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 J2050.4-3015

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J2050.4-3015 Swift-XRT detections in the field for 4FGL J2050.4-3015


No detected excesses found.

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 20 50 21.86 -30 25 08.11 7.27 (3.3 ± 1.2) x 10-3 11 2.887 2.796
2 20 51 27.51 -30 18 42.93 8.27 (6 ± 3) x 10-3 7 2.362 2.393

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J2050.4-3015 Swift-XRT image with known radio, optical and UV sources for 4FGL J2050.4-3015


No known X-ray or gamma ray sources found.

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 PGC 718924 20 50 38.11 -30 17 54.96 3.77 PGC2003
2 NVSS J205008-301349 20 50 08.40 -30 13 50.16 3.99 NVSS
3 PGC 720756 20 50 38.21 -30 09 12.96 6.64 PGC2003
4 NVSS J205040-300803 20 50 40.70 -30 08 03.84 7.91 NVSS
5 PGC 162740 20 50 20.50 -30 23 39.84 8.46 PGC2003
DENISP_G_J2050203-302340 20 50 20.30 -30 23 39.84 8.47 DENISIGAL
6 HIP 102861 20 50 19.25 -30 06 10.44 9.21 HIPPARCOS
PPM 300674 20 50 19.25 -30 06 10.08 9.21 PPM
CD-3018215 20 50 19.20 -30 06 10.08 9.22 ACRS
HD 198297 20 50 19.18 -30 06 09.36 9.23 HIC
SAO 212481 20 50 19.13 -30 06 07.92 9.26 SAO
7 PGC 717666 20 50 14.50 -30 24 15.12 9.29 PGC2003
8 PGC 717641 20 50 37.99 -30 24 24.84 9.52 PGC2003
9 NVSS J205049-302340 20 50 49.70 -30 23 39.84 9.87 NVSS
10 SAO 212480 20 50 17.35 -30 25 22.44 10.26 SAO
CD-3018214 20 50 17.18 -30 25 24.24 10.29 ACRS
HIP 102856 20 50 17.16 -30 25 24.24 10.29 HIPPARCOS
PPM 300673 20 50 17.18 -30 25 24.24 10.29 PPM
HD 198280 20 50 17.16 -30 25 24.24 10.30 HIC
SUMSS J205029-300429 20 50 29.21 -30 04 28.92 10.81 SUMSS
11 PGC 720917 20 51 04.39 -30 08 24.00 10.83 PGC2003
TGSSADR J205029.1-300423 20 50 29.21 -30 04 23.16 10.91 GMRTAS150M
12 NVSS J205029-300423 20 50 29.21 -30 04 23.16 10.92 NVSS
GLEAM J205029-300422 20 50 29.30 -30 04 22.08 10.94 GLEAMEGCAT
13 SAO 212468 20 49 43.94 -30 06 48.60 12.37 SAO
CD-3018207 20 49 43.94 -30 06 46.08 12.39 ACRS
PPM 300658 20 49 43.99 -30 06 45.36 12.40 PPM
14 PPM 300664 20 49 53.59 -30 04 52.68 12.50 PPM
CD-3018211 20 49 53.62 -30 04 52.32 12.50 ACRS
SAO 212473 20 49 53.76 -30 04 49.44 12.52 SAO
15 PGC 717272 20 49 49.99 -30 26 12.84 13.37 PGC2003
QORG J204933.0-302340 20 49 33.00 -30 23 39.84 14.13 QORGCAT
16 NVSS J204932-302340 20 49 32.90 -30 23 40.92 14.15 NVSS
DENISP_G_J2049326-302348 20 49 32.59 -30 23 48.12 14.28 DENISIGAL
PGC 162713 20 49 32.59 -30 23 48.84 14.28 PGC2003

Penn State University Goddard Space Flight Center Swift