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 4.887 4.286
2 06 22 23.16 +25 14 12.95 6.93 (3.3 ± 1.0) x 10-3 13 3.178 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 2.689 2.574
2 06 21 57.18 +25 02 58.17 6.78 (1.4 ± 0.7) x 10-3 13 2.341 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 B2.2 0618+25 06 21 55.10 +25 08 18.96 5.61 DIXON
VLSSr J062156.4+251053 06 21 56.40 +25 10 54.12 6.38 VLSSR
TGSSADR J062156.6+251055 06 21 56.59 +25 10 54.84 6.43 GMRTAS150M
2 NVSS J062156+251055 06 21 56.81 +25 10 55.92 6.47 NVSS
CGPS J062156+251056 06 21 56.81 +25 10 57.00 6.48 CGPSNGPCAT
TXS 0618+252 06 21 57.10 +25 10 54.84 6.52 TEXAS
3 NVSS J062120+251502 06 21 20.21 +25 15 02.88 6.93 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
4 NVSS J062156+250314 06 21 56.69 +25 03 14.04 7.97 NVSS
CGPS J062117+251600 06 21 17.90 +25 16 00.84 8.02 CGPSNGPCAT
[SPT2015] VLA J0620+2511 06 20 56.81 +25 11 12.12 8.05 FER2FUSRID
CGPS J062056+251111 06 20 56.69 +25 11 12.12 8.07 CGPSNGPCAT
5 NVSS J062056+251111 06 20 56.69 +25 11 12.12 8.08 NVSS
TGSSADR J062056.6+251111 06 20 56.59 +25 11 12.12 8.09 GMRTAS150M
6 NVSS J062117+251605 06 21 17.50 +25 16 05.16 8.12 NVSS
TGSSADR J062117.3+251604 06 21 17.30 +25 16 05.16 8.13 GMRTAS150M
VLSSr J062056.4+251122 06 20 56.50 +25 11 22.92 8.18 VLSSR
7 GB6 J0621+2501 06 21 48.50 +25 01 06.96 8.45 GB6
TGSSADR J062152.0+250132 06 21 52.10 +25 01 32.16 8.53 GMRTAS150M
8 NVSS J062139+251651 06 21 39.89 +25 16 50.88 8.63 NVSS
CGPS J062153+250125 06 21 53.40 +25 01 24.96 8.80 CGPSNGPCAT
9 NVSS J062153+250123 06 21 53.30 +25 01 23.16 8.81 NVSS
TGSSADR J062154.5+250106 06 21 54.60 +25 01 06.96 9.20 GMRTAS150M
10 NVSS J062047+250811 06 20 47.90 +25 08 12.12 9.60 NVSS
CGPS J062047+250809 06 20 47.81 +25 08 08.88 9.62 CGPSNGPCAT
11 PSR J0621+25 06 21 00.00 +25 00 00.00 10.92 ATNFPULSAR
12 NVSS J062213+251621 06 22 13.90 +25 16 21.00 12.60 NVSS

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