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 J1623.7-2315c

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1623.7-2315c Swift-XRT detections in the field for 4FGL J1623.7-2315c

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 16 23 34.03 -23 17 50.13 4.69 (2.5 ± 0.4) x 10-2 57 7.019 7.003
2 16 24 13.50 -23 22 29.12 5.82 (9 ± 2) x 10-3 23 4.358 4.319

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 16 23 51.81 -23 17 31.21 6.78 (4 ± 2) x 10-3 14 2.764 2.825

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1623.7-2315c Swift-XRT image with known radio, optical and UV sources for 4FGL J1623.7-2315c

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1RXS J162355.3-232205 16 23 55.30 -23 22 05.16 7.36 ROSAT
2 1WGA J1624.2-2321 16 24 13.20 -23 22 00.12 9.69 ROSAT
2RXP J162413.1-232216 16 24 13.13 -23 22 17.04 9.88 ROSAT
1WGA J1624.2-2322 16 24 13.61 -23 22 13.80 9.92 ROSAT
3 2CXO J162250.9-232014 16 22 50.98 -23 20 15.00 12.82 CHANDRA
4 2RXP J162252.2-230729 16 22 52.15 -23 07 30.00 13.99 ROSAT
1WGA J1622.8-2307 16 22 51.70 -23 07 09.12 14.27 ROSAT
2RXP J162251.7-230708 16 22 51.65 -23 07 08.04 14.29 ROSAT
1WGA J1622.8-2307 16 22 50.59 -23 07 23.88 14.34 ROSAT
5 2RXP J162259.9-232630 16 22 59.86 -23 26 30.12 14.86 ROSAT
1WGA J1622.9-2326 16 22 59.71 -23 26 34.80 14.94 ROSAT
1WGA J1622.9-2326 16 22 59.30 -23 26 30.84 14.95 ROSAT
2RXP J162259.5-232633 16 22 59.45 -23 26 34.08 14.97 ROSAT
6 1WGA J1622.8-2325 16 22 51.31 -23 25 30.36 15.55 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
TGSSADR J162331.3-231334 16 23 31.39 -23 13 33.96 3.12 GMRTAS150M
1 NVSS J162331-231334 16 23 31.30 -23 13 33.96 3.12 NVSS
WISH B1620.5-2306 16 23 31.30 -23 13 33.96 3.13 WISH
TXS 1620-231 16 23 31.20 -23 13 33.96 3.16 TEXAS
GLEAM J162331-231328 16 23 31.39 -23 13 28.92 3.17 GLEAMEGCAT
QORG J162331.3-231330 16 23 31.30 -23 13 30.00 3.17 QORGCAT
TGSSADR J162341.3-231209 16 23 41.40 -23 12 09.00 3.20 GMRTAS150M
2 NVSS J162341-231208 16 23 41.30 -23 12 07.92 3.22 NVSS
WISH B1620.6-2305 16 23 41.40 -23 12 03.96 3.29 WISH
3 PMN J1623-2314 16 23 28.20 -23 14 03.84 3.53 PMN
4 PPM 732741 16 23 44.35 -23 18 53.28 3.58 PPM
5 QORG J162333.0-231815 16 23 33.00 -23 18 15.12 3.65 QORGCAT
6 NVSS J162409-231343 16 24 09.60 -23 13 42.96 6.41 NVSS
TGSSADR J162409.7-231343 16 24 09.70 -23 13 42.96 6.45 GMRTAS150M
WISH B1621.1-2306 16 24 09.79 -23 13 48.00 6.45 WISH
GLEAM J162409-231327 16 24 09.50 -23 13 27.84 6.47 GLEAMEGCAT
7 NVSS J162402-232231 16 24 02.50 -23 22 31.08 8.52 NVSS
8 QORG J162413.5-232226 16 24 13.49 -23 22 26.04 10.04 QORGCAT
9 NVSS J162419-232055 16 24 19.10 -23 20 54.96 10.08 NVSS
10 NVSS J162427-231655 16 24 27.60 -23 16 54.84 10.46 NVSS
11 NVSS J162432-231257 16 24 32.50 -23 12 56.88 11.73 NVSS
QORG J162432.8-231252 16 24 32.81 -23 12 51.84 11.80 QORGCAT
12 862- 7 16 22 58.87 -23 22 15.60 12.19 NLTT
13 WDS J16229-2307 16 22 54.00 -23 07 00.12 13.93 WDS
14 QORG J162251.7-230730 16 22 51.70 -23 07 30.00 14.07 QORGCAT
HD 147432 16 22 51.84 -23 07 06.60 14.27 HIC
QORG J162251.8-230707 16 22 51.79 -23 07 06.96 14.27 QORGCAT
BD-22 4159 16 22 51.79 -23 07 06.96 14.27 ACRS
HIP 80238 16 22 51.79 -23 07 07.32 14.27 HIPPARCOS
PPM 265468 16 22 51.77 -23 07 07.32 14.27 PPM
SAO 184350 16 22 51.86 -23 07 05.16 14.28 SAO
15 QORG J162259.8-232634 16 22 59.81 -23 26 34.08 14.91 QORGCAT
16 NVSS J162424-230319 16 24 24.31 -23 03 20.16 15.37 NVSS

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