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 J1539.2-3324

Field

Detected Excesses

Swift-XRT image of the field for 3FGL J1539.2-3324 Swift-XRT detections in the field for 3FGL J1539.2-3324

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 15 39 51.76 -33 22 25.87 3.75 (2.1 ± 0.2) x 10-3 214 10.800 10.330
2 15 39 24.61 -33 28 36.25 3.83 (1.5 ± 0.2) x 10-3 177 8.655 8.741
3 15 39 48.89 -33 32 40.10 3.95 (9 ± 2) x 10-4 98 6.495 6.096
4 15 38 12.92 -33 22 56.58 3.99 (6.3 ± 1.2) x 10-4 67 5.691 5.240
5 15 38 54.16 -33 34 59.21 3.92 (6.5 ± 1.3) x 10-4 102 6.076 5.197
6 15 39 39.33 -33 25 31.72 3.87 (7.1 ± 1.4) x 10-4 130 5.330 5.082
7 15 38 47.79 -33 17 12.53 3.84 (5.6 ± 1.2) x 10-4 91 4.421 4.690
8 15 39 01.15 -33 27 10.91 3.99 (5.5 ± 1.2) x 10-4 89 4.266 4.683
9 15 39 09.28 -33 30 20.97 4.00 (5.0 ± 1.1) x 10-4 80 4.155 4.408
10 15 39 37.83 -33 19 42.29 3.85 (5.2 ± 1.2) x 10-4 120 4.294 4.339
11 15 39 50.69 -33 30 14.13 3.89 (4.1 ± 1.1) x 10-4 93 3.667 3.671
12 15 38 44.73 -33 21 32.19 3.91 (4.1 ± 1.2) x 10-4 84 3.700 3.567
13 15 39 24.79 -33 17 36.72 3.89 (3.9 ± 1.1) x 10-4 93 3.801 3.450
14 15 39 38.06 -33 24 11.39 3.88 (4.0 ± 1.2) x 10-4 130 3.273 3.327
15 15 40 00.20 -33 26 16.45 3.88 (3.7 ± 1.1) x 10-4 80 4.069 3.315
16 15 38 17.23 -33 27 31.55 4.05 (3.2 ± 1.0) x 10-4 45 3.530 3.272
17 15 38 22.89 -33 19 08.57 4.00 (3.2 ± 1.0) x 10-4 52 3.547 3.189
18 15 39 55.99 -33 30 16.66 3.98 (3.6 ± 1.1) x 10-4 62 3.363 3.135

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 15 38 38.10 -33 29 19.14 3.94 (2.7 ± 1.0) x 10-4 69 3.039 2.786
2 15 39 32.10 -33 17 15.28 3.88 (2.6 ± 1.0) x 10-4 104 3.101 2.625
3 15 39 54.35 -33 23 56.45 3.84 (2.4 ± 1.0) x 10-4 106 3.617 2.462
4 15 39 38.46 -33 21 21.19 3.86 (2.3 ± 1.0) x 10-4 112 3.040 2.369
5 15 38 39.09 -33 18 37.70 3.84 (1.9 ± 1.0) x 10-4 94 3.221 1.925

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 3FGL J1539.2-3324 Swift-XRT image with known radio, optical and UV sources for 3FGL J1539.2-3324


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 NVSS J153911-332209 15 39 11.50 -33 22 09.12 2.98 NVSS
[SPT2015] ATCA J1539-3322 15 39 11.59 -33 22 05.88 3.03 FER2FUSRID
[PME2013] J1539-3322 15 39 11.59 -33 22 05.88 3.03 AT2FGLUS
2 TGSSADR J153933.2-332540 15 39 33.31 -33 25 41.16 3.37 GMRTAS150M
3 NVSS J153929-332201 15 39 29.21 -33 22 00.84 3.72 NVSS
GLEAM J153940-332216 15 39 40.39 -33 22 17.04 5.41 GLEAMEGCAT
4 NVSS J153941-332225 15 39 41.30 -33 22 26.04 5.50 NVSS
TGSSADR J153941.2-332222 15 39 41.21 -33 22 22.08 5.51 GMRTAS150M
SUMSS J153941-332215 15 39 41.30 -33 22 14.88 5.58 SUMSS
5 PCCS2 030 G338.67+17.66 15 38 34.70 -33 22 06.96 9.36 PCCS030GHZ
6 NVSS J153916-331504 15 39 16.39 -33 15 03.96 9.78 NVSS
7 NVSS J153949-333240 15 39 49.20 -33 32 39.84 10.22 NVSS
8 NVSS J153822-332547 15 38 22.51 -33 25 48.00 11.54 NVSS
9 NVSS J153821-333137 15 38 21.79 -33 31 37.92 13.47 NVSS
SUMSS J153821-333135 15 38 21.70 -33 31 36.12 13.48 SUMSS
TGSSADR J153821.2-333131 15 38 21.29 -33 31 31.08 13.51 GMRTAS150M
GLEAM J153821-333135 15 38 21.29 -33 31 36.12 13.54 GLEAMEGCAT

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