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.

3FGL J2048.8+4436

Field

Detected Excesses
Swift-XRT image of the field for 3FGL J2048.8+4436 Swift-XRT detections in the field for 3FGL J2048.8+4436


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 48 29.79 +44 41 36.76 6.93 (1.1 ± 0.4) x 10-2 13 2.731 2.923

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 3FGL J2048.8+4436 Swift-XRT image with known radio, optical and UV sources for 3FGL J2048.8+4436

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1RXS J204907.7+442752 20 49 07.70 +44 27 51.84 8.98 ROSAT
2 4XMM J204944.0+444319 20 49 44.02 +44 43 19.92 11.26 XMM-NEWTON
3 XMMU J204939.4+444626 20 49 39.41 +44 46 26.40 12.84 XMM-NEWTON
4XMM J204939.5+444626 20 49 39.55 +44 46 26.76 12.86 XMM-NEWTON
4 4XMM J204957.6+444807 20 49 57.62 +44 48 07.56 16.26 XMM-NEWTON

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J204841+443953 20 48 41.71 +44 39 52.92 4.01 NVSS
WSRTGP 2046+4428 20 48 41.71 +44 39 57.96 4.08 WSRTGP
2 NVSS J204838+443303 20 48 38.30 +44 33 03.96 4.39 NVSS
3 NVSS J204916+443003 20 49 16.39 +44 30 02.88 7.60 NVSS
CGPS J204853+444430 20 48 53.71 +44 44 30.12 8.01 CGPSNGPCAT
4 NVSS J204853+444433 20 48 53.30 +44 44 33.00 8.06 NVSS
NVSS J204918+442946 20 49 18.70 +44 29 47.04 8.06 NVSS
5 NVSS J204920+442935 20 49 20.71 +44 29 35.16 8.42 NVSS
6 NK2.37 20 49 36.31 +44 30 42.84 9.53 DIXON
7 NVSS J204941+443158 20 49 41.50 +44 31 59.16 9.63 NVSS
CGPS J204941+443152 20 49 41.30 +44 31 51.96 9.66 CGPSNGPCAT
WSRTGP 2047+4420 20 49 40.90 +44 31 41.88 9.67 WSRTGP
WSRTGP 2048+4426 20 49 48.10 +44 37 41.16 9.75 WSRTGP
8 SAO 50075 20 47 58.78 +44 35 59.28 9.79 SAO
PPM 60486 20 47 58.73 +44 36 00.00 9.80 PPM
BD+44 3584 20 47 58.68 +44 36 00.00 9.81 ACRS
9 NVSS J204948+443733 20 49 48.79 +44 37 32.88 9.85 NVSS
NVSS J204950+443726 20 49 50.21 +44 37 27.12 10.10 NVSS
10 NVSS J204921+442716 20 49 21.10 +44 27 15.84 10.43 NVSS
11 WN 2047.9+4418A 20 49 43.70 +44 31 04.08 10.44 WENSS
WSRTGP 2047+4419 20 49 44.90 +44 30 42.84 10.80 WSRTGP
CGPS J204945+443040 20 49 45.29 +44 30 41.04 10.87 CGPSNGPCAT
12 SAO 50077 20 48 00.70 +44 41 54.60 10.87 SAO
TGSSADR J204945.2+443038 20 49 45.19 +44 30 38.88 10.88 GMRTAS150M
13 NVSS J204945+443041 20 49 45.50 +44 30 41.04 10.89 NVSS
PPM 60488 20 48 00.74 +44 41 58.92 10.90 PPM
BD+44 3586 20 48 00.74 +44 41 58.92 10.90 ACRS
14 WN 2047.9+4418 20 49 43.70 +44 30 11.16 10.92 WENSS
15 NVSS J204942+442845 20 49 42.60 +44 28 45.84 11.65 NVSS
WSRTGP 2047+4417 20 49 42.70 +44 28 37.92 11.75 WSRTGP
CGPS J204943+442828 20 49 43.10 +44 28 28.92 11.91 CGPSNGPCAT
WN 2047.9+4418B 20 49 44.11 +44 28 32.16 11.99 WENSS
16 NSV 13318 20 48 03.41 +44 45 42.12 12.84 GCVSNSVARS
17 NVSS J204754+442843 20 47 54.60 +44 28 44.04 13.08 NVSS
18 SAO 50069 20 47 49.97 +44 45 59.04 14.78 SAO
PPM 60479 20 47 50.04 +44 46 01.20 14.79 PPM
SAO 50069 20 47 50.02 +44 46 01.20 14.80 HIC
BD+44 3582 20 47 50.02 +44 46 00.84 14.80 ACRS
HIP 102637 20 47 49.99 +44 46 00.84 14.80 HIPPARCOS
19 PPM 60481 20 47 51.46 +44 47 30.84 15.62 PPM
BD+44 3583 20 47 51.38 +44 47 30.84 15.63 ACRS
20 BD+44 3583 20 47 53.06 +44 47 56.40 15.72 ACRS
PPM 60482 20 47 52.99 +44 47 56.76 15.74 PPM
CGPS J204957+444805 20 49 57.91 +44 48 05.04 16.26 CGPSNGPCAT
21 NVSS J204958+444805 20 49 58.10 +44 48 06.12 16.29 NVSS

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