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 J0841.4-3558

Field

Detected Excesses
Swift-XRT image of the field for 1FGL J0841.4-3558 Swift-XRT detections in the field for 1FGL J0841.4-3558

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 08 41 21.64 -35 55 07.75 3.66 (1.28 ± 0.06) x 10-1 544 21.840 22.370
2 08 41 21.27 -35 57 15.89 3.84 (6.3 ± 0.4) x 10-2 242 14.340 14.630
3 08 41 51.67 -36 00 01.97 6.12 (4.7 ± 1.2) x 10-3 21 3.906 4.039
4 08 40 45.15 -35 56 50.18 7.71 (2.6 ± 0.8) x 10-3 11 2.801 3.154
5 08 42 15.51 -35 55 09.53 6.65 (2.6 ± 0.9) x 10-3 12 2.926 3.018

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 08 41 59.37 -35 57 16.31 7.48 (2.1 ± 0.8) x 10-3 12 2.636 2.770

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 1FGL J0841.4-3558 Swift-XRT image with known radio, optical and UV sources for 1FGL J0841.4-3558

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 HD 74208 08 41 21.31 -35 57 15.48 1.80 ROSAT
2RXS J084121.4-355704 08 41 21.46 -35 57 04.68 1.94 ROSAT
1RXS J084121.4-355704 08 41 21.41 -35 57 04.68 1.95 ROSAT
1RXS J084121.4-355704 08 41 21.41 -35 57 03.96 1.96 ROSAT
2 [MML2015] 5BZB J0841-3555 08 41 21.62 -35 55 05.88 3.80 null

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 PMN J0841-3555 08 41 25.80 -35 55 44.04 3.07 PMN
TGSSADR J084121.5-355509 08 41 21.60 -35 55 09.84 3.74 GMRTAS150M
MGPS J084121-355508 08 41 21.60 -35 55 09.12 3.76 MGPS2
2 NVSS J084121-355506 08 41 21.60 -35 55 05.88 3.80 NVSS
[MML2015] 5BZB J0841-3555 08 41 21.60 -35 55 05.88 3.80 ROMABZCAT
[PME2013] J0841-3555 08 41 21.70 -35 55 04.08 3.83 AT2FGLUS
[SPT2015] ATCA J0841-3555 08 41 21.70 -35 55 04.08 3.83 FER2FUSRID
3 NVSS J084126-360238 08 41 26.81 -36 02 39.12 3.85 NVSS
4 NVSS J084151-355954 08 41 51.50 -35 59 53.88 5.29 NVSS
5 NVSS J084053-355659 08 40 53.71 -35 57 00.00 6.77 NVSS
MGPS J084053-355706 08 40 53.40 -35 57 06.84 6.78 MGPS2
TGSSADR J084053.5-355658 08 40 53.59 -35 56 58.92 6.79 GMRTAS150M
6 NVSS J084131-360813 08 41 31.70 -36 08 12.84 9.49 NVSS
MGPS J084131-360817 08 41 31.39 -36 08 17.16 9.55 MGPS2
TGSSADR J084131.6-360818 08 41 31.61 -36 08 18.96 9.58 GMRTAS150M
MGPS J084036-360105 08 40 36.60 -36 01 05.16 10.23 MGPS2
TGSSADR J084036.6-360108 08 40 36.60 -36 01 09.12 10.24 GMRTAS150M
7 NVSS J084036-360105 08 40 36.50 -36 01 05.88 10.25 NVSS

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