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 J1848.6+3232

Field

Detected Excesses

Swift-XRT image of the field for 3FGL J1848.6+3232 Swift-XRT detections in the field for 3FGL J1848.6+3232

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 18 48 34.40 +32 43 58.79 3.66 (4.5 ± 0.2) x 10-2 507 22.950 20.880
2 18 48 33.96 +32 32 49.62 5.28 (2.4 ± 0.6) x 10-3 36 4.528 4.416
3 18 49 19.69 +32 40 00.12 5.14 (1.9 ± 0.4) x 10-3 27 4.240 4.270
4 18 47 50.85 +32 33 36.65 5.14 (1.8 ± 0.4) x 10-3 28 4.287 4.159
5 18 48 53.60 +32 44 46.90 4.21 (2.3 ± 0.6) x 10-3 55 5.404 3.999
6 18 48 27.45 +32 46 50.14 4.95 (1.9 ± 0.5) x 10-3 24 3.989 3.565
7 18 49 04.95 +32 40 00.62 4.95 (1.4 ± 0.4) x 10-3 27 3.544 3.437
8 18 49 18.35 +32 45 44.86 6.52 (1.0 ± 0.3) x 10-3 13 2.988 3.350
9 18 48 53.62 +32 39 37.49 4.64 (1.3 ± 0.4) x 10-3 31 3.379 3.052

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 47 50.61 +32 42 03.80 5.59 (10 ± 3) x 10-4 18 2.777 2.935
2 18 49 20.67 +32 36 29.38 5.76 (1.1 ± 0.4) x 10-3 13 2.939 2.909
3 18 49 15.36 +32 41 17.65 5.35 (9 ± 3) x 10-4 20 2.897 2.762
4 18 48 21.56 +32 37 28.32 5.02 (1.0 ± 0.4) x 10-3 28 2.641 2.754
5 18 47 55.56 +32 45 19.33 5.31 (8 ± 3) x 10-4 18 2.554 2.463
6 18 48 27.95 +32 44 12.36 4.45 (10 ± 4) x 10-4 23 3.039 2.322
7 18 48 47.77 +32 39 18.49 4.95 (7 ± 3) x 10-4 23 2.548 2.015
8 18 48 53.60 +32 44 46.90 4.21 (8 ± 4) x 10-4 55 3.417 1.895

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 3FGL J1848.6+3232 Swift-XRT image with known radio, optical and UV sources for 3FGL J1848.6+3232

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1RXS J184851.8+323801 18 48 51.79 +32 38 00.96 6.11 ROSAT
2 1RXS J184922.9+323611 18 49 22.90 +32 36 11.16 10.14 ROSAT
3 XMMSL2 J184834.2+324356 18 48 34.10 +32 43 55.56 11.28 XMM-NEWTON
XMMSL2 J184834.2+324356 18 48 34.15 +32 44 01.68 11.39 XMM-NEWTON
XMMSL2 J184834.2+324356 18 48 34.15 +32 44 03.48 11.41 XMM-NEWTON

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 OU+377 18 48 28.20 +32 30 25.92 3.01 DIXON
2 NVSS J184853+323729 18 48 53.71 +32 37 30.00 5.88 NVSS
TGSSADR J184853.8+323729 18 48 53.81 +32 37 28.92 5.89 GMRTAS150M
WN 1847.1+3236A 18 48 53.90 +32 37 28.92 5.89 WENSS
3 NVSS J184811+322902 18 48 11.81 +32 29 03.12 6.56 NVSS
4 NVSS J184821+322625 18 48 21.91 +32 26 26.16 7.08 NVSS
5 NVSS J184830+324038 18 48 30.41 +32 40 39.00 8.12 NVSS
WN 1847.1+3236 18 48 58.51 +32 39 51.84 8.42 WENSS
VLSSr J184858.4+323952 18 48 58.51 +32 39 51.84 8.42 VLSSR
WN 1847.1+3236B 18 48 58.61 +32 39 55.08 8.48 WENSS
TGSSADR J184858.4+323956 18 48 58.51 +32 39 56.16 8.48 GMRTAS150M
6 NVSS J184858+323957 18 48 58.51 +32 39 56.88 8.50 NVSS
7 PCCS2 100 G062.42+14.80 18 48 37.30 +32 41 29.04 8.81 PCCS100GHZ
8 B2 1847+32 18 48 57.91 +32 40 41.16 9.06 DIXON
9 NVSS J184847+324147 18 48 47.40 +32 41 48.12 9.36 NVSS
WN 1846.9+3238 18 48 47.30 +32 41 48.84 9.37 WENSS
TGSSADR J184847.5+324150 18 48 47.50 +32 41 51.00 9.40 GMRTAS150M
PCCS2 030 G062.12+14.71 18 48 27.41 +32 23 08.88 9.77 PCCS030GHZ
10 NVSS J184827+322256 18 48 27.19 +32 22 55.92 9.99 NVSS
11 NVSS J184835+322215 18 48 35.71 +32 22 14.88 10.43 NVSS
TGSSADR J184835.7+322214 18 48 35.71 +32 22 14.88 10.43 GMRTAS150M
WN 1846.7+3218 18 48 35.81 +32 22 13.08 10.47 WENSS
12 [SHM2012] 870 18 48 20.90 +32 22 36.84 10.66 WMAPITNPTS
13 PCCS2 143 G062.44+14.84 18 48 29.59 +32 43 33.96 11.04 PCCS143GHZ
WK405 18 48 34.80 +32 43 42.96 11.06 DIXON
VLSSr J184834.1+324356 18 48 34.20 +32 43 55.92 11.29 VLSSR
B2 1846+32B 18 48 33.79 +32 43 57.00 11.31 DIXON
WN 1846.7+3240 18 48 34.39 +32 43 58.08 11.31 WENSS
GB6 J1848+3243 18 48 35.40 +32 43 59.16 11.32 GB6
TGSSADR J184834.2+324359 18 48 34.30 +32 43 59.16 11.34 GMRTAS150M
MITG J1848+3244a 18 48 34.51 +32 43 59.88 11.35 MITGB6CM
TXS 1846+326 18 48 34.20 +32 43 59.88 11.36 TEXAS
14 NVSS J184834+324400 18 48 34.39 +32 43 59.88 11.36 NVSS
1846+3240 18 48 35.59 +32 44 04.92 11.42 NORTH20CM
1846+3240 18 48 35.59 +32 44 04.92 11.42 NORTH6CM
15 PCCS2 217 G062.45+14.83 18 48 31.10 +32 43 59.88 11.42 PCCS217GHZ
VLSSr J184915.0+324109 18 49 15.00 +32 41 08.88 11.56 VLSSR
MITG J1848+3244b 18 48 35.90 +32 44 21.84 11.70 MITGB6CM
TGSSADR J184916.0+324124 18 49 16.10 +32 41 24.00 11.90 GMRTAS150M
WN 1847.4+3237 18 49 16.20 +32 41 22.92 11.91 WENSS
16 NVSS J184916+324124 18 49 16.20 +32 41 25.08 11.91 NVSS
17 PCCS2 044 G062.08+14.74 18 48 15.60 +32 21 37.08 12.00 PCCS044GHZ
18 WMAP J1848+3220 18 48 27.41 +32 20 40.92 12.18 WMAPPTSRC

Penn State University Goddard Space Flight Center Swift