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.

4FGL J1827.2+4303

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1827.2+4303 Swift-XRT detections in the field for 4FGL J1827.2+4303

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 18 27 02.33 +43 08 48.56 5.59 (5.0 ± 1.3) x 10-3 20 3.740 3.813
2 18 26 36.48 +43 03 48.07 6.41 (3.9 ± 1.2) x 10-3 15 3.184 3.255

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 18 26 18.19 +43 04 39.41 5.76 (1.7 ± 0.8) x 10-3 11 2.734 2.062

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1827.2+4303 Swift-XRT image with known radio, optical and UV sources for 4FGL J1827.2+4303

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2RXS J182636.6+430410 18 26 36.67 +43 04 10.56 7.03 ROSAT
2RXS J182636.6+430410 18 26 36.67 +43 04 10.56 7.03 ROSAT
2 1RXS J182632.0+430305 18 26 31.99 +43 03 05.40 7.92 ROSAT
3 2RXS J182647.5+431051 18 26 47.54 +43 10 51.24 8.59 ROSAT
2RXS J182647.5+431051 18 26 47.54 +43 10 51.24 8.59 ROSAT
1RXS J182647.5+431103 18 26 47.50 +43 11 03.12 8.76 ROSAT
4 1RXS J182802.4+425730 18 28 02.40 +42 57 29.88 10.75 ROSAT
2RXS J182802.3+425728 18 28 02.40 +42 57 29.16 10.76 ROSAT
2RXS J182802.3+425728 18 28 02.40 +42 57 29.16 10.76 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J182651+430059 18 26 51.70 +43 01 00.12 5.16 NVSS
2 NVSS J182741+430741 18 27 41.50 +43 07 41.88 6.14 NVSS
TGSSADR J182741.6+430739 18 27 41.71 +43 07 39.00 6.14 GMRTAS150M
WN 1826.1+4305 18 27 41.40 +43 07 45.12 6.17 WENSS
WN 1825.1+4304 18 26 40.90 +43 06 42.84 6.86 WENSS
3 NVSS J182640+430639 18 26 40.51 +43 06 38.88 6.91 NVSS
TGSSADR J182640.4+430639 18 26 40.51 +43 06 39.96 6.91 GMRTAS150M
4 TGSSADR J182647.8+425759 18 26 47.81 +42 58 00.12 7.72 GMRTAS150M
5 NVSS J182740+425723 18 27 40.61 +42 57 24.12 7.99 NVSS
6 NVSS J182701+425601 18 27 01.20 +42 56 00.96 8.27 NVSS
7 NVSS J182708+425502 18 27 08.30 +42 55 01.92 8.94 NVSS
8 PGC 2215335 18 26 58.10 +43 12 16.92 8.95 PGC2003
QORG J182708.4+425500 18 27 08.40 +42 55 00.12 8.97 QORGCAT
9 NVSS J182629+431111 18 26 29.11 +43 11 12.12 11.13 NVSS
VLSSr J182812.1+430817 18 28 12.10 +43 08 17.16 11.30 VLSSR
TGSSADR J182812.2+430819 18 28 12.19 +43 08 18.96 11.32 GMRTAS150M
10 NVSS J182812+430819 18 28 12.31 +43 08 18.96 11.34 NVSS
WN 1826.6+4306 18 28 12.19 +43 08 21.84 11.34 WENSS
GB6 J1828+4308 18 28 12.60 +43 08 15.00 11.36 GB6
TXS 1826+431 18 28 12.41 +43 08 21.12 11.37 TEXAS
11 PGC 2207874 18 27 00.00 +42 52 12.00 12.01 PGC2003
TGSSADR J182616.5+430923 18 26 16.51 +43 09 23.04 12.02 GMRTAS150M
12 NVSS J182616+430923 18 26 16.39 +43 09 23.04 12.05 NVSS
WN 1824.7+4307 18 26 16.30 +43 09 24.84 12.08 WENSS
13 BD+42 3081 18 26 50.74 +42 52 36.48 12.13 ACRS
PPM 57139 18 26 50.71 +42 52 35.04 12.15 PPM
14 NVSS J182818+425931 18 28 18.79 +42 59 30.84 12.42 NVSS
15 PGC 2215132 18 26 18.41 +43 11 47.04 13.02 PGC2003
16 TGSSADR J182609.6+425735 18 26 09.70 +42 57 36.00 13.52 GMRTAS150M

Penn State University Goddard Space Flight Center Swift