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 J1813.5+2819

Field

Detected Excesses

Swift-XRT image of the field for 4FGL J1813.5+2819 Swift-XRT detections in the field for 4FGL J1813.5+2819


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 18 14 07.70 +28 12 57.51 6.65 (2.6 ± 1.1) x 10-3 12 2.517 2.325

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1813.5+2819 Swift-XRT image with known radio, optical and UV sources for 4FGL J1813.5+2819

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1RXS J181359.1+282819 18 13 59.11 +28 28 18.84 10.32 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J181341+282009 18 13 41.81 +28 20 08.88 1.78 NVSS
2 NVSS J181310+282137 18 13 10.70 +28 21 37.08 5.54 NVSS
TGSSADR J181404.3+281647 18 14 04.39 +28 16 48.00 7.21 GMRTAS150M
3 NVSS J181404+281644 18 14 04.51 +28 16 44.04 7.26 NVSS
VLSSr J181405.4+281643 18 14 05.40 +28 16 44.04 7.46 VLSSR
4 NVSS J181309+281412 18 13 09.70 +28 14 12.12 7.60 NVSS
QORG J181309.5+281412 18 13 09.50 +28 14 12.12 7.64 QORGCAT
5 HD 167216 18 13 02.42 +28 14 48.48 8.45 HIC
BD+28 2956 18 13 02.40 +28 14 48.84 8.46 ACRS
SAO 85834 18 13 02.38 +28 14 47.40 8.47 SAO
PPM 106923 18 13 02.33 +28 14 48.12 8.48 PPM
HIP 89275 18 13 02.30 +28 14 47.04 8.49 HIPPARCOS
6 SAO 85832 18 12 59.47 +28 15 27.72 8.67 SAO
BD+28 2955 18 12 59.42 +28 15 28.08 8.67 ACRS
HD 167215 18 12 59.40 +28 15 28.44 8.68 HIC
PPM 106921 18 12 59.42 +28 15 27.72 8.68 PPM
HIP 89270 18 12 59.40 +28 15 26.28 8.69 HIPPARCOS
WDS J18130+2815 18 13 00.00 +28 15 00.00 8.80 WDS
7 UGC 11161 18 13 03.60 +28 25 52.68 9.21 UGC
PGC 61585 18 13 04.01 +28 26 13.92 9.39 PGC2003
8 SAO 85848 18 14 07.70 +28 12 59.04 9.90 SAO
HIP 89362 18 14 07.73 +28 12 59.40 9.91 HIPPARCOS
BD+28 2960 18 14 07.73 +28 12 59.04 9.91 ACRS
PPM 106947 18 14 07.73 +28 12 59.04 9.91 PPM
HD 167472 18 14 07.75 +28 12 59.04 9.91 HIC
9 V574 Her 18 13 35.76 +28 29 52.08 10.30 GCVS
TGSSADR J181341.5+282958 18 13 41.59 +28 29 57.84 10.52 GMRTAS150M
10 NVSS J181341+282958 18 13 41.71 +28 29 58.92 10.53 NVSS
11 PGC 61577 18 12 51.41 +28 12 50.04 11.58 PGC2003
12 PGC 1827453 18 13 53.21 +28 08 25.08 11.93 PGC2003
PGC 1827467 18 13 54.00 +28 08 26.88 11.96 PGC2003
13 MCG+05-43-009 18 12 51.84 +28 11 52.80 12.08 MCG
14 NVSS J181423+281239 18 14 23.30 +28 12 38.88 12.86 NVSS
15 NVSS J181239+281402 18 12 39.70 +28 14 02.04 13.20 NVSS

Penn State University Goddard Space Flight Center Swift