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 11.29 -49 44 57.78 4.51 (9.5 ± 1.4) x 10-3 61 6.903 6.936
2 15 37 35.99 -49 48 27.84 6.21 (4.1 ± 1.0) x 10-3 18 3.167 3.993
3 15 37 10.28 -49 56 18.36 5.89 (2.2 ± 0.7) x 10-3 17 3.162 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 2.921 2.996
2 15 35 55.27 -49 42 12.33 4.28 (2.9 ± 1.0) x 10-3 43 4.361 2.760
3 15 36 40.16 -49 48 43.90 6.52 (1.7 ± 0.6) x 10-3 15 2.533 2.610
4 15 37 29.14 -49 44 25.06 6.41 (1.4 ± 0.6) x 10-3 12 2.367 2.448
5 15 35 55.29 -49 42 12.29 4.28 (2.0 ± 0.8) x 10-3 43 3.502 2.409
6 15 36 35.26 -49 43 14.08 5.44 (1.5 ± 0.7) x 10-3 18 2.496 2.184
7 15 35 58.57 -49 42 47.11 4.22 (1.2 ± 0.8) x 10-3 49 4.553 1.611
8 15 35 59.68 -49 42 59.27 4.26 (1.1 ± 0.7) x 10-3 50 3.567 1.597

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


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 MGPS J153656-494650 15 36 56.21 -49 46 50.16 4.10 MGPS2
2 PGC 3077364 15 36 26.40 -49 44 15.00 5.03 PGC2003
3 MGPS J153611-494456 15 36 11.81 -49 44 56.04 5.59 MGPS2
1532-495 15 36 10.51 -49 44 52.08 5.78 MRC
PMN J1536-4944 15 36 11.21 -49 44 30.12 5.98 PMN
4 MSH 15-404 15 36 01.39 -49 53 56.04 7.26 DIXON
5 PPM 320773 15 36 23.52 -49 41 33.00 7.76 PPM
CD-49 9792 15 36 23.52 -49 41 32.28 7.77 ACRS
SAO 225958 15 36 23.33 -49 41 32.64 7.77 SAO
6 MGPS J153559-494301 15 35 59.50 -49 43 00.84 8.34 MGPS2
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 PPM 761289 15 35 52.66 -49 41 43.08 10.05 PPM
11 CD-49 9785 15 35 53.47 -49 58 25.68 11.49 ACRS
HD 138725 15 35 53.50 -49 58 26.04 11.50 HIC
PPM 320762 15 35 53.47 -49 58 26.04 11.50 PPM
HIP 76373 15 35 53.47 -49 58 26.04 11.50 HIPPARCOS
SAO 225946 15 35 53.40 -49 58 26.04 11.51 SAO
12 MGPS J153657-493719 15 36 57.60 -49 37 19.92 12.31 MGPS2
13 CD-49 9817 15 37 40.08 -50 00 09.00 15.25 ACRS
SAO 225994 15 37 40.01 -50 00 10.08 15.25 SAO
PPM 344007 15 37 40.08 -50 00 10.08 15.26 PPM

Penn State University Goddard Space Flight Center Swift