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 J0442.8+3609

Field

Detected Excesses

Swift-XRT image of the field for 4FGL J0442.8+3609 Swift-XRT detections in the field for 4FGL J0442.8+3609


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 04 42 30.88 +36 06 12.05 6.78 (2.6 ± 0.9) x 10-3 13 2.778 2.786

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 4FGL J0442.8+3609 Swift-XRT image with known radio, optical and UV sources for 4FGL J0442.8+3609

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 X044247.91+360837.4 04 42 47.90 +36 08 37.32 1.32 CHANDRA
CXOGSG J044247.8+360837 04 42 47.90 +36 08 37.32 1.32 CHANDRA
2CXO J044247.8+360837 04 42 47.88 +36 08 37.32 1.32 CHANDRA
2 X044243.76+361008.9 04 42 43.75 +36 10 08.76 1.39 CHANDRA
2CXO J044243.7+361008 04 42 43.75 +36 10 08.76 1.39 CHANDRA
CXOGSG J044243.7+361008 04 42 43.75 +36 10 08.76 1.39 CHANDRA
3 X044253.39+360720.6 04 42 53.40 +36 07 20.64 2.57 CHANDRA
2CXO J044253.3+360720 04 42 53.38 +36 07 20.64 2.57 CHANDRA
CXOGSG J044253.3+360720 04 42 53.38 +36 07 20.64 2.57 CHANDRA
4 2CXO J044303.1+360858 04 43 03.12 +36 08 58.20 2.70 CHANDRA
X044303.13+360858.1 04 43 03.12 +36 08 58.20 2.70 CHANDRA
5 CXOGSG J044257.4+361228 04 42 57.43 +36 12 28.80 2.99 CHANDRA
X044257.68+361227.6 04 42 57.67 +36 12 27.72 3.00 CHANDRA
2CXO J044257.4+361229 04 42 57.48 +36 12 29.16 3.00 CHANDRA
6 X044249.39+360650.4 04 42 49.39 +36 06 50.40 3.01 CHANDRA
7 X044243.92+360640.8 04 42 43.92 +36 06 40.68 3.43 CHANDRA
CXOGSG J044243.9+360640 04 42 43.92 +36 06 40.68 3.43 CHANDRA
2CXO J044243.9+360640 04 42 43.92 +36 06 40.68 3.43 CHANDRA
8 X044307.19+360901.8 04 43 07.20 +36 09 01.80 3.47 CHANDRA
CXOGSG J044307.1+360901 04 43 07.20 +36 09 01.44 3.47 CHANDRA
2CXO J044307.1+360901 04 43 07.20 +36 09 01.44 3.47 CHANDRA
9 CXOGSG J044250.7+360613 04 42 50.71 +36 06 13.68 3.61 CHANDRA
X044250.71+360613.7 04 42 50.71 +36 06 13.68 3.61 CHANDRA
2CXO J044250.7+360613 04 42 50.71 +36 06 13.68 3.61 CHANDRA
10 X044240.25+360632.7 04 42 40.25 +36 06 32.76 3.89 CHANDRA
CXOGSG J044309.2+360856 04 43 09.22 +36 08 56.76 3.89 CHANDRA
X044309.22+360856.9 04 43 09.22 +36 08 56.76 3.89 CHANDRA
CXOGSG J044240.2+360632 04 42 40.22 +36 06 32.76 3.89 CHANDRA
2CXO J044240.2+360632 04 42 40.25 +36 06 32.76 3.89 CHANDRA
2CXO J044309.2+360856 04 43 09.24 +36 08 56.76 3.89 CHANDRA
11 2CXO J044310.1+361104 04 43 10.10 +36 11 04.92 4.15 CHANDRA
12 X044255.34+360548.0 04 42 55.34 +36 05 48.12 4.16 CHANDRA
CXOGSG J044255.3+360547 04 42 55.32 +36 05 47.76 4.16 CHANDRA
2CXO J044255.3+360547 04 42 55.34 +36 05 47.76 4.16 CHANDRA
13 2CXO J044302.0+360620 04 43 02.04 +36 06 20.88 4.20 CHANDRA
14 X044248.85+360536.9 04 42 48.84 +36 05 36.96 4.24 CHANDRA
2CXO J044248.8+360536 04 42 48.86 +36 05 36.96 4.24 CHANDRA
CXOGSG J044248.8+360536 04 42 48.86 +36 05 36.96 4.24 CHANDRA
CXOGSG J044257.4+360545 04 42 57.43 +36 05 45.96 4.31 CHANDRA
X044257.44+360545.8 04 42 57.43 +36 05 45.96 4.31 CHANDRA
2CXO J044257.4+360545 04 42 57.43 +36 05 45.60 4.31 CHANDRA
15 CXOGSG J044312.5+360946 04 43 12.55 +36 09 46.80 4.46 CHANDRA
2CXO J044312.5+360948 04 43 12.58 +36 09 48.24 4.46 CHANDRA
X044312.59+360947.2 04 43 12.60 +36 09 47.16 4.46 CHANDRA
16 2CXO J044308.1+361310 04 43 08.16 +36 13 09.84 4.88 CHANDRA
