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 J0436.9+2915

Field

Detected Excesses

Swift-XRT image of the field for 4FGL J0436.9+2915 Swift-XRT detections in the field for 4FGL J0436.9+2915

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 04 37 37.12 +29 23 43.03 5.53 (8 ± 2) x 10-3 22 4.508 4.023
2 04 36 27.82 +29 22 06.38 7.48 (5 ± 2) x 10-3 12 2.952 3.129

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 36 46.32 +29 18 33.83 7.48 (3.9 ± 1.4) x 10-3 10 2.933 2.720

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 4FGL J0436.9+2915 Swift-XRT image with known radio, optical and UV sources for 4FGL J0436.9+2915

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 CXOSEXSI J043736.6+292341 04 37 36.65 +29 23 41.64 11.65 CHANDRA
X043737.04+292343.0 04 37 37.03 +29 23 43.08 11.73 CHANDRA
2 2CXO J043710.0+292653 04 37 10.08 +29 26 53.52 11.75 CHANDRA
X043736.26+292358.2 04 37 36.26 +29 23 58.20 11.79 CHANDRA
X043736.77+292400.7 04 37 36.77 +29 24 00.72 11.90 CHANDRA
X043737.32+292403.0 04 37 37.32 +29 24 02.88 12.01 CHANDRA

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J043655+291631 04 36 55.90 +29 16 32.16 1.34 NVSS
2 NVSS J043659+291312 04 36 59.40 +29 13 12.00 2.19 NVSS
3 NVSS J043659+291741 04 36 59.50 +29 17 40.92 2.30 NVSS
4 NVSS J043648+291336 04 36 49.01 +29 13 36.12 2.85 NVSS
5 NVSS J043655+291857 04 36 55.80 +29 18 57.96 3.65 NVSS
6 NVSS J043648+291839 04 36 48.31 +29 18 38.88 4.03 NVSS
7 NVSS J043650+291133 04 36 50.40 +29 11 34.08 4.28 NVSS
8 NVSS J043640+291358 04 36 40.39 +29 13 59.16 4.32 NVSS
9 NVSS J043702+292022 04 37 02.59 +29 20 21.84 5.04 NVSS
10 NVSS J043648+291033 04 36 48.79 +29 10 33.96 5.33 NVSS
11 NVSS J043650+290940 04 36 50.11 +29 09 39.96 6.05 NVSS
12 NVSS J043639+291049 04 36 39.79 +29 10 49.08 6.22 NVSS
13 NVSS J043658+290857 04 36 58.20 +29 08 57.12 6.44 NVSS
14 HD 282342 04 37 25.85 +29 11 54.24 6.79 HDEC
15 HD 283723 04 37 08.38 +29 08 15.72 7.41 HDEC
PPM 93636 04 37 08.38 +29 08 15.72 7.41 PPM
BD+28 672 04 37 08.35 +29 08 15.36 7.42 ACRS
SAO 76674 04 37 08.52 +29 08 14.28 7.44 SAO
16 NVSS J043702+292304 04 37 02.21 +29 23 03.84 7.71 NVSS
17 NVSS J043623+291644 04 36 23.21 +29 16 45.12 7.96 NVSS
18 NVSS J043621+291739 04 36 21.50 +29 17 39.12 8.51 NVSS
QORG J043621.3+291741 04 36 21.29 +29 17 40.92 8.56 QORGCAT
HD 282343 04 36 20.88 +29 17 33.00 8.62 HDEC
19 NVSS J043648+290659 04 36 48.70 +29 07 00.12 8.70 NVSS
20 NVSS J043628+290922 04 36 28.70 +29 09 21.96 8.97 NVSS
21 NVSS J043744+291343 04 37 44.50 +29 13 44.04 10.03 NVSS
22 NVSS J043619+291011 04 36 19.70 +29 10 10.92 10.05 NVSS
23 NVSS J043659+292527 04 36 59.81 +29 25 27.84 10.08 NVSS
24 HD 283722 04 36 13.73 +29 07 40.44 12.56 HDEC
PPM 93625 04 36 13.73 +29 07 40.08 12.56 PPM
BD+28 669 04 36 13.63 +29 07 40.44 12.58 ACRS
25 NVSS J043751+292138 04 37 51.00 +29 21 38.16 12.93 NVSS
26 NVSS J043607+290417 04 36 07.30 +29 04 18.12 15.84 NVSS

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