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 J0857.7-4507

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J0857.7-4507 Swift-XRT detections in the field for 4FGL J0857.7-4507


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 08 57 42.28 -45 16 34.73 4.90 (2.3 ± 0.9) x 10-3 21 2.809 2.512

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J0857.7-4507 Swift-XRT image with known radio, optical and UV sources for 4FGL J0857.7-4507

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 CXOGSG J085751.6-450356 08 57 51.67 -45 03 56.52 3.55 CHANDRA
2 CXOGSG J085804.0-450759 08 58 04.01 -45 07 59.16 3.60 CHANDRA
2CXO J085804.0-450800 08 58 04.06 -45 08 00.24 3.61 CHANDRA
X085804.08-450800.4 08 58 04.08 -45 08 00.24 3.62 CHANDRA
3 2CXO J085802.9-450351 08 58 02.93 -45 03 51.48 4.74 CHANDRA
2CXO J085801.8-450329 08 58 01.85 -45 03 29.52 4.88 CHANDRA
X085801.77-450328.3 08 58 01.78 -45 03 28.44 4.89 CHANDRA
4 2CXO J085811.7-450731 08 58 11.78 -45 07 31.08 4.90 CHANDRA
CXOGSG J085801.9-450327 08 58 01.97 -45 03 28.08 4.92 CHANDRA
5 2CXO J085812.3-450613 08 58 12.31 -45 06 14.04 5.08 CHANDRA
X085812.33-450614.0 08 58 12.34 -45 06 14.04 5.09 CHANDRA
CXOGSG J085812.3-450613 08 58 12.34 -45 06 13.68 5.09 CHANDRA
X085814.25-450552.5 08 58 14.26 -45 05 52.44 5.50 CHANDRA
2CXO J085814.2-450552 08 58 14.26 -45 05 52.80 5.50 CHANDRA
6 CXOGSG J085814.2-450552 08 58 14.28 -45 05 52.44 5.50 CHANDRA
7 X085815.20-450938.8 08 58 15.19 -45 09 38.88 6.00 CHANDRA
8 CXOGSG J085826.7-450658 08 58 26.76 -45 06 59.04 7.53 CHANDRA
9 X085827.93-450615.9 08 58 27.94 -45 06 15.84 7.80 CHANDRA
2CXO J085827.9-450615 08 58 27.94 -45 06 15.84 7.80 CHANDRA
CXOGSG J085827.9-450616 08 58 27.96 -45 06 16.20 7.80 CHANDRA
10 CXOGSG J085818.3-450216 08 58 18.38 -45 02 16.80 7.83 CHANDRA
X085818.40-450216.7 08 58 18.41 -45 02 16.80 7.83 CHANDRA
2CXO J085818.4-450216 08 58 18.43 -45 02 16.80 7.83 CHANDRA
11 2CXO J085824.5-451039 08 58 24.53 -45 10 39.00 7.91 CHANDRA
X085824.60-451039.4 08 58 24.60 -45 10 39.36 7.93 CHANDRA
CXOGSG J085824.6-451039 08 58 24.70 -45 10 39.72 7.94 CHANDRA
12 X085812.52-450047.5 08 58 12.53 -45 00 47.52 8.17 CHANDRA
13 2CXO J085830.3-450803 08 58 30.38 -45 08 03.84 8.21 CHANDRA
X085830.44-450803.8 08 58 30.43 -45 08 03.84 8.22 CHANDRA
X085830.70-450757.7 08 58 30.70 -45 07 57.72 8.26 CHANDRA
14 2CXO J085821.0-451224 08 58 21.07 -45 12 24.48 8.33 CHANDRA
X085821.11-451225.1 08 58 21.12 -45 12 25.20 8.34 CHANDRA
CXOGSG J085821.1-451225 08 58 21.14 -45 12 25.20 8.35 CHANDRA
15 2CXO J085825.4-451130 08 58 25.51 -45 11 30.48 8.46 CHANDRA
16 X085830.64-450921.8 08 58 30.65 -45 09 21.96 8.49 CHANDRA
2CXO J085832.4-450819 08 58 32.50 -45 08 19.32 8.61 CHANDRA
17 2CXO J085830.3-450420 08 58 30.34 -45 04 20.28 8.67 CHANDRA
