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 21.66 -35 55 07.74 3.67 (1.50 ± 0.07) x 10-1 512 23.110 21.780
2 08 41 21.32 -35 57 15.89 3.91 (6.6 ± 0.5) x 10-2 197 13.940 13.190
3 08 41 51.79 -36 00 00.35 6.52 (4.9 ± 1.4) x 10-3 17 3.515 3.616

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 42 15.52 -35 55 09.08 6.93 (3.1 ± 1.1) x 10-3 11 2.817 2.901
2 08 40 44.96 -35 56 42.92 8.62 (2.3 ± 0.9) x 10-3 8 2.493 2.668

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
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

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 SAO 199508 08 41 21.38 -35 57 18.36 1.75 SAO
HIP 42640 08 41 21.36 -35 57 15.84 1.79 HIPPARCOS
CD-35 4948 08 41 21.36 -35 57 15.84 1.79 ACRS
PPM 285532 08 41 21.34 -35 57 15.84 1.79 PPM
HD 74208 08 41 21.36 -35 57 15.12 1.80 HIC
2 PMN J0841-3555 08 41 25.80 -35 55 44.04 3.07 PMN
MGPS J084121-355508 08 41 21.60 -35 55 09.12 3.76 MGPS2
3 NVSS J084121-355506 08 41 21.60 -35 55 05.88 3.80 NVSS
4 NVSS J084126-360238 08 41 26.81 -36 02 39.12 3.85 NVSS
5 Wray 16-26 08 41 12.00 -36 02 60.00 5.05 PLNEBULAE
6 ESO 083911-3552.0 08 41 08.64 -36 02 45.60 5.28 ESOUPPSALA
7 NVSS J084151-355954 08 41 51.50 -35 59 53.88 5.29 NVSS
8 PPM 741426 08 41 18.55 -35 52 40.08 6.31 PPM
9 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
10 PPM 741440 08 42 09.12 -36 00 02.52 8.83 PPM
11 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
MGPS J084036-360105 08 40 36.60 -36 01 05.16 10.23 MGPS2
12 NVSS J084036-360105 08 40 36.50 -36 01 05.88 10.25 NVSS
13 WDS J08407-3604 08 40 42.00 -36 04 00.12 10.29 WDS
HIP 42572 08 40 39.74 -36 04 06.24 10.74 HIPPARCOS
PPM 285522 08 40 39.72 -36 04 06.60 10.74 PPM
HD 74103 08 40 39.74 -36 04 07.32 10.74 HIC
CD-35 4930 08 40 39.70 -36 04 06.60 10.75 ACRS
SAO 199497 08 40 39.72 -36 04 08.40 10.75 SAO
14 WDS J08413-3547 08 41 18.00 -35 46 59.88 11.91 WDS
15 WDS J08407-3550 08 40 42.00 -35 49 59.88 12.51 WDS
16 PPM 741443 08 42 12.55 -35 49 55.20 12.97 PPM

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