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.

4FGL J0409.4-3822

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J0409.4-3822 Swift-XRT detections in the field for 4FGL J0409.4-3822

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 04 09 23.03 -38 20 31.29 5.89 (4.8 ± 1.3) x 10-3 21 3.846 3.685
2 04 09 01.34 -38 25 58.68 6.12 (4.0 ± 1.1) x 10-3 18 3.524 3.555

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 04 09 41.86 -38 14 50.81 5.76 (2.1 ± 0.9) x 10-3 20 2.780 2.372
2 04 09 41.86 -38 14 50.81 5.76 (2.2 ± 1.0) x 10-3 20 2.401 2.357
3 04 08 44.78 -38 17 47.19 6.52 (1.9 ± 0.8) x 10-3 9 2.485 2.278
4 04 09 36.21 -38 14 50.05 6.12 (1.9 ± 0.8) x 10-3 14 2.642 2.269

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J0409.4-3822 Swift-XRT image with known radio, optical and UV sources for 4FGL J0409.4-3822

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2RXS J040922.9-382110 04 09 22.94 -38 21 10.44 0.96 ROSAT
2RXS J040922.9-382110 04 09 22.94 -38 21 10.44 0.96 ROSAT
2 1RXS J040904.9-382617 04 09 04.90 -38 26 17.16 5.81 ROSAT
2RXS J040904.0-382618 04 09 04.06 -38 26 18.24 5.94 ROSAT
2RXS J040904.0-382618 04 09 04.06 -38 26 18.24 5.94 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J040916-382100 04 09 16.01 -38 21 01.08 2.05 NVSS
2 PGC 112018 04 09 07.61 -38 18 33.12 4.89 PGC2003
QORG J040940.7-381744 04 09 40.70 -38 17 44.16 5.28 QORGCAT
3 NVSS J040940-381743 04 09 40.80 -38 17 43.08 5.29 NVSS
4 NVSS J040946-382615 04 09 46.80 -38 26 15.00 6.00 NVSS
5 PGC 610919 04 09 10.61 -38 16 18.84 6.38 PGC2003
6 NVSS J040937-382820 04 09 37.51 -38 28 21.00 6.77 NVSS
GLEAM J040900-382700 04 09 00.50 -38 27 01.08 6.94 GLEAMEGCAT
7 NVSS J040900-382702 04 09 00.10 -38 27 02.16 7.01 NVSS
SUMSS J040900-382701 04 09 00.00 -38 27 01.08 7.01 SUMSS
TGSSADR J040859.9-382701 04 08 59.90 -38 27 02.16 7.03 GMRTAS150M
8 NVSS J040940-381528 04 09 40.99 -38 15 28.08 7.27 NVSS
9 NVSS J040846-382000 04 08 46.99 -38 19 59.88 7.74 NVSS
10 PGC 610664 04 08 47.21 -38 17 33.00 8.68 PGC2003
11 PGC 609982 04 10 09.41 -38 20 57.84 8.75 PGC2003
12 NVSS J040907-381238 04 09 07.30 -38 12 38.88 10.02 NVSS
13 PGC 609461 04 08 34.30 -38 23 53.88 10.13 PGC2003
SUMSS J040907-381221 04 09 07.51 -38 12 20.88 10.27 SUMSS
14 NVSS J041015-382542 04 10 15.79 -38 25 41.88 10.60 NVSS
15 NVSS J040852-383055 04 08 52.80 -38 30 55.08 10.91 NVSS
SUMSS J040854-381233 04 08 54.10 -38 12 33.12 11.26 SUMSS
16 NVSS J040854-381230 04 08 54.19 -38 12 30.96 11.29 NVSS
GLEAM J040853-381234 04 08 53.59 -38 12 33.84 11.31 GLEAMEGCAT
QORG J040854.2-381228 04 08 54.19 -38 12 28.08 11.33 QORGCAT
17 PGC 607775 04 08 58.61 -38 32 60.00 12.13 PGC2003
18 PGC 608144 04 08 42.50 -38 30 59.04 12.24 PGC2003
19 PGC 112021 04 10 25.01 -38 18 36.00 12.24 PGC2003
20 PGC 103136 04 09 43.39 -38 10 15.96 12.30 PGC2003
21 PGC 112015 04 08 34.39 -38 30 59.04 13.37 PGC2003
22 NVSS J040854-383358 04 08 54.10 -38 33 57.96 13.39 NVSS
23 PGC 125445 04 08 25.70 -38 30 23.04 14.32 PGC2003
24 PGC 612128 04 08 30.79 -38 10 24.96 15.76 PGC2003

Penn State University Goddard Space Flight Center Swift