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 J1757.4-3125

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1757.4-3125 Swift-XRT detections in the field for 4FGL J1757.4-3125

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 17 57 31.63 -31 34 40.56 5.40 (10 ± 2) x 10-3 28 4.700 4.503

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 17 57 33.07 -31 36 27.39 6.78 (3.2 ± 1.3) x 10-3 11 2.292 2.386
2 17 58 01.18 -31 29 12.70 6.41 (2.9 ± 1.3) x 10-3 12 2.355 2.206

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1757.4-3125 Swift-XRT image with known radio, optical and UV sources for 4FGL J1757.4-3125

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2RXS J175736.4-312225 17 57 36.43 -31 22 25.68 3.64 ROSAT
1RXS J175736.4-312225 17 57 36.41 -31 22 24.96 3.65 ROSAT
2 2RXS J175716.5-312901 17 57 16.54 -31 29 01.32 4.29 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 HD 318600 17 57 06.43 -31 22 54.84 4.52 HDEC
2 HD 318605 17 57 23.93 -31 30 11.88 5.08 HDEC
3 SAO 209518 17 57 26.04 -31 30 36.00 5.49 SAO
PPM 297051 17 57 25.99 -31 30 36.36 5.49 PPM
CD-3114858 17 57 25.99 -31 30 36.72 5.49 ACRS
4 SAO 209514 17 57 11.62 -31 30 17.64 5.90 SAO
PPM 297045 17 57 11.69 -31 30 19.08 5.91 PPM
CD-3114850 17 57 11.64 -31 30 19.08 5.92 ACRS
5 HD 318604 17 57 48.17 -31 21 45.36 5.99 HDEC
6 HD 318603 17 57 24.43 -31 18 48.24 6.32 HDEC
7 HD 318601 17 57 04.37 -31 20 01.68 6.73 HDEC
8 V1278 Sco 17 57 46.54 -31 20 06.36 6.81 GCVS
9 HD 318598 17 56 56.23 -31 28 37.20 7.05 HDEC
10 HD 318599 17 56 48.10 -31 24 41.40 7.87 HDEC
11 V749 Sco 17 56 48.05 -31 21 46.08 8.56 GCVS
12 HD 318602 17 57 20.16 -31 16 32.52 8.64 HDEC
13 NVSS J175720-311541 17 57 20.59 -31 15 41.04 9.48 NVSS
14 V1177 Sco 17 57 28.25 -31 15 29.88 9.65 GCVS
15 HD 318723 17 58 01.39 -31 31 02.28 9.77 HDEC
16 NVSS J175721-313457 17 57 21.10 -31 34 58.08 9.88 NVSS
17 TXS 1754-312 17 57 51.19 -31 16 54.12 9.95 TEXAS
18 NVSS J175803-313101 17 58 03.89 -31 31 00.84 10.19 NVSS
19 HD 318597 17 56 41.28 -31 30 06.12 10.56 HDEC
20 PPM 297033 17 56 42.89 -31 31 18.12 10.89 PPM
HIP 87839 17 56 42.86 -31 31 18.12 10.90 HIPPARCOS
CD-3114835 17 56 42.82 -31 31 18.48 10.90 ACRS
HD 163273 17 56 42.79 -31 31 18.12 10.91 HIC
SAO 209502 17 56 42.62 -31 31 18.48 10.94 SAO
21 NVSS J175808-313056 17 58 08.69 -31 30 56.16 11.00 NVSS
22 HD 318606 17 57 45.96 -31 35 44.52 11.53 HDEC
23 HD 318607 B 17 56 50.78 -31 34 04.44 11.54 HDEC
HD 318607 A 17 56 50.98 -31 34 10.92 11.60 HDEC
TGSSADR J175801.7-313343 17 58 01.70 -31 33 43.92 11.65 GMRTAS150M
24 NVSS J175801-313346 17 58 01.70 -31 33 46.08 11.67 NVSS
25 HD 163556 17 58 07.87 -31 32 23.64 11.69 HIC
HIP 87966 17 58 07.87 -31 32 23.64 11.69 HIPPARCOS
26 LDN 1783 17 58 14.66 -31 30 14.76 11.78 LDN
27 NVSS J175754-311501 17 57 54.79 -31 15 02.16 11.94 NVSS
TGSSADR J175754.8-311500 17 57 54.91 -31 15 01.08 11.96 GMRTAS150M
MGPS J175754-311459 17 57 54.70 -31 15 00.00 11.96 MGPS2
28 HD 318722 17 58 11.23 -31 32 04.20 12.07 HDEC
29 WDS J17568-3135 17 56 48.00 -31 34 59.88 12.63 WDS
30 W27 17 57 56.90 -31 36 15.84 13.06 DIXON
31 NVSS J175641-311553 17 56 41.40 -31 15 52.92 13.11 NVSS
32 HD 318609 17 56 39.46 -31 34 10.56 13.27 HDEC
33 NVSS J175656-311315 17 56 56.21 -31 13 14.88 13.35 NVSS
34 HD 318708 17 58 01.58 -31 14 14.64 13.40 HDEC
35 V5619 Sgr 17 58 14.62 -31 33 24.48 13.45 GCVS
36 WDS J17566-3136 17 56 36.00 -31 36 00.00 15.07 WDS

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