57.84 5.79 GMRTAS150M
7 PPM 176865 07 21 22.82 -02 16 05.52 5.89 PPM
WDS J07214-0216 07 21 24.00 -02 16 00.12 5.90 WDS
BD-02 2071 07 21 22.78 -02 16 05.16 5.90 ACRS
8 HIP 35629 07 21 07.56 -02 23 48.84 6.02 HIPPARCOS
SAO 134550 07 21 07.54 -02 23 48.48 6.02 SAO
BD-02 2066 07 21 07.54 -02 23 48.84 6.02 ACRS
PPM 176860 07 21 07.54 -02 23 49.20 6.02 PPM
HD 57429 07 21 07.54 -02 23 48.84 6.02 HIC
TGSSADR J072115.7-022742 07 21 15.79 -02 27 42.12 6.99 GMRTAS150M
9 NVSS J072115-022744 07 21 15.91 -02 27 45.00 7.01 NVSS
10 BD-02 2065 07 21 06.55 -02 25 32.16 7.02 ACRS
PPM 176859 07 21 06.55 -02 25 32.52 7.03 PPM
11 NVSS J072130-022853 07 21 30.00 -02 28 54.12 7.20 NVSS
12 PPM 176861 07 21 08.45 -02 16 18.12 7.64 PPM
BD-02 2067 07 21 08.45 -02 16 17.76 7.64 ACRS
SAO 134554 07 21 08.52 -02 16 16.32 7.65 SAO
13 NVSS J072150-022810 07 21 50.30 -02 28 09.84 8.20 NVSS
TGSSADR J072150.7-022825 07 21 50.71 -02 28 24.96 8.47 GMRTAS150M
14 CGMW 1-764 07 21 39.36 -02 12 14.40 9.74 CGMW
PGC 77093 07 21 40.01 -02 12 11.16 9.83 PGC2003
15 NVSS J072052-022615 07 20 52.51 -02 26 16.08 10.45 NVSS
TGSSADR J072052.4-022619 07 20 52.39 -02 26 18.96 10.48 GMRTAS150M
16 PPM 703510 07 21 15.91 -02 31 44.04 10.65 PPM
17 PGC 77075 07 21 16.10 -02 32 44.88 11.59 PGC2003
18 NVSS J072112-021100 07 21 12.10 -02 10 59.88 11.60 NVSS
CGMW 1-755 07 21 15.98 -02 32 48.84 11.66 CGMW
TGSSADR J072053.8-021109 07 20 53.90 -02 11 09.96 13.89 GMRTAS150M
VLSSr J072053.5-021109 07 20 53.50 -02 11 09.96 13.94 VLSSR
19 NVSS J072053-021103 07 20 53.21 -02 11 03.12 14.08 NVSS
20 NVSS J072209-023152 07 22 09.60 -02 31 51.96 14.17 NVSS
21 NVSS J072206-023240 07 22 06.41 -02 32 39.84 14.24 NVSS
PMN J0720-0210 07 20 51.60 -02 10 50.16 14.51 PMN
22 AT20G J072051-021034 07 20 51.19 -02 10 33.96 14.77 AT20G
23 NVSS J072213-023206 07 22 13.30 -02 32 07.08 15.00 NVSS
24 0718-0204 07 20 52.20 -02 10 01.92 15.03 NORTH20CM
25 NVSS J072049-021008 07 20 49.10 -02 10 09.12 15.44 NVSS
26 NVSS J072042-023157 07 20 42.10 -02 31 58.08 15.78 NVSS

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