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 J1535.9+3743

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1535.9+3743 Swift-XRT detections in the field for 4FGL J1535.9+3743

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 15 35 31.31 +37 35 23.20 4.41 (7.8 ± 1.0) x 10-3 75 8.198 8.027
2 15 35 50.37 +37 40 51.47 4.81 (3.0 ± 0.7) x 10-3 42 4.956 4.667
3 15 36 28.25 +37 42 14.03 5.08 (2.8 ± 0.6) x 10-3 36 4.680 4.603
4 15 35 41.72 +37 53 04.63 5.17 (2.4 ± 0.6) x 10-3 25 4.179 4.039
5 15 36 23.54 +37 48 38.59 5.40 (1.8 ± 0.5) x 10-3 19 3.488 3.476

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 15 35 17.18 +37 36 58.64 6.52 (1.3 ± 0.5) x 10-3 13 2.682 2.817
2 15 36 02.62 +37 47 32.16 6.52 (1.2 ± 0.4) x 10-3 13 2.500 2.798
3 15 36 12.76 +37 51 07.87 5.76 (1.3 ± 0.5) x 10-3 16 2.865 2.766
4 15 35 44.03 +37 49 25.62 5.31 (1.2 ± 0.4) x 10-3 19 3.099 2.744
5 15 36 17.25 +37 38 37.53 4.30 (1.4 ± 0.5) x 10-3 55 3.821 2.579
6 15 35 36.65 +37 37 20.96 5.64 (9 ± 4) x 10-4 17 2.703 2.291
7 15 36 17.25 +37 38 37.53 4.30 (1.1 ± 0.5) x 10-3 55 2.588 2.077
8 15 36 17.29 +37 38 38.60 4.30 (7 ± 5) x 10-4 57 2.588 1.589

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1535.9+3743 Swift-XRT image with known radio, optical and UV sources for 4FGL J1535.9+3743

