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 J0258.9+0552

Field

Detected Excesses

Swift-XRT image of the field for 3FGL J0258.9+0552 Swift-XRT detections in the field for 3FGL J0258.9+0552

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 02 58 57.44 +05 52 43.75 4.71 (1.3 ± 0.2) x 10-2 53 6.111 6.111

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 59 42.18 +05 55 28.24 5.82 (3.0 ± 1.0) x 10-3 14 3.099 2.948
2 02 59 29.41 +05 55 18.47 5.89 (2.4 ± 0.9) x 10-3 13 2.525 2.641
3 02 58 50.44 +05 41 05.79 6.52 (1.9 ± 0.8) x 10-3 9 2.381 2.342
4 02 59 44.00 +05 49 06.86 6.41 (1.9 ± 0.8) x 10-3 13 2.309 2.299
5 02 58 34.37 +05 51 56.72 6.41 (1.9 ± 0.8) x 10-3 15 2.349 2.272
6 02 59 22.28 +05 59 24.03 6.41 (1.7 ± 0.8) x 10-3 11 2.585 2.169

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 3FGL J0258.9+0552 Swift-XRT image with known radio, optical and UV sources for 3FGL J0258.9+0552

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2RXP J025857.3+055241 02 58 57.29 +05 52 41.16 0.14 ROSAT
1WGA J0258.9+0552 02 58 57.50 +05 52 44.40 0.18 ROSAT
2 1WGA J0259.0+0556 02 59 02.81 +05 56 08.52 3.82 ROSAT
3 1WGA J0259.4+0553 02 59 27.00 +05 53 51.72 7.45 ROSAT
4 3XMM J025827.8+055404 02 58 27.86 +05 54 04.68 7.53 XMM-NEWTON
5 1WGA J0259.3+0557 02 59 21.41 +05 57 19.44 7.61 ROSAT
6 2MAXI J0259+060 02 59 12.00 +06 00 00.00 8.27 MAXI
7 1WGA J0258.8+0543 02 58 51.31 +05 43 58.08 8.72 ROSAT
8 3XMM J025821.9+055347 02 58 21.91 +05 53 48.12 8.94 XMM-NEWTON
9 1BMW 025839.3+060045 02 58 39.34 +06 00 45.00 9.36 ROSAT
10 3XMM J025824.2+055811 02 58 24.24 +05 58 11.28 10.01 XMM-NEWTON
11 3XMM J025827.5+055934 02 58 27.50 +05 59 34.44 10.25 XMM-NEWTON
12 3XMM J025816.8+055455 02 58 16.92 +05 54 55.80 10.37 XMM-NEWTON
3XMM J025816.8+055455 02 58 16.80 +05 54 55.08 10.40 XMM-NEWTON
13 3XMM J025836.6+060228 02 58 36.67 +06 02 28.32 11.19 XMM-NEWTON
14 1WGA J0259.6+0555 02 59 40.51 +05 55 53.76 11.20 ROSAT
15 1WGA J0258.8+0541 02 58 49.10 +05 41 23.64 11.36 ROSAT
16 3XMM J025811.2+055227 02 58 11.26 +05 52 27.84 11.51 XMM-NEWTON
[MML2015] 5BZQ J0258+0541 02 58 50.52 +05 41 08.16 11.55 null
17 3XMM J025820.9+060009 02 58 21.70 +06 00 09.72 11.83 XMM-NEWTON
3XMM J025820.9+060009 02 58 20.95 +06 00 09.00 11.85 XMM-NEWTON
3XMM J025814.3+055821 02 58 14.40 +05 58 21.00 12.19 XMM-NEWTON
18 3XMM J025826.7+060219 02 58 26.76 +06 02 19.68 12.41 XMM-NEWTON
19 X025812.78+055831.3 02 58 12.79 +05 58 31.44 12.63 CHANDRA
CXO J025812.6+055830 02 58 12.62 +05 58 30.00 12.65 CHANDRA
CXOGSG J025812.6+055830 02 58 12.62 +05 58 30.36 12.65 CHANDRA
3XMM J025812.5+055829 02 58 12.60 +05 58 30.36 12.65 XMM-NEWTON
3XMM J025812.5+055829 02 58 12.55 +05 58 28.56 12.66 XMM-NEWTON
1WGA J0258.4+0602 02 58 24.41 +06 02 41.28 13.06 ROSAT
2RXP J025824.5+060245 02 58 24.48 +06 02 44.88 13.10 ROSAT
20 2XMM J025824.6+060248 02 58 24.62 +06 02 48.48 13.12 XMM-NEWTON
3XMM J025824.6+060248 02 58 24.62 +06 02 48.84 13.12 XMM-NEWTON
3XMM J025824.6+060248 02 58 24.62 +06 02 48.84 13.12 XMM-NEWTON
1RXH J025824.6+060248 02 58 24.60 +06 02 48.84 13.13 ROSAT
1BMW 025824.3+060250 02 58 24.31 +06 02 49.92 13.18 ROSAT
2E 0255.7+0551 02 58 23.18 +06 02 60.00 13.49 EINSTEIN
21 X025809.82+055921.4 02 58 09.82 +05 59 21.48 13.67 CHANDRA
CXO J025809.8+055921 02 58 09.82 +05 59 21.48 13.68 CHANDRA
CXOGSG J025809.8+055921 02 58 09.82 +05 59 21.84 13.68 CHANDRA
3XMM J025809.6+055921 02 58 09.65 +05 59 21.48 13.71 XMM-NEWTON
3XMM J025810.2+055948 02 58 10.32 +05 59 48.12 13.80 XMM-NEWTON
CXOGSG J025810.2+055947 02 58 10.25 +05 59 47.40 13.81 CHANDRA
3XMM J025810.2+055948 02 58 10.25 +05 59 47.76 13.81 XMM-NEWTON
CXO J025810.2+055948 02 58 10.27 +05 59 48.48 13.81 CHANDRA
X025810.23+055948.1 02 58 10.22 +05 59 48.12 13.82 CHANDRA

