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 J1835.3-2439

Field

Detected Excesses

Swift-XRT image of the field for 4FGL J1835.3-2439 Swift-XRT detections in the field for 4FGL J1835.3-2439

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 18 35 14.27 -24 43 39.44 6.41 (5 ± 2) x 10-3 16 3.174 3.044

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1835.3-2439 Swift-XRT image with known radio, optical and UV sources for 4FGL J1835.3-2439

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1WGA J1834.8-2430 18 34 50.69 -24 30 15.48 11.75 ROSAT
2 XMMSL2 J183444.7-243049 18 34 44.93 -24 30 48.60 12.19 XMM-NEWTON

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 PGC 207090 18 35 24.70 -24 38 44.88 0.98 PGC2003
2 V4189 Sgr 18 35 03.98 -24 40 12.36 4.20 GCVS
3 WDS J18350-2441 18 35 00.00 -24 40 59.88 5.26 WDS
SAO 187004 18 34 58.75 -24 41 10.32 5.58 SAO
PPM 268610 18 34 58.75 -24 41 13.20 5.59 PPM
CD-2414482 18 34 58.75 -24 41 13.56 5.59 ACRS
4 NVSS J183555-244225 18 35 55.30 -24 42 25.92 8.04 NVSS
5 PGC 207160 18 35 54.50 -24 43 10.92 8.17 PGC2003
6 CGMW 4-1662 18 35 23.11 -24 31 12.00 8.36 CGMW
7 NVSS J183446-243542 18 34 46.61 -24 35 43.08 8.97 NVSS
8 NSV 11058 18 35 45.89 -24 30 12.96 10.78 GCVSNSVARS
9 NVSS J183456-244900 18 34 56.59 -24 49 00.84 11.11 NVSS
10 CGMW 4-1570 18 34 35.30 -24 35 54.96 11.27 CGMW
11 NVSS J183607-244438 18 36 07.61 -24 44 38.04 11.48 NVSS
12 NVSS J183504-242813 18 35 04.90 -24 28 13.08 12.00 NVSS
13 PPM 268631 18 35 55.68 -24 29 10.68 12.87 PPM
SAO 187026 18 35 55.75 -24 29 09.96 12.89 SAO
14 PGC 207011 18 34 41.11 -24 27 52.92 14.96 PGC2003
15 NVSS J183429-242813 18 34 29.90 -24 28 13.08 16.44 NVSS

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