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 J0025.4-4838

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J0025.4-4838 Swift-XRT detections in the field for 4FGL J0025.4-4838

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 00 25 36.50 -48 38 04.03 4.60 (1.8 ± 0.2) x 10-2 66 7.064 7.490
2 00 24 40.65 -48 35 48.11 5.59 (4.2 ± 1.2) x 10-3 21 3.777 3.545
3 00 25 46.81 -48 48 21.06 4.76 (3.9 ± 1.3) x 10-3 31 4.192 3.035

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 00 25 52.54 -48 28 04.25 6.41 (2.4 ± 0.9) x 10-3 12 2.798 2.653
2 00 24 20.98 -48 41 29.36 5.31 (2.4 ± 1.0) x 10-3 19 2.889 2.420
3 00 25 22.53 -48 48 45.00 5.14 (2.4 ± 1.1) x 10-3 14 3.053 2.163
4 00 25 53.41 -48 48 07.58 4.83 (2.1 ± 1.0) x 10-3 21 2.846 2.070
5 00 25 53.64 -48 47 20.97 4.88 (2.1 ± 1.1) x 10-3 20 2.502 1.812

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J0025.4-4838 Swift-XRT image with known radio, optical and UV sources for 4FGL J0025.4-4838


No known X-ray or gamma ray sources found.

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 PGC 485134 00 25 28.20 -48 39 39.96 1.35 PGC2003
2 PGC 485026 00 25 24.60 -48 40 18.12 2.07 PGC2003
3 PGC 485205 00 25 43.99 -48 39 15.12 2.78 PGC2003
4 PGC 485103 00 25 44.50 -48 39 51.12 3.11 PGC2003
PGC 485165 00 25 45.60 -48 39 29.16 3.11 PGC2003
5 SUMSS J002507-484015 00 25 07.51 -48 40 14.88 3.93 SUMSS
6 PGC 485304 00 25 04.10 -48 38 42.00 3.99 PGC2003
7 PGC 486049 00 25 22.90 -48 34 14.16 4.17 PGC2003
8 PGC 484627 00 25 37.80 -48 42 20.16 4.32 PGC2003
9 PGC 484939 00 25 51.70 -48 40 42.96 4.57 PGC2003
10 PGC 485969 00 25 10.90 -48 34 41.16 4.62 PGC2003
11 SUMSS J002558-484107 00 25 58.39 -48 41 07.08 5.73 SUMSS
TGSSADR J002558.5-484107 00 25 58.51 -48 41 07.08 5.75 GMRTAS150M
GLEAM J002558-484104 00 25 58.70 -48 41 03.84 5.75 GLEAMEGCAT
12 PGC 484659 00 26 04.39 -48 42 11.88 7.13 PGC2003
13 PGC 486323 00 25 00.50 -48 32 34.08 7.35 PGC2003
14 PGC 483826 00 25 25.61 -48 46 39.00 8.35 PGC2003
15 PGC 486592 00 24 55.30 -48 31 06.96 9.02 PGC2003
16 SUMSS J002435-484046 00 24 35.40 -48 40 45.84 9.05 SUMSS
17 PGC 486814 00 25 08.90 -48 29 51.00 9.05 PGC2003
18 SUMSS J002435-484306 00 24 35.81 -48 43 05.88 9.88 SUMSS
TGSSADR J002435.6-484305 00 24 35.59 -48 43 05.88 9.90 GMRTAS150M
GLEAM J002435-484307 00 24 35.59 -48 43 08.04 9.92 GLEAMEGCAT
19 PGC 483504 00 25 04.20 -48 48 24.84 10.85 PGC2003
20 PGC 487308 00 25 36.00 -48 26 57.84 11.42 PGC2003
21 PGC 484029 00 26 22.01 -48 45 52.92 11.67 PGC2003
22 PGC 485628 00 24 16.51 -48 36 48.96 11.94 PGC2003
23 PGC 486851 00 26 22.30 -48 29 39.84 12.45 PGC2003
24 PGC 484137 00 26 31.90 -48 45 05.04 12.51 PGC2003
25 PGC 483199 00 25 03.31 -48 50 12.12 12.57 PGC2003
26 PGC 483544 00 26 16.51 -48 48 11.88 12.70 PGC2003
27 PGC 486137 00 26 39.91 -48 33 42.84 12.72 PGC2003
28 DENISP_G_J0024214-483135 00 24 21.41 -48 31 35.04 12.93 DENISIGAL
PGC 143497 00 24 21.41 -48 31 35.04 12.93 PGC2003
29 TGSSADR J002639.6-484419 00 26 39.60 -48 44 18.96 13.24 GMRTAS150M
SUMSS J002639-484420 00 26 40.01 -48 44 20.04 13.30 SUMSS
30 PGC 483646 00 26 35.50 -48 47 38.04 14.50 PGC2003

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