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 J0259.0+0552

Field

Detected Excesses

Swift-XRT image of the field for 4FGL J0259.0+0552 Swift-XRT detections in the field for 4FGL J0259.0+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 57.39 +05 52 43.71 4.71 (1.2 ± 0.2) x 10-2 50 6.183 5.914

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 42.29 +05 55 24.14 5.82 (3.0 ± 1.0) x 10-3 14 3.136 2.990
2 02 59 29.38 +05 55 18.60 5.82 (2.2 ± 0.9) x 10-3 13 2.529 2.573
3 02 58 34.33 +05 51 55.47 6.41 (2.0 ± 0.8) x 10-3 14 2.377 2.445
4 02 58 50.27 +05 41 02.90 6.52 (1.9 ± 0.8) x 10-3 9 2.366 2.350
5 02 59 43.47 +05 48 56.88 6.41 (1.9 ± 0.8) x 10-3 10 2.275 2.271
6 02 59 22.29 +05 59 24.53 6.41 (1.7 ± 0.8) x 10-3 11 2.462 2.159

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 4FGL J0259.0+0552 Swift-XRT image with known radio, optical and UV sources for 4FGL J0259.0+0552

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1WGA J0258.9+0552 02 58 57.50 +05 52 44.40 0.74 ROSAT
2RXP J025857.3+055241 02 58 57.29 +05 52 41.16 0.79 ROSAT
2 1WGA J0259.0+0556 02 59 02.81 +05 56 08.52 3.51 ROSAT
3 1WGA J0259.4+0553 02 59 27.00 +05 53 51.72 6.71 ROSAT
4 1WGA J0259.3+0557 02 59 21.41 +05 57 19.44 6.98 ROSAT
5 2MAXI J0259+060 02 59 12.00 +06 00 00.00 7.86 MAXI
6 1WGA J0258.8+0543 02 58 51.31 +05 43 58.08 9.00 ROSAT
7 1BMW 025839.3+060045 02 58 39.34 +06 00 45.00 9.63 ROSAT
8 4XMM J025821.9+055348 02 58 21.91 +05 53 48.48 9.65 XMM-NEWTON
9 1WGA J0259.6+0555 02 59 40.51 +05 55 53.76 10.46 ROSAT
10 2CXO J025820.9+055627 02 58 20.95 +05 56 27.24 10.52 CHANDRA
11 4XMM J025824.2+055811 02 58 24.24 +05 58 11.28 10.56 XMM-NEWTON
12 4XMM J025827.4+055934 02 58 27.48 +05 59 34.44 10.71 XMM-NEWTON
13 4XMM J025816.9+055455 02 58 16.97 +05 54 56.52 11.05 XMM-NEWTON
4XMM J025816.9+055455 02 58 16.80 +05 54 55.08 11.09 XMM-NEWTON
14 4XMM J025836.6+060227 02 58 36.67 +06 02 27.96 11.44 XMM-NEWTON
15 1WGA J0258.8+0541 02 58 49.10 +05 41 23.64 11.64 ROSAT
[MML2015] 5BZQ J0258+0541 02 58 50.52 +05 41 08.16 11.81
16 4XMM J025820.9+060009 02 58 21.05 +06 00 09.72 12.33 XMM-NEWTON
4XMM J025820.9+060009 02 58 20.95 +06 00 09.00 12.34 XMM-NEWTON
4XMM J025814.4+055821 02 58 14.40 +05 58 21.72 12.78 XMM-NEWTON
17 4XMM J025826.7+060219 02 58 26.71 +06 02 19.32 12.78 XMM-NEWTON
18 X025812.78+055831.3 02 58 12.79 +05 58 31.44 13.22 CHANDRA
2CXO J025812.6+055830 02 58 12.62 +05 58 30.36 13.24 CHANDRA
CXOGSG J025812.6+055830 02 58 12.62 +05 58 30.36 13.24 CHANDRA
4XMM J025812.5+055829 02 58 12.60 +05 58 30.00 13.25 XMM-NEWTON
4XMM J025812.5+055829 02 58 12.50 +05 58 28.56 13.26 XMM-NEWTON
1WGA J0258.4+0602 02 58 24.41 +06 02 41.28 13.44 ROSAT
2RXP J025824.5+060245 02 58 24.48 +06 02 44.88 13.47 ROSAT
19 4XMM J025824.6+060248 02 58 24.65 +06 02 48.48 13.49 XMM-NEWTON
2XMM J025824.6+060248 02 58 24.62 +06 02 48.48 13.49 XMM-NEWTON
4XMM J025824.6+060248 02 58 24.62 +06 02 48.84 13.50 XMM-NEWTON
1RXH J025824.6+060248 02 58 24.60 +06 02 48.84 13.50 ROSAT
1BMW 025824.3+060250 02 58 24.31 +06 02 49.92 13.56 ROSAT
2E 0255.7+0551 02 58 23.18 +06 02 60.00 13.87 EINSTEIN

