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.

1FGL J1536.5-4949

Field

Detected Excesses

Swift-XRT image of the field for 1FGL J1536.5-4949 Swift-XRT detections in the field for 1FGL J1536.5-4949

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 15 36 11.28 -49 44 57.83 4.49 (9.5 ± 1.4) x 10-3 62 6.973 6.975
2 15 37 35.99 -49 48 27.84 6.21 (4.1 ± 1.0) x 10-3 18 3.162 3.993
3 15 37 10.28 -49 56 18.36 5.89 (2.2 ± 0.7) x 10-3 17 3.156 3.113

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 36 56.29 -49 46 48.59 6.12 (2.1 ± 0.7) x 10-3 17 2.918 2.996
2 15 35 55.27 -49 42 12.33 4.28 (2.8 ± 1.0) x 10-3 43 4.355 2.749
3 15 36 40.16 -49 48 43.90 6.52 (1.7 ± 0.6) x 10-3 15 2.531 2.610
4 15 37 29.14 -49 44 25.06 6.41 (1.4 ± 0.6) x 10-3 12 2.362 2.448
5 15 35 55.29 -49 42 12.29 4.28 (2.0 ± 0.8) x 10-3 43 3.495 2.409
6 15 36 35.59 -49 43 15.67 5.40 (1.5 ± 0.7) x 10-3 19 2.492 2.167
7 15 35 59.37 -49 42 52.73 4.22 (1.2 ± 0.8) x 10-3 47 4.548 1.611
8 15 35 59.52 -49 43 00.95 4.25 (1.1 ± 0.7) x 10-3 49 3.561 1.582

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 1FGL J1536.5-4949 Swift-XRT image with known radio, optical and UV sources for 1FGL J1536.5-4949

