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 J0621.5+2508

Field

Detected Excesses

Swift-XRT image of the field for 1FGL J0621.5+2508 Swift-XRT detections in the field for 1FGL J0621.5+2508

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 06 20 54.50 +25 11 52.13 5.24 (5.1 ± 1.2) x 10-3 27 4.888 4.286
2 06 22 23.16 +25 14 12.95 6.93 (3.3 ± 1.0) x 10-3 13 3.182 3.445

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 06 21 51.51 +24 59 30.76 6.65 (2.0 ± 0.8) x 10-3 10 2.691 2.574
2 06 21 57.18 +25 02 58.17 6.78 (1.4 ± 0.7) x 10-3 13 2.344 2.088

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 1FGL J0621.5+2508 Swift-XRT image with known radio, optical and UV sources for 1FGL J0621.5+2508


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
1 PGC 1726193 06 21 34.51 +25 07 28.92 1.39 PGC2003
2 B2.2 0618+25 06 21 55.10 +25 08 18.96 5.61 DIXON
VLSS J0621.9+2510 06 21 56.30 +25 10 54.12 6.36 VLSS
3 NVSS J062156+251055 06 21 56.81 +25 10 55.92 6.47 NVSS
PGC 1727890 06 21 57.31 +25 10 46.92 6.52 PGC2003
TXS 0618+252 06 21 57.10 +25 10 54.84 6.52 TEXAS
PGC 1730017 06 21 20.40 +25 14 42.00 6.60 PGC2003
4 NVSS J062120+251502 06 21 20.21 +25 15 02.88 6.94 NVSS
0617+2512 06 20 58.01 +25 11 06.00 7.76 NORTH6CM
GB6 J0620+2511 06 20 57.31 +25 11 06.00 7.91 GB6
5 NVSS J062156+250314 06 21 56.71 +25 03 14.04 7.97 NVSS
6 NVSS J062056+251111 06 20 56.71 +25 11 12.12 8.08 NVSS
7 NVSS J062117+251605 06 21 17.50 +25 16 05.16 8.12 NVSS
VLSS J0620.9+2511 06 20 56.21 +25 11 18.96 8.23 VLSS
8 HIP 30234 06 21 38.98 +25 00 25.56 8.31 HIPPARCOS
PPM 95835 06 21 38.95 +25 00 25.20 8.31 PPM
BD+25 1232 06 21 38.98 +25 00 25.20 8.31 ACRS
HD 44211 06 21 38.93 +25 00 24.84 8.32 HIC
SAO 78268 06 21 39.07 +25 00 24.48 8.33 SAO
9 GB6 J0621+2501 06 21 48.50 +25 01 06.96 8.45 GB6
10 PGC 1727876 06 22 06.79 +25 10 45.84 8.56 PGC2003
11 WDS J06216+2500 06 21 36.00 +25 00 00.00 8.59 WDS
12 NVSS J062139+251651 06 21 39.91 +25 16 50.88 8.63 NVSS
13 NVSS J062153+250123 06 21 53.30 +25 01 23.16 8.81 NVSS
14 NVSS J062047+250811 06 20 47.90 +25 08 12.12 9.60 NVSS
15 PGC 1723538 06 20 57.91 +25 02 12.12 9.67 PGC2003
16 WDS J06219+2459 06 21 54.00 +24 58 59.88 10.91 WDS
17 WDS J06209+2501 06 20 54.00 +25 01 00.12 11.13 WDS
18 HD 255819 06 22 18.05 +25 04 58.44 11.37 HIC
BD+25 1237 06 22 18.07 +25 04 58.44 11.37 ACRS
PPM 95851 06 22 18.07 +25 04 58.80 11.37 PPM
HIP 30289 06 22 18.07 +25 04 58.44 11.37 HIPPARCOS
SAO 78280 06 22 18.22 +25 04 58.44 11.40 SAO
19 NVSS J062213+251621 06 22 13.90 +25 16 21.00 12.60 NVSS
20 NSV 2937 06 22 21.79 +25 13 28.92 12.67 GCVSNSVARS
21 WDS J06208+2459 06 20 48.00 +24 58 59.88 13.49 WDS

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