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 ROXASDC J153627.9+374207.0 15 36 27.89 +37 42 06.84 6.49 ROSAT
[MML2015] 5BZU J1536+3742 15 36 27.96 +37 42 06.84 6.50
2RXS J153629.6+374211 15 36 29.66 +37 42 11.88 6.82 ROSAT
2RXS J153629.6+374211 15 36 29.66 +37 42 11.88 6.82 ROSAT
1RXS J153629.9+374212 15 36 29.90 +37 42 12.60 6.86 ROSAT
2 [YMV2007] 1191 15 36 18.91 +37 38 09.60 7.03 ROSAT
2RXS J153618.7+373804 15 36 18.74 +37 38 04.56 7.07 ROSAT
2RXS J153618.7+373804 15 36 18.74 +37 38 04.56 7.07 ROSAT
3 ABELL2100 15 36 22.06 +37 38 09.24 7.45
4 1RXS J153615.0+373705 15 36 15.00 +37 37 05.16 7.45 ROSAT
5 SDSS J153531.21+373520.3 15 35 31.20 +37 35 20.40 9.50 ROSAT
2RXS J153531.4+373512 15 35 31.49 +37 35 12.48 9.58 ROSAT
2RXS J153531.4+373512 15 35 31.49 +37 35 12.48 9.58 ROSAT
1RXS J153531.6+373511 15 35 31.61 +37 35 11.40 9.59 ROSAT
1RXS J153531.6+373511 15 35 31.61 +37 35 11.04 9.60 ROSAT
1RXS J153531.6+373511 15 35 31.61 +37 35 11.04 9.60 ROSAT
6 XMMSL2 J153650.4+373446 15 36 49.94 +37 34 48.36 13.79 XMM-NEWTON
XMMSL2 J153650.4+373446 15 36 49.85 +37 34 45.84 13.80 XMM-NEWTON
XMMSL2 J153650.4+373446 15 36 50.16 +37 34 47.64 13.83 XMM-NEWTON
G 179-40 15 36 50.35 +37 34 49.44 13.84 ROSAT
XMMSL2 J153650.4+373446 15 36 50.52 +37 34 45.84 13.91 XMM-NEWTON
XMMSL2 J153650.4+373446 15 36 50.52 +37 34 45.84 13.91 XMM-NEWTON
1RXS J153651.3+373446 15 36 51.31 +37 34 45.84 14.03 ROSAT
1RXS J153651.3+373446 15 36 51.31 +37 34 45.84 14.03 ROSAT
1RXS J153651.3+373446 15 36 51.31 +37 34 45.84 14.03 ROSAT
2RXS J153651.2+373443 15 36 51.24 +37 34 43.32 14.04 ROSAT
2RXS J153651.2+373443 15 36 51.24 +37 34 43.32 14.04 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 TXS 1533+379 15 35 51.70 +37 45 24.84 2.08 TEXAS
TGSSADR J153550.3+374056 15 35 50.40 +37 40 57.00 2.77 GMRTAS150M
2 NVSS J153550+374055 15 35 50.59 +37 40 55.92 2.77 NVSS
FIRST J153550.5+374055 15 35 50.50 +37 40 54.84 2.77 FIRST
QORG J153550.4+374055 15 35 50.40 +37 40 54.84 2.79 QORGCAT
7C 153403.5+375612 15 35 55.39 +37 46 18.84 2.83 UC7C151MHZ
FIRST J153555.4+374620 15 35 55.39 +37 46 21.00 2.86 FIRST
GB6 J1535+3740 15 35 49.51 +37 40 54.84 2.87 GB6
WN 1534.0+3756 15 35 55.10 +37 46 23.16 2.89 WENSS
WN 1533.9+3750 15 35 50.59 +37 40 46.92 2.90 WENSS
VLSSr J153554.3+374622 15 35 54.41 +37 46 23.16 2.90 VLSSR
TGSSADR J153555.2+374624 15 35 55.20 +37 46 23.88 2.91 GMRTAS150M
3 NVSS J153555+374624 15 35 55.20 +37 46 24.96 2.92 NVSS
FIRST J153554.6+374628 15 35 54.70 +37 46 27.84 2.98 FIRST
4 Q 1533+3756 15 35 48.41 +37 46 59.88 3.80 VERONCAT
QORG J153548.2+374659 15 35 48.19 +37 46 59.16 3.80 QORGCAT
PGC 3096437 15 35 48.31 +37 46 59.88 3.81 PGC2003
5 FIRST J153604.8+374727 15 36 04.90 +37 47 26.88 4.35 FIRST
6 PGC 2106080 15 35 52.20 +37 39 11.16 4.37 PGC2003
7 FIRST J153607.1+373805 15 36 07.10 +37 38 06.00 5.84 FIRST
8 ZW 1534+3749 15 36 15.84 +37 39 07.20 5.90 ZWCLUSTERS
TGSSADR J153611.4+373805 15 36 11.40 +37 38 06.00 6.22 GMRTAS150M
FIRST J153611.3+373804 15 36 11.30 +37 38 04.92 6.23 FIRST
9 NVSS J153612+373805 15 36 12.10 +37 38 04.92 6.30 NVSS
10 PGC 2106608 15 35 27.70 +37 40 32.16 6.30 PGC2003
11 FIRST J153539.3+373806 15 35 39.31 +37 38 06.00 6.30 FIRST
GB6 J1536+3741 15 36 26.81 +37 41 57.12 6.32 GB6
WN 1534.4+3748A 15 36 12.10 +37 38 03.12 6.33 WENSS
VLSSr J153613.7+373814 15 36 13.70 +37 38 13.92 6.34 VLSSR
VLSSr J153627.7+374210 15 36 27.70 +37 42 10.08 6.45 VLSSR
12 1534+3751 15 36 27.10 +37 41 36.96 6.46 NORTH6CM
1534+3751 15 36 27.10 +37 41 36.96 6.46 NORTH20CM
WN 1534.4+3748 15 36 16.90 +37 38 33.00 6.47 WENSS
WN 1534.5+3751 15 36 27.79 +37 42 06.84 6.48 WENSS
TXS 1534+378 15 36 27.79 +37 42 05.04 6.48 TEXAS
13 NVSS J153624+374648 15 36 24.00 +37 46 49.08 6.49 NVSS
ROXASDC J153627.9+374207.0 15 36 27.89 +37 42 06.84 6.49 ROXA
QORG J153627.9+374206 15 36 27.89 +37 42 06.12 6.50 QORGCAT
[MML2015] 5BZU J1536+3742 15 36 27.89 +37 42 06.84 6.50 ROMABZCAT
14 NVSS J153627+374207 15 36 28.01 +37 42 06.84 6.50 NVSS