X085830.36-450420.3 08 58 30.36 -45 04 20.28 8.67 CHANDRA
CXOGSG J085830.3-450420 08 58 30.36 -45 04 20.28 8.67 CHANDRA
18 2CXO J085833.8-450733 08 58 33.86 -45 07 33.24 8.79 CHANDRA
X085833.86-450733.7 08 58 33.86 -45 07 33.60 8.79 CHANDRA
CXOGSG J085833.8-450733 08 58 33.86 -45 07 33.60 8.79 CHANDRA
2CXO J085831.0-450414 08 58 31.03 -45 04 14.88 8.81 CHANDRA
X085831.06-450415.3 08 58 31.06 -45 04 15.24 8.81 CHANDRA
CXOGSG J085831.0-450415 08 58 31.06 -45 04 15.24 8.81 CHANDRA
X085835.65-450719.7 08 58 35.64 -45 07 19.56 9.10 CHANDRA
19 CXOGSG J085830.4-450249 08 58 30.43 -45 02 49.56 9.29 CHANDRA
X085830.51-450249.8 08 58 30.50 -45 02 49.92 9.31 CHANDRA
20 2CXO J085741.8-451640 08 57 41.81 -45 16 40.80 9.46 CHANDRA
4XMMs J085741.8-451640 08 57 41.88 -45 16 40.80 9.46 XMM-NEWTON
4XMM J085741.8-451641 08 57 41.86 -45 16 41.52 9.47 XMM-NEWTON
21 2CXO J085838.0-450626 08 58 38.04 -45 06 26.28 9.56 CHANDRA
22 X085824.48-450042.9 08 58 24.48 -45 00 42.84 9.66 CHANDRA
2CXO J085824.4-450042 08 58 24.48 -45 00 42.48 9.67 CHANDRA
CXOGSG J085824.5-450042 08 58 24.50 -45 00 42.48 9.67 CHANDRA
23 4XMM J085748.0-451657 08 57 48.00 -45 16 57.72 9.76 XMM-NEWTON
4XMMs J085748.0-451658 08 57 48.10 -45 16 58.44 9.77 XMM-NEWTON
24 2CXO J085836.9-450420 08 58 36.96 -45 04 20.64 9.77 CHANDRA
CXOGSG J085836.9-450420 08 58 36.96 -45 04 20.28 9.77 CHANDRA
X085836.97-450420.4 08 58 36.96 -45 04 20.28 9.78 CHANDRA
25 X085839.15-450859.9 08 58 39.14 -45 08 60.00 9.88 CHANDRA
2CXO J085839.1-450859 08 58 39.17 -45 08 60.00 9.88 CHANDRA
CXOGSG J085839.1-450859 08 58 39.17 -45 08 60.00 9.88 CHANDRA
26 X085836.67-451053.2 08 58 36.67 -45 10 53.04 9.97 CHANDRA
2CXO J085836.6-451053 08 58 36.67 -45 10 53.40 9.97 CHANDRA
27 X085833.99-450207.7 08 58 33.98 -45 02 07.80 10.18 CHANDRA
CXOGSG J085834.0-450207 08 58 34.03 -45 02 07.80 10.19 CHANDRA
28 2CXO J085841.7-450755 08 58 41.71 -45 07 55.92 10.19 CHANDRA
2CXO J085834.0-450207 08 58 34.03 -45 02 07.44 10.19 CHANDRA
CXOGSG J085841.7-450755 08 58 41.74 -45 07 55.92 10.20 CHANDRA
X085841.73-450755.5 08 58 41.74 -45 07 55.56 10.20 CHANDRA
29 2CXO J085837.1-450303 08 58 37.15 -45 03 03.24 10.26 CHANDRA
CXOGSG J085837.1-450303 08 58 37.15 -45 03 03.60 10.26 CHANDRA
30 2CXO J085840.5-450443 08 58 40.51 -45 04 44.04 10.27 CHANDRA
31 2CXO J085840.0-450359 08 58 40.01 -45 03 59.40 10.39 CHANDRA
32 X085838.93-451118.2 08 58 38.93 -45 11 18.24 10.50 CHANDRA
X085843.46-450755.5 08 58 43.46 -45 07 55.56 10.50 CHANDRA
2CXO J085843.4-450755 08 58 43.46 -45 07 55.56 10.50 CHANDRA
CXOGSG J085843.4-450755 08 58 43.46 -45 07 55.56 10.50 CHANDRA
33 CXOGSG J085845.8-450653 08 58 45.79 -45 06 54.00 10.90 CHANDRA
2CXO J085845.8-450653 08 58 45.82 -45 06 54.00 10.90 CHANDRA