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 0.66 NVSS
FIRST J025857.5+055244 02 58 57.60 +05 52 44.04 0.72 FIRST
QORG J025857.5+055243 02 58 57.50 +05 52 42.96 0.74 QORGCAT
2 SAO 110881 02 59 06.55 +05 52 53.76 1.53 SAO
PPM 146112 02 59 06.58 +05 52 52.32 1.53 PPM
BD+05 429 02 59 06.58 +05 52 52.68 1.54 ACRS
3 NVSS J025904+055042 02 59 04.90 +05 50 42.00 2.27 NVSS
FIRST J025905.0+055031 02 59 05.11 +05 50 30.84 2.45 FIRST
TGSSADR J025905.0+055031 02 59 05.11 +05 50 30.84 2.45 GMRTAS150M
4 QORG J025840.2+055348 02 58 40.20 +05 53 48.12 5.16 QORGCAT
5 TGSSADR J025838.6+055151 02 58 38.59 +05 51 51.12 5.49 GMRTAS150M
VLSSr J025841.4+054828 02 58 41.40 +05 48 28.08 6.33 VLSSR
FIRST J025840.8+054829 02 58 40.90 +05 48 29.88 6.42 FIRST
0256+056 02 58 39.91 +05 48 48.96 6.42 MRC
GLEAM J025840+054837 02 58 40.39 +05 48 37.08 6.43 GLEAMEGCAT
TXS 0256+056 02 58 40.39 +05 48 36.00 6.45 TEXAS
6 NVSS J025840+054834 02 58 40.39 +05 48 33.84 6.46 NVSS
TGSSADR J025840.3+054834 02 58 40.39 +05 48 33.84 6.46 GMRTAS150M
7 QORG J025926.2+055345 02 59 26.21 +05 53 44.88 6.49 QORGCAT
FIRST J025839.8+054840 02 58 39.91 +05 48 39.96 6.50 FIRST
8 0256+0547 02 59 03.58 +05 59 12.84 6.58 ZCAT
PGC 74280 02 59 03.79 +05 59 12.84 6.59 PGC2003
9 QORG J025834.1+055142 02 58 34.10 +05 51 42.12 6.63 QORGCAT
PMN J0258+0548 02 58 39.91 +05 48 23.04 6.68 PMN
10 OD+095 02 58 44.40 +05 46 57.00 6.99 DIXON
11 GB6 J0258+0548 02 58 38.11 +05 48 25.92 7.00 GB6
0256+0536 02 58 38.59 +05 48 15.12 7.02 NORTH6CM
12 BD+05 428 02 58 52.32 +05 45 25.92 7.53 ACRS
PPM 146110 02 58 52.34 +05 45 25.56 7.53 PPM
SAO 110880 02 58 52.18 +05 45 25.20 7.55 SAO
13 PGC 3098045 02 58 33.10 +05 57 15.12 8.20 PGC2003
14 BD+05 427 02 58 48.74 +05 44 22.20 8.80 ACRS
PPM 146109 02 58 48.70 +05 44 22.20 8.81 PPM
SAO 110879 02 58 48.58 +05 44 22.20 8.82 SAO
15 NVSS J025927+054647 02 59 27.00 +05 46 46.92 8.86 NVSS
16 NVSS J025852+054318 02 58 52.51 +05 43 18.84 9.58 NVSS
FIRST J025852.8+054316 02 58 52.80 +05 43 17.04 9.59 FIRST
17 PCCS2 143 G170.88-44.96 02 58 55.51 +05 42 34.92 10.17 PCCS143GHZ
18 NVSS J025836+054352 02 58 36.91 +05 43 53.04 10.58 NVSS
FIRST J025836.8+054349 02 58 36.91 +05 43 50.16 10.62 FIRST
19 A0256+0550 02 59 20.83 +06 02 11.76 10.78 ZCAT
PGC 74282 02 59 20.81 +06 02 12.12 10.78 PGC2003
20 NVSS J025819+054840 02 58 19.51 +05 48 41.04 10.95 NVSS
21 0256+0549 02 59 25.51 +06 01 53.40 11.12 ZCAT
PGC 74284 02 59 25.51 +06 01 54.12 11.13 PGC2003