17 X044300.96+360508.8 04 43 00.96 +36 05 08.88 5.15 CHANDRA
2CXO J044300.9+360508 04 43 00.96 +36 05 08.88 5.15 CHANDRA
CXOGSG J044300.9+360508 04 43 00.96 +36 05 08.52 5.15 CHANDRA
18 X044230.99+360612.5 04 42 30.98 +36 06 12.60 5.35 CHANDRA
CXOGSG J044230.9+360612 04 42 30.98 +36 06 12.60 5.35 CHANDRA
19 2CXO J044309.6+361357 04 43 09.60 +36 13 57.72 5.65 CHANDRA
20 X044309.58+360519.8 04 43 09.58 +36 05 19.68 5.94 CHANDRA
2CXO J044309.5+360519 04 43 09.60 +36 05 20.04 5.94 CHANDRA
CXOGSG J044309.5+360519 04 43 09.60 +36 05 20.04 5.94 CHANDRA
2CXO J044311.1+360536 04 43 11.16 +36 05 36.60 5.95 CHANDRA
CXOGSG J044311.1+360535 04 43 11.18 +36 05 35.16 5.97 CHANDRA
X044311.19+360535.1 04 43 11.18 +36 05 35.16 5.97 CHANDRA
21 2CXO J044313.3+361346 04 43 13.34 +36 13 46.20 6.06 CHANDRA
22 X044306.61+360438.9 04 43 06.60 +36 04 39.00 6.13 CHANDRA
2CXO J044306.6+360437 04 43 06.62 +36 04 37.56 6.15 CHANDRA
CXOGSG J044306.0+360428 04 43 06.00 +36 04 28.56 6.21 CHANDRA
2CXO J044306.0+360428 04 43 06.07 +36 04 28.56 6.22 CHANDRA
X044306.06+360428.4 04 43 06.07 +36 04 28.56 6.22 CHANDRA
23 2CXO J044219.1+360909 04 42 19.15 +36 09 09.36 6.36 CHANDRA
24 X044236.58+360407.5 04 42 36.58 +36 04 07.68 6.37 CHANDRA
2CXO J044219.0+360919 04 42 19.01 +36 09 19.44 6.37 CHANDRA
X044218.99+360919.5 04 42 18.98 +36 09 19.44 6.38 CHANDRA
2CXO J044236.5+360407 04 42 36.50 +36 04 07.32 6.38 CHANDRA
CXOGSG J044236.4+360407 04 42 36.48 +36 04 07.32 6.38 CHANDRA
25 X044228.73+361450.2 04 42 28.73 +36 14 50.28 6.65 CHANDRA
26 X044217.92+360817.2 04 42 17.93 +36 08 17.16 6.75 CHANDRA
27 2CXO J044219.4+361235 04 42 19.42 +36 12 35.28 6.84 CHANDRA
X044219.48+361237.3 04 42 19.49 +36 12 37.44 6.84 CHANDRA
28 2CXO J044241.3+360305 04 42 41.40 +36 03 05.40 6.99 CHANDRA
29 X044215.23+360909.9 04 42 15.24 +36 09 10.08 7.15 CHANDRA
30 2CXO J044231.5+360342 04 42 31.51 +36 03 42.48 7.23 CHANDRA
31 X044211.18+360635.0 04 42 11.18 +36 06 34.92 8.58 CHANDRA
2CXO J044211.1+360634 04 42 11.18 +36 06 33.84 8.58 CHANDRA
32 2CXO J044207.3+361016 04 42 07.39 +36 10 16.68 8.71 CHANDRA
33 X044246.96+360102.8 04 42 46.97 +36 01 02.64 8.82 CHANDRA
CXOGSG J044246.9+360102 04 42 46.92 +36 01 02.64 8.83 CHANDRA
2CXO J044246.9+360102 04 42 46.92 +36 01 02.28 8.83 CHANDRA
34 2CXO J044204.6+361209 04 42 04.66 +36 12 09.72 9.53 CHANDRA
X044204.37+361209.5 04 42 04.37 +36 12 09.36 9.59 CHANDRA
35 2CXO J044327.5+361611 04 43 27.58 +36 16 11.64 9.82 CHANDRA
36 2CXO J044329.7+361639 04 43 29.71 +36 16 39.72 10.45 CHANDRA
37 2CXO J044206.5+361532 04 42 06.58 +36 15 32.04 10.53 CHANDRA
38 X044156.12+361135.0 04 41 56.11 +36 11 35.16 11.11 CHANDRA
2CXO J044156.0+361135 04 41 56.06 +36 11 35.16 11.12 CHANDRA
39 X044203.24+360358.5 04 42 03.24 +36 03 58.68 11.20 CHANDRA
40 X044158.71+360513.1 04 41 58.70 +36 05 13.20 11.43 CHANDRA
2CXO J044158.6+360514 04 41 58.63 +36 05 15.00 11.43 CHANDRA
41 2CXO J044254.7+355822 04 42 54.72 +35 58 22.44 11.50 CHANDRA
42 2CXO J044154.8+360520 04 41 54.89 +36 05 20.76 12.09 CHANDRA
43 2CXO J044201.3+360228 04 42 01.32 +36 02 28.68 12.36 CHANDRA
X044201.35+360227.8 04 42 01.34 +36 02 27.96 12.37 CHANDRA
44 X044201.18+360155.4 04 42 01.18 +36 01 55.56 12.72 CHANDRA
2CXO J044201.1+360155 04 42 01.10 +36 01 55.20 12.73 CHANDRA

