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 J0826.0-0157

Field

Detected Excesses

Swift-XRT image of the field for 4FGL J0826.0-0157 Swift-XRT detections in the field for 4FGL J0826.0-0157

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 08 25 56.06 -02 02 16.57 5.11 (5.0 ± 1.0) x 10-3 37 5.133 4.920
2 08 26 10.89 -02 04 59.49 5.28 (4.4 ± 1.0) x 10-3 26 4.436 4.396
3 08 26 19.78 -02 07 00.97 6.21 (2.8 ± 0.7) x 10-3 18 3.658 3.752

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 26 02.32 -01 57 24.06 5.96 (1.8 ± 0.7) x 10-3 22 2.710 2.726
2 08 26 33.80 -01 59 06.73 5.96 (1.6 ± 0.6) x 10-3 16 2.793 2.606
3 08 26 03.60 -02 06 40.71 6.41 (1.3 ± 0.6) x 10-3 11 2.359 2.314

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 4FGL J0826.0-0157 Swift-XRT image with known radio, optical and UV sources for 4FGL J0826.0-0157

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2RXS J082553.6-020101 08 25 53.64 -02 01 01.56 4.65 ROSAT
2RXS J082553.6-020101 08 25 53.64 -02 01 01.56 4.65 ROSAT
2 2RXS J082615.0-020832 08 26 15.10 -02 08 32.64 11.44 ROSAT
2RXS J082615.0-020832 08 26 15.10 -02 08 32.64 11.44 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
GLEAM J082609-015429 08 26 09.60 -01 54 29.16 3.09 GLEAMEGCAT
1 NVSS J082609-015428 08 26 10.01 -01 54 29.16 3.13 NVSS
QORG J082609.8-015426 08 26 09.79 -01 54 25.92 3.16 QORGCAT
GLEAM J082551-015845 08 25 52.01 -01 58 45.84 3.57 GLEAMEGCAT
2 NVSS J082552-015850 08 25 52.01 -01 58 50.88 3.59 NVSS
TGSSADR J082551.7-015849 08 25 51.79 -01 58 49.08 3.64 GMRTAS150M
3 NVSS J082550-015621 08 25 50.69 -01 56 21.12 3.76 NVSS
4 NVSS J082618-015300 08 26 18.00 -01 52 59.88 5.42 NVSS
5 V481 Hya 08 25 45.62 -01 54 33.84 5.62 GCVS
6 NVSS J082628-015748 08 26 28.51 -01 57 47.88 5.86 NVSS
7 PGC 152404 08 25 54.50 -01 51 54.00 6.08 PGC2003
DENISP_G_J0825544-015154 08 25 54.41 -01 51 54.00 6.09 DENISIGAL
8 PGC 180866 08 25 25.20 -01 59 09.96 10.14 PGC2003
9 PGC 1109885 08 25 39.31 -01 47 39.84 11.66 PGC2003
QORG J082611.2-014540 08 26 11.21 -01 45 39.96 11.80 QORGCAT
10 NVSS J082611-014539 08 26 11.40 -01 45 39.96 11.81 NVSS
11 SAO 135922 08 26 52.46 -01 55 04.80 12.05 SAO
PPM 177447 08 26 52.56 -01 55 05.16 12.07 PPM
BD-01 2038 08 26 52.56 -01 55 05.88 12.07 ACRS
12 PPM 177440 08 25 31.46 -02 06 48.60 12.64 PPM
BD-01 2036 08 25 31.44 -02 06 48.96 12.65 ACRS
PPM 177439 08 25 31.27 -02 06 52.20 12.72 PPM
BD-01 2036 08 25 31.22 -02 06 52.20 12.73 ACRS
13 NVSS J082520-015103 08 25 20.11 -01 51 02.88 12.91 NVSS
WDS J08255-0207 08 25 30.00 -02 07 00.12 13.03 WDS
14 CRATES J082517-020453 08 25 19.10 -02 04 54.84 13.77 CRATES
PMN J0825-0204 08 25 17.30 -02 04 53.04 14.12 PMN
GLEAM J082517-020500 08 25 17.21 -02 04 59.88 14.21 GLEAMEGCAT
15 PGC 1110132 08 26 48.00 -01 47 06.00 14.84 PGC2003
TGSSADR J082650.9-020708 08 26 51.00 -02 07 08.04 15.06 GMRTAS150M
16 NVSS J082651-020708 08 26 51.19 -02 07 08.04 15.09 NVSS
17 PGC 1109926 08 26 51.31 -01 47 33.00 15.15 PGC2003
18 NVSS J082520-014711 08 25 20.21 -01 47 11.04 15.15 NVSS
TGSSADR J082520.1-014712 08 25 20.21 -01 47 12.12 15.15 GMRTAS150M
GLEAM J082651-020716 08 26 51.79 -02 07 15.96 15.29 GLEAMEGCAT
GLEAM J082519-014649 08 25 19.90 -01 46 50.16 15.45 GLEAMEGCAT
19 NVSS J082519-014558 08 25 19.30 -01 45 57.96 16.15 NVSS

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