22 PGC 3098053 02 59 42.60 +05 56 26.88 11.14 PGC2003
23 QORG J025836.6+060227 02 58 36.60 +06 02 26.88 11.43 QORGCAT
24 PGC 11239 02 58 15.00 +05 55 00.84 11.54 PGC2003
0255+0543 02 58 15.00 +05 55 01.20 11.54 ZCAT
25 PPM 146126 02 59 47.16 +05 53 09.24 11.62 PPM
BD+05 431 02 59 47.16 +05 53 09.24 11.63 ACRS
SAO 110890 02 59 47.21 +05 53 09.96 11.64 SAO
GLEAM J025850+054112 02 58 50.81 +05 41 12.84 11.71 GLEAMEGCAT
26 0255+0542 02 58 13.68 +05 54 16.20 11.74 ZCAT
PGC 11234 02 58 13.61 +05 54 15.12 11.76 PGC2003
FIRST J025850.5+054108 02 58 50.50 +05 41 08.16 11.81 FIRST
CGRaBS J0258+0541 02 58 50.50 +05 41 08.16 11.81 CGRABS
CRATES J025851+054053 02 58 50.50 +05 41 08.16 11.81 CRATES
[MML2015] 5BZQ J0258+0541 02 58 50.50 +05 41 08.16 11.81 ROMABZCAT
27 NVSS J025825+054443 02 58 25.30 +05 44 44.16 11.81 NVSS
TGSSADR J025850.5+054107 02 58 50.59 +05 41 07.08 11.81 GMRTAS150M
QORG J025850.4+054108 02 58 50.40 +05 41 08.16 11.81 QORGCAT
28 NVSS J025850+054107 02 58 50.50 +05 41 07.08 11.82 NVSS
87GB 02562+0529 02 58 50.50 +05 41 07.08 11.83 VERONCAT
29 MITG J0258+0540 02 58 54.00 +05 40 49.08 11.97 MITGB6CM
30 NVSS J025945+054811 02 59 45.19 +05 48 11.16 12.00 NVSS
31 NVSS J025909+060430 02 59 09.19 +06 04 30.00 12.02 NVSS
GB6 J0258+0540 02 58 51.00 +05 40 53.04 12.03 GB6
32 PGC 74290 02 59 46.10 +05 56 42.00 12.04 PGC2003
0256+0528 02 58 51.00 +05 40 51.96 12.05 NORTH6CM
A0257+0544 02 59 46.15 +05 56 41.64 12.05 ZCAT
PMN J0258+0540 02 58 50.21 +05 40 53.04 12.07 PMN
33 FIRST J025823.2+054420 02 58 23.30 +05 44 20.04 12.46 FIRST
FIRST J025824.0+054400 02 58 24.00 +05 44 00.96 12.54 FIRST
34 NVSS J025833+054200 02 58 33.19 +05 42 01.08 12.64 NVSS
35 PGC 74289 02 59 42.79 +05 45 33.84 12.71 PGC2003
A0257+0533 02 59 42.79 +05 45 33.84 12.71 ZCAT
36 0255+0546B 02 58 14.23 +05 58 18.12 12.79 ZCAT
PGC 11238 02 58 14.21 +05 58 18.84 12.81 PGC2003
SN 2009iv 02 58 14.18 +05 58 19.20 12.81 ASIAGOSN
37 NVSS J025935+054309 02 59 35.21 +05 43 09.84 12.86 NVSS
38 NVSS J025837+060412 02 58 37.01 +06 04 12.00 12.91 NVSS
39 NVSS J025825+060235 02 58 25.90 +06 02 35.16 13.11 NVSS
QORG J025824.6+060247 02 58 24.60 +06 02 47.04 13.48 QORGCAT
40 Unknown 02 59 35.04 +05 41 08.88 14.39 HIC
HIP 13940 02 59 35.02 +05 41 08.52 14.39 HIPPARCOS
41 A0257+0532 02 59 48.48 +05 44 32.28 14.46 ZCAT
PGC 74291 02 59 48.60 +05 44 33.00 14.47 PGC2003
42 PGC 3098051 02 59 47.90 +06 03 39.96 16.12 PGC2003

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