X085845.81-450653.9 08 58 45.82 -45 06 54.00 10.90 CHANDRA
34 X085846.96-450754.1 08 58 46.97 -45 07 54.12 11.12 CHANDRA
2CXO J085846.9-450754 08 58 46.97 -45 07 54.12 11.12 CHANDRA
CXOGSG J085846.9-450754 08 58 46.97 -45 07 54.12 11.12 CHANDRA
35 2CXO J085845.1-450419 08 58 45.12 -45 04 19.56 11.16 CHANDRA
CXOGSG J085845.1-450419 08 58 45.14 -45 04 19.20 11.17 CHANDRA
36 CXOGSG J085847.0-450550 08 58 47.02 -45 05 50.64 11.19 CHANDRA
2CXO J085847.0-450550 08 58 47.04 -45 05 50.64 11.20 CHANDRA
37 CXOGSG J085837.6-451330 08 58 37.61 -45 13 30.00 11.33 CHANDRA
2CXO J085837.6-451329 08 58 37.63 -45 13 29.64 11.33 CHANDRA
X085837.66-451330.4 08 58 37.66 -45 13 30.36 11.34 CHANDRA
38 4XMM J085717.8-451740 08 57 17.88 -45 17 40.92 11.42 XMM-NEWTON
39 2CXO J085843.9-450242 08 58 43.97 -45 02 42.36 11.50 CHANDRA
40 2CXO J085845.4-450319 08 58 45.43 -45 03 19.80 11.51 CHANDRA
41 2CXO J085847.5-451055 08 58 47.57 -45 10 55.56 11.79 CHANDRA
X085847.58-451055.5 08 58 47.59 -45 10 55.56 11.79 CHANDRA
CXOGSG J085847.5-451055 08 58 47.59 -45 10 55.56 11.80 CHANDRA
CXOGSG J085848.0-451046 08 58 48.00 -45 10 46.92 11.82 CHANDRA
X085848.03-451046.6 08 58 48.02 -45 10 46.56 11.82 CHANDRA
2CXO J085848.0-451046 08 58 48.05 -45 10 46.92 11.83 CHANDRA
42 2CXO J085848.6-450311 08 58 48.67 -45 03 11.88 12.10 CHANDRA
X085848.68-450311.7 08 58 48.67 -45 03 11.88 12.10 CHANDRA
CXOGSG J085848.6-450311 08 58 48.70 -45 03 11.88 12.10 CHANDRA
43 2CXO J085851.9-450426 08 58 51.94 -45 04 26.40 12.30 CHANDRA
X085851.95-450426.1 08 58 51.96 -45 04 26.04 12.30 CHANDRA
CXOGSG J085851.9-450426 08 58 51.96 -45 04 26.40 12.30 CHANDRA
44 4XMM J085711.1-451841 08 57 11.18 -45 18 41.04 12.83 XMM-NEWTON
4XMMs J085711.1-451842 08 57 11.14 -45 18 42.12 12.86 XMM-NEWTON
45 2CXO J085849.6-445928 08 58 49.63 -44 59 28.68 13.93 CHANDRA
46 X085848.71-445857.2 08 58 48.72 -44 58 57.36 14.10 CHANDRA
2CXO J085848.7-445855 08 58 48.72 -44 58 55.56 14.12 CHANDRA
CXOGSG J085848.8-445853 08 58 48.89 -44 58 53.76 14.16 CHANDRA
47 2CXO J085845.3-445753 08 58 45.36 -44 57 53.28 14.30 CHANDRA
X085845.32-445752.1 08 58 45.31 -44 57 52.20 14.31 CHANDRA
CXOGSG J085845.4-445752 08 58 45.41 -44 57 52.20 14.32 CHANDRA

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 PMN J0857-4512 08 57 42.29 -45 12 59.04 5.76 PMN
2 PMN J0857-4514 08 57 12.41 -45 14 30.12 9.16 PMN
3 PMN J0858-4515 08 58 31.20 -45 15 33.84 11.77 PMN
4 PMN J0857-4518 08 57 18.70 -45 18 16.92 11.92 PMN
PGC 2807077 08 58 31.99 -45 15 38.88 11.93 PGC2003
5 PPM 756331 08 58 48.72 -45 03 12.24 12.10 PPM
6 TGSSADR J085828.3-451638 08 58 28.39 -45 16 39.00 12.23 GMRTAS150M
MGPS J085828-451636 08 58 28.90 -45 16 36.12 12.25 MGPS2
7 PPM 756330 08 58 46.27 -44 56 02.40 15.69 PPM

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