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.

3FGL J0240.0-0253

Field

Detected Excesses
Swift-XRT image of the field for 3FGL J0240.0-0253 Swift-XRT detections in the field for 3FGL J0240.0-0253

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 02 40 01.90 -02 43 21.34 4.33 (1.5 ± 0.2) x 10-2 85 8.686 8.712
2 02 40 04.53 -02 45 03.88 4.33 (1.5 ± 0.2) x 10-2 81 8.503 8.220
3 02 40 23.89 -02 53 31.02 4.90 (6.1 ± 1.3) x 10-3 36 5.073 4.742

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 02 40 49.40 -02 58 23.36 7.71 (1.2 ± 0.6) x 10-3 7 2.222 2.204

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 3FGL J0240.0-0253 Swift-XRT image with known radio, optical and UV sources for 3FGL J0240.0-0253

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2RXS J024004.8-024529 02 40 04.85 -02 45 29.16 8.56 ROSAT
2RXS J024004.8-024529 02 40 04.85 -02 45 29.16 8.56 ROSAT
2 2E 0237.5-0257 02 40 01.80 -02 44 19.68 9.64 EINSTEIN
2E 0237.5-0257 02 40 01.78 -02 44 19.32 9.65 EINSTEIN

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 SAO 130044 02 40 02.18 -02 55 48.36 1.91 SAO
PPM 184884 02 40 02.26 -02 55 48.00 1.91 PPM
2 PGC 175365 02 39 49.10 -02 53 43.08 2.78 PGC2003
FIRST J024024.3-025334 02 40 24.41 -02 53 35.16 6.05 FIRST
QORG J024024.4-025334 02 40 24.41 -02 53 34.08 6.06 QORGCAT
3 NVSS J024024-025335 02 40 24.41 -02 53 35.16 6.07 NVSS
NVSS J024024-0253 02 40 24.41 -02 53 35.16 6.07 OVRO31GHZ
4 FIRST J023955.3-030152 02 39 55.30 -03 01 51.96 8.00 FIRST
TGSSADR J023955.3-030154 02 39 55.39 -03 01 54.84 8.04 GMRTAS150M
FIRST J023928.9-025602 02 39 28.90 -02 56 02.04 8.08 FIRST
5 NVSS J023928-025607 02 39 28.90 -02 56 07.08 8.10 NVSS
VLSSr J023953.3-030156 02 39 53.30 -03 01 57.00 8.16 VLSSR
6 NVSS J023953-030205 02 39 53.40 -03 02 04.92 8.30 NVSS
NVSS J023953-0302 02 39 53.40 -03 02 04.92 8.30 OVRO31GHZ
GLEAM J023954-030207 02 39 54.10 -03 02 08.16 8.31 GLEAMEGCAT
FIRST J023953.0-030205 02 39 53.11 -03 02 06.00 8.32 FIRST
TGSSADR J023953.1-030206 02 39 53.11 -03 02 06.00 8.33 GMRTAS150M
[TCR2006] J0239.9-0302 02 39 52.99 -03 02 07.08 8.34 VLAXL74MHZ
7 FIRST J024020.1-024702 02 40 20.11 -02 47 03.12 8.53 FIRST
8 FIRST J023941.4-030134 02 39 41.40 -03 01 35.04 8.94 FIRST
9 PGC 1079380 02 39 25.20 -02 56 47.04 9.18 PGC2003
10 PGC 1081181 02 39 22.39 -02 51 42.12 9.70 PGC2003
11 NVSS J023949-030343 02 39 49.51 -03 03 43.92 10.12 NVSS
FIRST J023948.7-030352 02 39 48.79 -03 03 52.92 10.31 FIRST
12 NVSS J024031-030036 02 40 31.80 -03 00 36.00 10.32 NVSS
FIRST J024031.8-030044 02 40 31.90 -03 00 45.00 10.42 FIRST
13 FIRST J023937.3-030247 02 39 37.30 -03 02 47.04 10.51 FIRST
14 PGC 1083564 02 40 26.40 -02 45 37.08 10.61 PGC2003
FIRST J024003.0-030453 02 40 03.00 -03 04 53.04 10.95 FIRST
15 NVSS J024003-030455 02 40 03.79 -03 04 54.84 10.99 NVSS
FIRST J023917.3-025707 02 39 17.40 -02 57 06.84 11.14 FIRST
GLEAM J023917-025701 02 39 17.21 -02 57 02.16 11.15 GLEAMEGCAT
TGSSADR J023917.3-025709 02 39 17.30 -02 57 10.08 11.17 GMRTAS150M
16 FIRST J024006.3-030501 02 40 06.31 -03 05 02.04 11.17 FIRST
17 NVSS J023917-025714 02 39 17.11 -02 57 14.04 11.25 NVSS
18 NVSS J023955-024245 02 39 55.90 -02 42 45.00 11.26 NVSS
NVSS J023955-0242 02 39 55.90 -02 42 45.00 11.26 OVRO31GHZ
19 MCG-01-07-028 02 40 13.68 -02 43 08.40 11.34 MCG
20 PGC 1079476 02 40 44.50 -02 56 29.04 11.35 PGC2003
Unknown 02 40 12.00 -02 43 00.12 11.36 RC3
PGC 1084318 02 40 21.19 -02 43 42.96 11.52 PGC2003
21 FIRST J023946.1-030503 02 39 46.20 -03 05 03.84 11.64 FIRST
22 PGC 1084871 02 40 05.30 -02 42 15.12 11.78 PGC2003
23 PGC 10106 02 40 24.10 -02 43 44.04 11.85 PGC2003
QORG J024022.6-024329 02 40 22.61 -02 43 28.92 11.88 QORGCAT
24 NVSS J024022-024326 02 40 22.39 -02 43 27.12 11.89 NVSS
25 PGC 1084974 02 40 00.00 -02 41 58.92 11.98 PGC2003
26 MCG-01-07-029 02 40 25.68 -02 43 08.40 12.56 MCG
27 PGC 1076749 02 39 34.51 -03 05 12.84 12.95 PGC2003
28 NVSS J023919-024510 02 39 19.30 -02 45 11.16 13.47 NVSS
FIRST J023919.3-024504 02 39 19.39 -02 45 05.04 13.51 FIRST
29 PGC 10118 02 40 33.00 -02 43 12.00 13.53 PGC2003
A0238-0256 02 40 32.93 -02 43 11.28 13.53 ZCAT
FIRST J024047.7-024608 02 40 47.71 -02 46 08.04 14.22 FIRST
30 NVSS J024047-024608 02 40 47.81 -02 46 09.12 14.24 NVSS

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