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J025857+055240 02 58 57.79 +05 52 40.08 0.14 NVSS
FIRST J025857.5+055244 02 58 57.60 +05 52 44.04 0.18 FIRST
2 NVSS J025904+055042 02 59 04.90 +05 50 42.00 2.61 NVSS
FIRST J025905.0+055031 02 59 05.11 +05 50 30.84 2.77 FIRST
TGSSADR J025905.0+055031 02 59 05.11 +05 50 30.84 2.77 GMRTAS150M
3 TGSSADR J025838.6+055151 02 58 38.59 +05 51 51.12 4.75 GMRTAS150M
VLSSr J025841.4+054828 02 58 41.40 +05 48 28.08 5.72 VLSSR
0256+056 02 58 39.91 +05 48 48.96 5.77 MRC
FIRST J025840.8+054829 02 58 40.90 +05 48 29.88 5.80 FIRST
GLEAM J025840+054837 02 58 40.39 +05 48 37.08 5.80 GLEAMEGCAT
TXS 0256+056 02 58 40.39 +05 48 36.00 5.82 TEXAS
TGSSADR J025840.3+054834 02 58 40.39 +05 48 33.84 5.83 GMRTAS150M
4 NVSS J025840+054834 02 58 40.39 +05 48 33.84 5.83 NVSS
FIRST J025839.8+054840 02 58 39.91 +05 48 39.96 5.86 FIRST
PMN J0258+0548 02 58 39.91 +05 48 23.04 6.05 PMN
5 GB6 J0258+0548 02 58 38.11 +05 48 25.92 6.35 GB6
0256+0536 02 58 38.59 +05 48 15.12 6.39 NORTH6CM
6 OD+095 02 58 44.40 +05 46 57.00 6.49 DIXON
7 NVSS J025852+054318 02 58 52.51 +05 43 18.84 9.33 NVSS
8 NVSS J025927+054647 02 59 27.00 +05 46 46.92 9.34 NVSS
FIRST J025852.8+054316 02 58 52.80 +05 43 17.04 9.35 FIRST
9 PCCS2 143 G170.88-44.96 02 58 55.51 +05 42 34.92 9.99 PCCS143GHZ
10 NVSS J025836+054352 02 58 36.91 +05 43 53.04 10.08 NVSS
FIRST J025836.8+054349 02 58 36.91 +05 43 50.16 10.13 FIRST
11 NVSS J025819+054840 02 58 19.51 +05 48 41.04 10.23 NVSS
12 NVSS J025825+054443 02 58 25.30 +05 44 44.16 11.20 NVSS
GLEAM J025850+054112 02 58 50.81 +05 41 12.84 11.46 GLEAMEGCAT
FIRST J025850.5+054108 02 58 50.50 +05 41 08.16 11.55 FIRST
CRATES J025851+054053 02 58 50.50 +05 41 08.16 11.55 CRATES
CGRaBS J0258+0541 02 58 50.50 +05 41 08.16 11.55 CGRABS
[MML2015] 5BZQ J0258+0541 02 58 50.50 +05 41 08.16 11.55 ROMABZCAT
TGSSADR J025850.5+054107 02 58 50.59 +05 41 07.08 11.56 GMRTAS150M
13 NVSS J025850+054107 02 58 50.50 +05 41 07.08 11.56 NVSS
14 MITG J0258+0540 02 58 54.00 +05 40 49.08 11.77 MITGB6CM
GB6 J0258+0540 02 58 51.00 +05 40 53.04 11.78 GB6
0256+0528 02 58 51.00 +05 40 51.96 11.80 NORTH6CM
PMN J0258+0540 02 58 50.21 +05 40 53.04 11.81 PMN
15 FIRST J025823.2+054420 02 58 23.30 +05 44 20.04 11.84 FIRST
FIRST J025824.0+054400 02 58 24.00 +05 44 00.96 11.94 FIRST
16 NVSS J025833+054200 02 58 33.19 +05 42 01.08 12.15 NVSS
17 NVSS J025909+060430 02 59 09.19 +06 04 30.00 12.29 NVSS
18 NVSS J025945+054811 02 59 45.19 +05 48 11.16 12.63 NVSS
19 NVSS J025837+060412 02 58 37.01 +06 04 12.00 12.72 NVSS
20 NVSS J025825+060235 02 58 25.90 +06 02 35.16 12.75 NVSS
21 NVSS J025935+054309 02 59 35.21 +05 43 09.84 13.27 NVSS

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