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J044248+360816 04 42 48.60 +36 08 17.16 1.61 NVSS
2 SAO 57386 04 42 56.23 +36 08 15.36 1.96 SAO
BD+35 899 04 42 56.18 +36 08 15.00 1.97 ACRS
PPM 69599 04 42 56.14 +36 08 14.28 1.97 PPM
HD 280119 04 42 56.14 +36 08 14.28 1.97 HDEC
V353 Aur 04 42 53.59 +36 06 53.64 3.01 GCVS
CRL 618 04 42 53.35 +36 06 52.56 3.02 PLNEBULAE
3 NVSS J044253+360651 04 42 53.90 +36 06 51.84 3.06 NVSS
4 PCCS2 070 G166.46-06.53 04 42 56.11 +36 06 15.84 3.74 PCCS070GHZ
5 PCCS2 030 G166.49-06.54 04 42 59.81 +36 04 28.92 5.68 PCCS030GHZ
6 PCCS2 044 G166.46-06.58 04 42 42.91 +36 04 18.12 5.74 PCCS044GHZ
7 NVSS J044225+360458 04 42 25.30 +36 04 58.08 7.04 NVSS
QORG J044225.1+360456 04 42 25.10 +36 04 55.92 7.09 QORGCAT
8 NVSS J044321+361305 04 43 21.79 +36 13 05.16 7.10 NVSS
9 MITG J0443+3613 04 43 25.01 +36 13 14.16 7.75 MITGB6CM
VLSSr J044328.8+361334 04 43 28.80 +36 13 33.96 8.59 VLSSR
0440+3608 04 43 28.20 +36 13 50.88 8.61 NORTH6CM
10 NVSS J044234+361751 04 42 34.80 +36 17 52.08 8.63 NVSS
GB6 J0443+3613 04 43 28.61 +36 13 45.12 8.63 GB6
TXS 0440+361 04 43 29.11 +36 13 39.00 8.69 TEXAS
TGSSADR J044329.1+361340 04 43 29.21 +36 13 41.16 8.70 GMRTAS150M
WN 0440.1+3608 04 43 29.21 +36 13 41.16 8.71 WENSS
11 NVSS J044329+361340 04 43 29.30 +36 13 41.16 8.72 NVSS
7C 044010.2+360810 04 43 30.00 +36 13 45.12 8.88 GP7C151MHZ
12 HD 29743 04 42 37.63 +36 18 41.40 9.22 HIC
PPM 69597 04 42 37.63 +36 18 41.40 9.22 PPM
SAO 57384 04 42 37.75 +36 18 42.12 9.23 SAO
HIP 21907 04 42 37.61 +36 18 41.76 9.23 HIPPARCOS
BD+36 926 04 42 37.58 +36 18 41.76 9.23 ACRS
13 OF+367 04 43 31.61 +36 05 35.16 9.33 DIXON
14 NVSS J044344+360908 04 43 44.81 +36 09 07.92 10.98 NVSS
WN 0439.0+3614 04 42 22.51 +36 19 59.16 11.61 WENSS
15 NVSS J044222+362028 04 42 22.30 +36 20 29.04 12.06 NVSS
TGSSADR J044222.3+362031 04 42 22.30 +36 20 30.84 12.09 GMRTAS150M
WN 0438.7+3556 04 42 01.70 +36 02 24.00 12.35 WENSS
TGSSADR J044201.2+360229 04 42 01.30 +36 02 30.12 12.36 GMRTAS150M
16 NVSS J044201+360226 04 42 01.30 +36 02 26.88 12.39 NVSS
17 NVSS J044155+355918 04 41 55.80 +35 59 18.96 15.25 NVSS

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