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 J0558.1-2113

Field

Detected Excesses

Swift-XRT image of the field for 4FGL J0558.1-2113 Swift-XRT detections in the field for 4FGL J0558.1-2113

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 05 58 12.00 -21 20 12.74 5.17 (3.1 ± 0.8) x 10-3 21 3.680 3.784
2 05 57 28.94 -21 08 04.88 5.89 (2.5 ± 0.7) x 10-3 18 3.714 3.669
3 05 58 10.50 -21 23 36.49 4.01 (3.5 ± 1.1) x 10-3 74 7.281 3.316

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 05 57 38.26 -21 06 38.76 6.52 (1.6 ± 0.5) x 10-3 14 2.706 2.900
2 05 58 26.83 -21 10 10.86 6.52 (1.7 ± 0.7) x 10-3 15 2.506 2.552
3 05 58 14.83 -21 23 06.80 4.23 (1.4 ± 0.8) x 10-3 34 3.119 1.839
4 05 58 13.20 -21 21 45.88 5.05 (1.2 ± 0.6) x 10-3 23 2.508 1.830
5 05 58 10.51 -21 23 36.34 4.01 (1.6 ± 0.9) x 10-3 74 4.087 1.783
6 05 58 10.52 -21 23 36.14 4.01 (10 ± 6) x 10-4 74 2.407 1.537
7 05 58 14.83 -21 23 06.80 4.23 (1.1 ± 0.8) x 10-3 33 2.643 1.454
8 05 58 17.45 -21 24 06.40 4.63 (8 ± 7) x 10-4 18 3.425 1.266
9 05 58 14.74 -21 24 57.18 4.97 (6 ± 5) x 10-4 9 2.320 1.214
10 05 58 10.50 -21 23 36.43 4.01 (9 ± 8) x 10-4 72 4.047 1.146
11 05 58 10.60 -21 23 37.72 4.00 (7 ± 8) x 10-4 70 2.848 0.896
12 05 58 13.97 -21 23 16.79 4.10 (5 ± 7) x 10-4 37 3.380 0.685
13 05 58 10.60 -21 23 37.72 4.00 N/A 69 2.862 N/A

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 4FGL J0558.1-2113 Swift-XRT image with known radio, optical and UV sources for 4FGL J0558.1-2113

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1RXS J055810.8-212344 05 58 10.92 -21 23 35.88 10.04 ROSAT
Unknown 05 58 10.92 -21 23 35.88 10.04 ROSAT
2RXS J055810.2-212339 05 58 10.27 -21 23 39.12 10.09 ROSAT
2RXS J055810.2-212339 05 58 10.27 -21 23 39.12 10.09 ROSAT
1RXS J055810.8-212344 05 58 10.22 -21 23 39.48 10.09 ROSAT
1RXS J055810.8-212344 05 58 10.80 -21 23 44.16 10.18 ROSAT
1RXS J055810.8-212344 05 58 10.80 -21 23 44.52 10.18 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 PGC 831267 05 57 52.80 -21 12 27.00 3.50 PGC2003
2 PGC 830408 05 58 23.11 -21 16 24.96 4.70 PGC2003
DENISP_G_J0558278-211543 05 58 27.79 -21 15 42.84 5.29 DENISIGAL
PGC 148145 05 58 27.79 -21 15 42.84 5.29 PGC2003
QORG J055828.5-211544 05 58 28.51 -21 15 43.92 5.45 QORGCAT
3 NVSS J055828-211549 05 58 28.39 -21 15 50.04 5.47 NVSS
4 PGC 829822 05 57 59.59 -21 19 05.16 5.75 PGC2003
PGC 830458 05 58 29.30 -21 16 09.12 5.79 PGC2003
5 PGC 18143 05 57 43.99 -21 16 54.84 6.30 PGC2003
ESO 055535-2117.2 05 57 43.68 -21 16 58.80 6.40 ESOUPPSALA
6 PGC 830568 05 57 37.30 -21 15 33.84 7.19 PGC2003
7 NVSS J055840-211112 05 58 40.61 -21 11 12.12 8.20 NVSS
WISH B0555.7-2106 05 57 51.10 -21 05 57.84 8.48 WISH
8 NVSS J055751-210553 05 57 51.31 -21 05 53.16 8.53 NVSS
TGSSADR J055750.4-210551 05 57 50.40 -21 05 52.08 8.64 GMRTAS150M
GLEAM J055750-210538 05 57 50.81 -21 05 39.12 8.79 GLEAMEGCAT
9 NVSS J055840-210824 05 58 40.20 -21 08 24.00 9.33 NVSS
TGSSADR J055840.6-210826 05 58 40.70 -21 08 26.16 9.39 GMRTAS150M
10 NVSS J055810-212334 05 58 10.51 -21 23 34.08 10.01 NVSS
PGC 828863 05 58 10.80 -21 23 35.16 10.03 PGC2003
11 NVSS J055724-211047 05 57 25.01 -21 10 48.00 10.19 NVSS
12 PPM 725747 05 58 49.90 -21 17 27.96 10.72 PPM
GLEAM J055732-210520 05 57 32.30 -21 05 21.12 11.55 GLEAMEGCAT
WISH B0555.3-2105 05 57 31.30 -21 05 35.16 11.55 WISH
13 NVSS J055731-210516 05 57 31.51 -21 05 16.08 11.73 NVSS
TGSSADR J055731.4-210515 05 57 31.39 -21 05 15.00 11.76 GMRTAS150M
14 PGC 828841 05 57 39.00 -21 23 42.00 12.02 PGC2003
15 PGC 828498 05 57 55.20 -21 25 22.08 12.09 PGC2003
TGSSADR J055855.5-210920 05 58 55.51 -21 09 20.16 12.09 GMRTAS150M
16 NVSS J055855-210919 05 58 55.80 -21 09 20.16 12.15 NVSS
17 PGC 833230 05 58 51.79 -21 03 33.84 14.48 PGC2003
18 BD-21 1313 05 57 21.94 -21 03 32.76 14.54 ACRS
PPM 249643 05 57 21.94 -21 03 32.76 14.54 PPM
SAO 171061 05 57 21.91 -21 03 32.04 14.55 SAO
WISH B0555.1-2104 05 57 18.00 -21 04 31.08 14.59 WISH
19 NVSS J055717-210427 05 57 18.00 -21 04 27.84 14.63 NVSS
TGSSADR J055717.8-210428 05 57 17.90 -21 04 27.84 14.64 GMRTAS150M
GLEAM J055717-210425 05 57 17.71 -21 04 26.04 14.71 GLEAMEGCAT
WISH B0556.7-2102 05 58 51.50 -21 02 26.88 15.23 WISH
20 NVSS J055851-210215 05 58 51.19 -21 02 15.00 15.33 NVSS
TGSSADR J055852.0-210206 05 58 52.10 -21 02 07.08 15.57 GMRTAS150M

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