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 J1958.1+2436

Field

Detected Excesses

Swift-XRT image of the field for 3FGL J1958.1+2436 Swift-XRT detections in the field for 3FGL J1958.1+2436

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 19 58 00.28 +24 38 03.85 4.44 (2.8 ± 0.4) x 10-2 74 7.881 7.716

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 19 58 30.67 +24 33 47.46 8.62 (2.0 ± 0.9) x 10-3 7 2.194 2.232
2 19 57 51.74 +24 29 47.09 7.71 (2.3 ± 1.1) x 10-3 6 2.178 2.107

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 3FGL J1958.1+2436 Swift-XRT image with known radio, optical and UV sources for 3FGL J1958.1+2436


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 GB6 J1958+2437 19 58 02.59 +24 37 27.12 1.01 GB6
1955+2429 19 58 01.70 +24 37 18.84 1.13 NORTH6CM
2 NVSS J195800+243802 19 58 00.41 +24 38 03.12 1.77 NVSS
CGPS J195800+243806 19 58 00.60 +24 38 06.00 1.78 CGPSNGPCAT
3 NVSS J195801+243504 19 58 01.49 +24 35 04.92 2.08 NVSS
TGSSADR J195801.4+243505 19 58 01.39 +24 35 04.92 2.08 GMRTAS150M
CGPS J195801+243502 19 58 01.61 +24 35 03.12 2.10 CGPSNGPCAT
4 NVSS J195800+244007 19 58 00.79 +24 40 08.04 3.49 NVSS
CGPS J195746+243350 19 57 46.20 +24 33 50.04 5.46 CGPSNGPCAT
5 NVSS J195746+243345 19 57 46.10 +24 33 46.08 5.52 NVSS
6 NVSS J195748+244526 19 57 48.10 +24 45 25.92 9.50 NVSS
CGPS J195747+244528 19 57 47.59 +24 45 29.16 9.59 CGPSNGPCAT
7 NVSS J195855+243810 19 58 55.80 +24 38 09.96 11.34 NVSS
TGSSADR J195856.2+243807 19 58 56.21 +24 38 08.16 11.44 GMRTAS150M
TGSSADR J195757.0+242527 19 57 57.10 +24 25 27.12 11.60 GMRTAS150M
8 NVSS J195756+242526 19 57 57.00 +24 25 27.12 11.61 NVSS
VLSSr J195756.9+242502 19 57 57.00 +24 25 03.00 12.00 VLSSR
9 CGPS J195757+242456 19 57 57.41 +24 24 56.16 12.10 CGPSNGPCAT
TGSSADR J195857.2+244042 19 58 57.31 +24 40 42.96 12.23 GMRTAS150M
10 NVSS J195857+244043 19 58 57.41 +24 40 42.96 12.25 NVSS
TGSSADR J195857.1+242649 19 58 57.19 +24 26 49.92 15.33 GMRTAS150M
11 NVSS J195857+242648 19 58 57.31 +24 26 48.84 15.37 NVSS

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