FIRST J153627.9+374206 15 36 28.01 +37 42 06.84 6.50 FIRST
TGSSADR J153628.0+374207 15 36 28.10 +37 42 06.84 6.52 GMRTAS150M
FIRST J153623.9+374656 15 36 23.90 +37 46 57.00 6.54 FIRST
WN 1534.4+3748B 15 36 18.50 +37 38 43.08 6.55 WENSS
TGSSADR J153618.6+373843 15 36 18.60 +37 38 44.16 6.56 GMRTAS150M
7C 153426.1+374829 15 36 18.10 +37 38 38.04 6.57 UC7C151MHZ
7C 153436.3+375153 15 36 28.20 +37 42 02.16 6.57 UC7C151MHZ
QORG J153615.2+373809 15 36 15.19 +37 38 08.88 6.58 QORGCAT
15 TGSSADR J153615.3+373809 15 36 15.41 +37 38 09.96 6.59 GMRTAS150M
PGC 2105625 15 36 15.31 +37 38 08.88 6.59 PGC2003
16 NVSS J153618+373839 15 36 18.60 +37 38 39.12 6.61 NVSS
FIRST J153618.5+373839 15 36 18.60 +37 38 39.12 6.61 FIRST
QORG J153618.4+373837 15 36 18.41 +37 38 36.96 6.61 QORGCAT
PGC 2105831 15 36 18.50 +37 38 38.04 6.62 PGC2003
FIRST J153615.3+373806 15 36 15.41 +37 38 07.08 6.63 FIRST
MCG+06-34-019 15 36 16.08 +37 38 09.60 6.67 MCG
1534+3748 15 36 16.06 +37 38 08.88 6.68 ZCAT
PGC 55572 15 36 20.50 +37 38 54.96 6.69 PGC2003
17 ZW 1534+3753 15 36 33.84 +37 43 08.40 7.53 ZWCLUSTERS
18 QORG J153616.0+373657 15 36 16.01 +37 36 56.88 7.67 QORGCAT
19 ABELL2100 15 36 23.78 +37 38 00.96 7.79 ABELL
20 SDSS J15362+3751 15 36 12.60 +37 51 06.12 8.30 VERONCAT
21 SDSS J15363+3736 15 36 23.30 +37 36 45.00 8.66 VERONCAT
22 PGC 55596 15 36 40.30 +37 42 37.08 8.84 PGC2003
FIRST J153603.9+373446 15 36 03.91 +37 34 45.84 8.87 FIRST
23 NVSS J153603+373445 15 36 03.79 +37 34 45.12 8.88 NVSS
24 MCG+06-34-021 15 36 39.84 +37 41 09.60 9.01 MCG
1534+3751 15 36 39.94 +37 41 09.96 9.03 ZCAT
25 [ZEH2003] RX J1535.5+3735 2 15 35 35.11 +37 35 20.04 9.13 HRASSOPTID
26 SDSS J15355+3735 15 35 31.20 +37 35 20.04 9.51 VERONCAT
[ZEH2003] RX J1535.5+3735 1 15 35 31.10 +37 35 20.04 9.52 HRASSOPTID
QORG J153531.1+373520 15 35 31.10 +37 35 20.04 9.52 QORGCAT
27 FIRST J153516.6+373729 15 35 16.70 +37 37 30.00 9.80 FIRST
28 SDSS J15356+3753 15 35 41.50 +37 52 59.88 9.92 VERONCAT
29 FIRST J153600.9+373332 15 36 00.91 +37 33 33.12 10.00 FIRST
30 PGC 2104911 15 36 32.81 +37 36 28.08 10.15 PGC2003
31 PGC 2111752 15 36 22.39 +37 52 21.00 10.30 PGC2003
32 PGC 2105817 15 36 41.59 +37 38 35.16 10.30 PGC2003
33 PGC 2110053 15 36 42.60 +37 48 25.92 10.48 PGC2003
34 PGC 55574 15 36 17.21 +37 33 47.88 10.58 PGC2003
35 FIRST J153629.1+375203 15 36 29.11 +37 52 03.00 10.80 FIRST
36 FIRST J153636.5+375122 15 36 36.50 +37 51 23.04 11.26 FIRST
37 PGC 2105177 15 36 45.50 +37 37 06.96 11.72 PGC2003
38 NVSS J153650+373848 15 36 50.59 +37 38 48.12 11.80 NVSS
TGSSADR J153507.3+373635 15 35 07.30 +37 36 34.92 11.83 GMRTAS150M
39 NVSS J153507+373638 15 35 07.01 +37 36 38.16 11.84 NVSS
FIRST J153507.1+373634 15 35 07.10 +37 36 34.92 11.86 FIRST
QORG J153506.4+373646 15 35 06.41 +37 36 46.08 11.87 QORGCAT
WN 1533.2+3746 15 35 07.01 +37 36 28.08 11.94 WENSS
SDSS J15367+3737 15 36 47.50 +37 37 12.00 12.01 VERONCAT
QORG J153651.4+373840 15 36 51.41 +37 38 39.84 12.01 QORGCAT
40 MCG+06-34-020 15 36 16.08 +37 32 09.60 12.02 MCG
FIRST J153651.5+373839 15 36 51.50 +37 38 39.84 12.03 FIRST
1534+3742 15 36 16.20 +37 32 08.88 12.05 ZCAT
41 FIRST J153522.6+373317 15 35 22.70 +37 33 16.92 12.13 FIRST
42 NVSS J153459+375013 15 34 59.30 +37 50 12.84 13.03 NVSS
FIRST J153459.2+375013 15 34 59.30 +37 50 12.84 13.04 FIRST
43 SDSS J15366+3733 15 36 40.10 +37 33 25.92 13.34 VERONCAT
44 WDS J15368+3735 15 36 48.00 +37 34 59.88 13.37 WDS
BK CrB 15 36 50.35 +37 34 49.44 13.84 GCVS
G 179-40 15 36 50.35 +37 34 49.44 13.84 HIC
45 [ZEH2003] RX J1536.8+3734 1 15 36 50.59 +37 34 50.88 13.87 HRASSOPTID
HIP 76452 15 36 50.54 +37 34 50.16 13.87 HIPPARCOS
273- 43 15 36 50.98 +37 34 52.68 13.91 NLTT
46 PGC 2112670 15 35 10.90 +37 54 24.12 14.06 PGC2003
273- 44 15 36 51.98 +37 34 52.68 14.06 NLTT
47 [ZEH2003] RX J1536.8+3734 2 15 36 53.40 +37 34 49.08 14.32 HRASSOPTID
48 SDSS J15368+3732 15 36 52.39 +37 32 17.16 15.85 VERONCAT

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