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 J1648.1-1547

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1648.1-1547 Swift-XRT detections in the field for 4FGL J1648.1-1547

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 16 48 04.20 -15 47 01.80 5.64 (2.7 ± 0.7) x 10-3 25 3.786 3.813
2 16 48 07.46 -15 37 12.39 5.76 (2.0 ± 0.6) x 10-3 19 3.279 3.389
3 16 48 20.61 -15 36 22.32 5.70 (2.6 ± 0.8) x 10-3 17 3.513 3.313

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 16 48 46.05 -15 44 24.19 5.96 (1.4 ± 0.5) x 10-3 15 2.964 2.848

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1648.1-1547 Swift-XRT image with known radio, optical and UV sources for 4FGL J1648.1-1547

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1WGA J1647.9-1543 16 47 54.60 -15 43 51.96 4.70 ROSAT
2 1WGA J1647.5-1543 16 47 31.99 -15 43 15.60 9.38 ROSAT
3 1BMW 164846.0-154413 16 48 45.96 -15 44 12.84 10.06 ROSAT
1WGA J1648.7-1544 16 48 46.51 -15 44 31.92 10.08 ROSAT
2RXP J164846.8-154422 16 48 46.75 -15 44 21.84 10.19 ROSAT
4 1WGA J1648.3-1536 16 48 20.50 -15 36 32.76 11.53 ROSAT
1BMW 164820.3-153621 16 48 20.30 -15 36 20.88 11.71 ROSAT
1BMW 164820.5-153619 16 48 20.47 -15 36 19.08 11.75 ROSAT
2RXP J164820.7-153618 16 48 20.64 -15 36 18.00 11.78 ROSAT
5 2RXS J164821.4-153605 16 48 21.43 -15 36 05.76 12.03 ROSAT
2RXS J164821.4-153605 16 48 21.43 -15 36 05.76 12.03 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
QORG J164804.2-154702 16 48 04.20 -15 47 02.04 0.79 QORGCAT
1 NVSS J164804-154659 16 48 04.30 -15 46 59.16 0.80 NVSS
QORG J164812.8-154335 16 48 12.79 -15 43 35.04 4.27 QORGCAT
2 NVSS J164812-154335 16 48 12.79 -15 43 35.04 4.27 NVSS
TGSSADR J164812.6-154333 16 48 12.70 -15 43 33.96 4.28 GMRTAS150M
WISH B1645.3-1530B 16 48 12.60 -15 43 06.96 4.70 WISH
3 NVSS J164820-154257 16 48 20.50 -15 42 57.96 5.71 NVSS
TGSSADR J164820.5-154254 16 48 20.50 -15 42 55.08 5.74 GMRTAS150M
4 NVSS J164822-155425 16 48 22.80 -15 54 24.84 7.88 NVSS
5 PPM 232167 16 47 39.07 -15 43 02.64 8.02 PPM
BD-15 4391 16 47 39.05 -15 43 02.64 8.03 ACRS
SAO 160098 16 47 39.05 -15 43 01.20 8.04 SAO
6 NN 3973 16 48 45.62 -15 44 12.48 9.98 CNS3
806- 8 16 48 45.53 -15 44 06.36 9.99 NLTT
LP 806-8 16 48 45.79 -15 44 17.16 9.99 PMSUCAT
PPM 232187 16 48 45.96 -15 44 20.40 10.01 PPM
LP 806-8 16 48 46.01 -15 44 20.76 10.03 HIC
HIP 82283 16 48 45.96 -15 44 18.24 10.03 HIPPARCOS
QORG J164846.0-154410 16 48 46.01 -15 44 09.96 10.08 QORGCAT
7 HIP 82233 16 48 01.80 -15 57 49.32 10.31 HIPPARCOS
HD 151450 16 48 01.87 -15 57 50.04 10.32 HIC
PPM 232174 16 48 01.85 -15 57 50.04 10.32 PPM
BD-15 4392 16 48 01.87 -15 57 50.40 10.32 ACRS
SAO 160101 16 48 01.87 -15 57 51.48 10.34 SAO
8 NVSS J164730-154153 16 47 30.60 -15 41 53.16 10.36 NVSS
WDS J16480-1558 16 48 00.00 -15 58 00.12 10.54 WDS
WISH B1644.6-1549 16 47 31.80 -15 54 38.88 10.95 WISH
9 NVSS J164731-155449 16 47 31.90 -15 54 48.96 11.05 NVSS
TGSSADR J164731.7-155447 16 47 31.80 -15 54 47.88 11.05 GMRTAS150M
WISH B1644.6-1549 16 47 31.99 -15 54 52.92 11.07 WISH
10 NVSS J164813-153602 16 48 13.90 -15 36 02.16 11.68 NVSS
11 QORG J164820.6-153619 16 48 20.59 -15 36 19.08 11.76 QORGCAT
TGSSADR J164813.9-153556 16 48 13.99 -15 35 56.04 11.78 GMRTAS150M
WISH B1645.3-1530 16 48 12.60 -15 35 52.08 11.80 WISH
TGSSADR J164752.6-155910 16 47 52.70 -15 59 09.96 12.06 GMRTAS150M
12 NVSS J164752-155911 16 47 52.90 -15 59 11.04 12.07 NVSS
WISH B1645.0-1553 16 47 52.20 -15 59 12.84 12.14 WISH
13 SAO 160096 16 47 25.30 -15 38 10.68 13.68 SAO
BD-15 4390 16 47 25.22 -15 38 09.60 13.70 ACRS
PPM 232159 16 47 25.22 -15 38 09.60 13.70 PPM

Penn State University Goddard Space Flight Center Swift