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 J1927.5+0154

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1927.5+0154 Swift-XRT detections in the field for 4FGL J1927.5+0154

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 19 27 31.22 +01 53 56.27 4.34 (2.6 ± 0.3) x 10-2 88 8.675 8.509
2 19 27 17.87 +01 59 03.07 4.61 (1.5 ± 0.2) x 10-2 53 6.636 6.438
3 19 27 39.33 +02 00 11.84 5.02 (1.1 ± 0.2) x 10-2 40 5.022 5.579

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 19 27 24.60 +01 55 49.25 5.70 (2.7 ± 1.2) x 10-3 18 2.464 2.316

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1927.5+0154 Swift-XRT image with known radio, optical and UV sources for 4FGL J1927.5+0154

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 XMMSL2 J192731.3+015402 19 27 31.46 +01 54 02.52 0.31 XMM-NEWTON
2 2RXS J192734.0+015632 19 27 34.03 +01 56 32.64 2.62 ROSAT
3 XMMSL2 J192717.6+015910 19 27 17.76 +01 59 05.64 5.89 XMM-NEWTON
XMMSL2 J192717.6+015910 19 27 17.59 +01 59 10.32 5.98 XMM-NEWTON
4 1RXS J192644.4+015613 19 26 44.40 +01 56 12.84 11.65 ROSAT
5 XMMSL2 J192703.2+020442 19 27 03.14 +02 04 41.52 12.57 XMM-NEWTON

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J192729+015353 19 27 29.21 +01 53 53.16 0.33 NVSS
TGSSADR J192729.0+015351 19 27 28.99 +01 53 52.08 0.39 GMRTAS150M
2 NVSS J192732+015734 19 27 32.81 +01 57 33.84 3.53 NVSS
3 NVSS J192703+015551 19 27 03.29 +01 55 50.88 6.96 NVSS
4 NVSS J192804+015439 19 28 04.10 +01 54 38.88 8.47 NVSS
5 NVSS J192748+014648 19 27 48.91 +01 46 48.00 8.66 NVSS
6 WDS J19276+0203 19 27 36.00 +02 02 60.00 9.01 WDS
TU Aql 19 27 36.36 +02 03 10.80 9.21 GCVS
BD+01 4003 19 27 36.24 +02 03 19.80 9.35 ACRS
TU Aql 19 27 36.31 +02 03 20.52 9.36 HIC
PPM 167889 19 27 36.31 +02 03 20.52 9.36 PPM
HIP 95672 19 27 36.31 +02 03 20.88 9.37 HIPPARCOS
7 NVSS J192700+020033 19 27 01.01 +02 00 33.84 9.76 NVSS
TGSSADR J192700.9+020034 19 27 00.91 +02 00 33.84 9.77 GMRTAS150M
8 PPM 167869 19 26 55.18 +01 46 10.56 11.82 PPM
BD+01 3997 19 26 55.15 +01 46 10.20 11.82 ACRS
9 NVSS J192812+020007 19 28 13.01 +02 00 06.84 12.26 NVSS
10 NVSS J192811+014710 19 28 11.21 +01 47 09.96 12.35 NVSS
QORG J192811.2+014710 19 28 11.21 +01 47 09.96 12.36 QORGCAT
TGSSADR J192814.1+014818 19 28 14.21 +01 48 19.08 12.41 GMRTAS150M
11 PGC 3099100 19 26 48.79 +02 01 00.12 12.44 PGC2003
12 NVSS J192814+014820 19 28 14.50 +01 48 20.88 12.47 NVSS
13 V853 Aql 19 28 07.63 +01 44 36.60 13.32 GCVS

Penn State University Goddard Space Flight Center Swift