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 3XMM J153640.1-494843 15 36 40.15 -49 48 43.56 0.90 XMM-NEWTON
2 3XMM J153618.7-494957 15 36 18.77 -49 49 57.36 2.76 XMM-NEWTON
3 3XMM J153648.6-495049 15 36 48.62 -49 50 49.92 2.81 XMM-NEWTON
4 3XMM J153632.0-494613 15 36 32.81 -49 46 13.08 2.90 XMM-NEWTON
5 3XMM J153638.4-494611 15 36 38.40 -49 46 11.28 2.94 XMM-NEWTON
6 3XMM J153655.4-495000 15 36 55.44 -49 50 00.24 3.43 XMM-NEWTON
7 3XMM J153613.3-494943 15 36 13.34 -49 49 43.68 3.55 XMM-NEWTON
8 3XMM J153644.0-494549 15 36 43.99 -49 45 49.68 3.56 XMM-NEWTON
9 3XMM J153654.8-495045 15 36 54.84 -49 50 45.24 3.61 XMM-NEWTON
10 3XMM J153654.0-494710 15 36 54.41 -49 47 10.68 3.61 XMM-NEWTON
11 3XMM J153625.2-494527 15 36 25.25 -49 45 27.72 3.94 XMM-NEWTON
3XMM J153656.2-494651 15 36 56.28 -49 46 51.96 4.09 XMM-NEWTON
12 3XMM J153650.3-494543 15 36 50.35 -49 45 43.56 4.17 XMM-NEWTON
13 3XMM J153609.2-494930 15 36 09.24 -49 49 30.72 4.18 XMM-NEWTON
14 3XMM J153627.6-494458 15 36 27.60 -49 44 58.56 4.27 XMM-NEWTON
15 3XMM J153638.6-494440 15 36 38.66 -49 44 40.56 4.44 XMM-NEWTON
16 3XMM J153608.3-494753 15 36 08.30 -49 47 53.88 4.46 XMM-NEWTON
17 3XMM J153654.5-494501 15 36 54.53 -49 45 01.80 5.13 XMM-NEWTON
18 3XMM J153609.9-495244 15 36 09.98 -49 52 44.40 5.44 XMM-NEWTON
19 3XMM J153611.2-494500 15 36 11.30 -49 45 00.00 5.59 XMM-NEWTON
20 3XMM J153634.6-494316 15 36 34.66 -49 43 16.68 5.80 XMM-NEWTON
21 3XMM J153700.0-494442 15 37 00.19 -49 44 42.36 5.96 XMM-NEWTON
3XMM J153700.2-494422 15 37 00.24 -49 44 22.92 6.22 XMM-NEWTON
22 3XMM J153703.9-495338 15 37 03.91 -49 53 38.76 6.52 XMM-NEWTON
23 3XMM J153604.4-494433 15 36 04.44 -49 44 33.36 6.69 XMM-NEWTON
24 3XMM J153638.4-494222 15 36 38.40 -49 42 22.68 6.73 XMM-NEWTON
25 3XMM J153705.5-494358 15 37 05.52 -49 43 58.08 7.10 XMM-NEWTON
26 3XMM J153650.8-495602 15 36 50.83 -49 56 02.76 7.42 XMM-NEWTON
27 3XMM J153704.0-494255 15 37 04.10 -49 42 55.80 7.73 XMM-NEWTON
28 3XMM J153624.1-495638 15 36 24.14 -49 56 38.40 7.76 XMM-NEWTON
29 3XMM J153608.5-495534 15 36 08.54 -49 55 34.68 7.77 XMM-NEWTON
30 3XMM J153617.9-495628 15 36 18.00 -49 56 27.96 7.88 XMM-NEWTON
31 3XMM J153635.4-494102 15 36 35.47 -49 41 02.04 8.04 XMM-NEWTON
32 3XMM J153550.9-494513 15 35 50.95 -49 45 12.96 8.09 XMM-NEWTON
33 3XMM J153559.6-494306 15 35 59.66 -49 43 06.24 8.26 XMM-NEWTON
34 3XMM J153633.4-495730 15 36 33.48 -49 57 30.60 8.43 XMM-NEWTON
35 3XMM J153723.6-494548 15 37 23.64 -49 45 48.24 8.51 XMM-NEWTON
36 3XMM J153713.4-495455 15 37 13.42 -49 54 55.44 8.51 XMM-NEWTON
37 3XMM J153634.3-495803 15 36 34.39 -49 58 03.72 8.98 XMM-NEWTON
38 3XMM J153710.6-495610 15 37 10.66 -49 56 11.04 9.14 XMM-NEWTON
39 3XMM J153554.6-494226 15 35 54.67 -49 42 25.92 9.31 XMM-NEWTON
40 3XMM J153603.5-495703 15 36 03.53 -49 57 03.96 9.46 XMM-NEWTON
41 3XMM J153544.7-495409 15 35 44.78 -49 54 10.08 9.56 XMM-NEWTON
42 3XMM J153627.9-493928 15 36 27.94 -49 39 28.80 9.67 XMM-NEWTON
43 3XMM J153621.3-493934 15 36 21.36 -49 39 34.56 9.76 XMM-NEWTON
44 3XMM J153535.4-494711 15 35 35.42 -49 47 11.76 9.80 XMM-NEWTON
45 3XMM J153736.3-494826 15 37 36.38 -49 48 25.92 9.92 XMM-NEWTON
46 3XMM J153549.4-494155 15 35 49.46 -49 41 55.32 10.26 XMM-NEWTON
47 3XMM J153738.3-495114 15 37 38.30 -49 51 14.04 10.43 XMM-NEWTON
48 3XMM J153639.3-493814 15 36 39.31 -49 38 15.00 10.85 XMM-NEWTON
49 3XMM J153734.0-495433 15 37 34.51 -49 54 33.12 10.98 XMM-NEWTON
50 3XMM J153529.1-494556 15 35 29.16 -49 45 56.16 11.08 XMM-NEWTON
51 3XMM J153634.4-500010 15 36 34.42 -50 00 10.08 11.09 XMM-NEWTON
52 3XMM J153534.3-495432 15 35 34.34 -49 54 32.04 11.19 XMM-NEWTON
53 3XMM J153600.1-495850 15 36 00.17 -49 58 50.52 11.26 XMM-NEWTON
54 3XMM J153541.8-495624 15 35 41.88 -49 56 24.72 11.27 XMM-NEWTON
55 3XMM J153549.9-495820 15 35 49.94 -49 58 19.92 11.76 XMM-NEWTON
56 3XMM J153744.2-495327 15 37 44.28 -49 53 27.24 11.99 XMM-NEWTON
57 3XMM J153520.7-495021 15 35 20.74 -49 50 21.12 12.04 XMM-NEWTON
58 3XMM J153527.5-495431 15 35 27.53 -49 54 32.04 12.16 XMM-NEWTON
59 3XMM J153659.9-500035 15 36 59.93 -50 00 35.64 12.19 XMM-NEWTON
60 3XMM J153735.6-494102 15 37 35.64 -49 41 02.76 12.67 XMM-NEWTON
61 3XMM J153740.4-494120 15 37 40.46 -49 41 20.40 13.11 XMM-NEWTON
62 3XMM J153542.0-495931 15 35 42.79 -49 59 31.56 13.48 XMM-NEWTON
63 3XMM J153522.2-494140 15 35 22.25 -49 41 40.56 13.89 XMM-NEWTON
64 3XMM J153726.3-500026 15 37 26.35 -50 00 26.64 14.05 XMM-NEWTON
65 3XMM J153726.4-493740 15 37 26.42 -49 37 40.80 14.11 XMM-NEWTON

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 TGSSADR J153656.0-494652 15 36 56.11 -49 46 53.04 4.05 GMRTAS150M
MGPS J153656-494650 15 36 56.21 -49 46 50.16 4.10 MGPS2
2 TGSSADR J153611.6-494459 15 36 11.59 -49 45 00.00 5.56 GMRTAS150M
MGPS J153611-494456 15 36 11.81 -49 44 56.04 5.59 MGPS2
3 PSR J1536-4948 15 36 00.00 -49 47 60.00 5.75 ATNFPULSAR
1532-495 15 36 10.51 -49 44 52.08 5.78 MRC
ATPMN J153610.6-494440 15 36 10.70 -49 44 39.84 5.91 ATPMNCAT
4 PMN J1536-4944 15 36 11.21 -49 44 30.12 5.98 PMN
5 MSH 15-404 15 36 01.39 -49 53 56.04 7.26 DIXON
6 MGPS J153559-494301 15 35 59.50 -49 43 00.84 8.34 MGPS2
TGSSADR J153559.3-494256 15 35 59.30 -49 42 56.16 8.42 GMRTAS150M
7 MGPS J153638-495755 15 36 38.11 -49 57 56.16 8.86 MGPS2
8 MGPS J153550-495454 15 35 50.21 -49 54 55.08 9.28 MGPS2
9 MGPS J153735-494914 15 37 35.40 -49 49 14.88 9.74 MGPS2
10 MGPS J153657-493719 15 36 57.60 -49 37 19.92 12.31 MGPS2

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