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.

2FGL J2104.9+3555

Field

Detected Excesses
Swift-XRT image of the field for 2FGL J2104.9+3555 Swift-XRT detections in the field for 2FGL J2104.9+3555

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 21 04 28.98 +35 50 03.85 5.20 (2.6 ± 0.7) x 10-3 20 3.528 3.589

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 21 04 46.45 +35 49 05.04 5.17 (1.9 ± 0.7) x 10-3 23 2.894 2.900

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 2FGL J2104.9+3555 Swift-XRT image with known radio, optical and UV sources for 2FGL J2104.9+3555


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 [SPT2015] VLA J2104+3557 21 04 57.41 +35 57 16.92 1.50 FER2FUSRID
TGSSADR J210513.5+355128 21 05 13.61 +35 51 29.16 5.40 GMRTAS150M
[SPT2015] VLA J2105+3551 21 05 13.70 +35 51 27.00 5.43 FER2FUSRID
2 NVSS J210513+355128 21 05 13.90 +35 51 29.16 5.44 NVSS
WN 2103.2+3539 21 05 13.80 +35 51 25.92 5.46 WENSS
3 NVSS J210453+354848 21 04 53.50 +35 48 48.96 7.02 NVSS
GB6 J2104+3553 21 04 17.71 +35 53 11.04 8.47 GB6
4 NVSS J210417+355244 21 04 17.90 +35 52 45.12 8.58 NVSS
WN 2102.2+3541B 21 04 17.90 +35 52 41.88 8.60 WENSS
TGSSADR J210417.7+355245 21 04 17.81 +35 52 45.12 8.60 GMRTAS150M
5 WN 2102.2+3541 21 04 14.81 +35 52 59.16 9.09 WENSS
VLSSr J210413.5+355302 21 04 13.51 +35 53 02.04 9.33 VLSSR
WN 2102.2+3541A 21 04 12.50 +35 53 12.12 9.46 WENSS
TGSSADR J210412.5+355312 21 04 12.50 +35 53 12.84 9.46 GMRTAS150M
6 NVSS J210412+355313 21 04 12.41 +35 53 12.84 9.48 NVSS
7 NVSS J210404+355832 21 04 04.70 +35 58 32.88 11.04 NVSS
TGSSADR J210428.5+354557 21 04 28.61 +35 45 56.88 11.45 GMRTAS150M
WN 2102.4+3533 21 04 28.70 +35 45 56.16 11.45 WENSS
8 NVSS J210428+354555 21 04 28.61 +35 45 55.08 11.48 NVSS
VLSSr J210427.6+354556 21 04 27.70 +35 45 56.88 11.55 VLSSR

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