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 J0156.3-2420

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J0156.3-2420 Swift-XRT detections in the field for 4FGL J0156.3-2420

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 01 56 24.35 -24 20 04.65 4.07 (3.8 ± 0.3) x 10-2 142 11.350 11.370
2 01 57 01.25 -24 28 35.23 7.48 (3.0 ± 1.0) x 10-3 11 3.048 3.114

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 01 57 03.74 -24 21 09.90 6.65 (2.8 ± 1.0) x 10-3 13 2.691 2.679
2 01 56 46.35 -24 13 30.96 7.71 (2.0 ± 0.9) x 10-3 8 2.543 2.366
3 01 56 06.04 -24 17 52.16 7.71 (2.0 ± 0.9) x 10-3 11 2.534 2.339
4 01 56 03.75 -24 16 31.08 6.65 (2.1 ± 0.9) x 10-3 10 2.402 2.313
5 01 56 29.51 -24 12 56.85 6.31 (2.3 ± 1.1) x 10-3 9 2.381 2.209
6 01 56 24.12 -24 31 03.85 7.27 (1.6 ± 0.8) x 10-3 6 2.183 2.026

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J0156.3-2420 Swift-XRT image with known radio, optical and UV sources for 4FGL J0156.3-2420


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 NVSS J015556-241951 01 55 56.50 -24 19 51.96 5.05 NVSS
2 NVSS J015636-242354 01 56 36.79 -24 23 53.88 5.64 NVSS
TGSSADR J015608.7-241437 01 56 08.71 -24 14 38.04 5.89 GMRTAS150M
3 NVSS J015608-241436 01 56 08.71 -24 14 35.88 5.92 NVSS
QORG J015608.7-241436 01 56 08.71 -24 14 35.88 5.92 QORGCAT
4 SAO 167413 01 56 18.58 -24 14 02.76 6.03 SAO
PPM 244455 01 56 18.60 -24 14 00.96 6.05 PPM
HIP 9031 01 56 18.60 -24 14 00.96 6.06 HIPPARCOS
CD-24 819 01 56 18.60 -24 14 00.96 6.06 ACRS
HD 11888 01 56 18.60 -24 14 00.96 6.06 HIC
WISH B0153.7-2428B 01 56 08.71 -24 14 26.88 6.06 WISH
5 GLEAM J015639-242403 01 56 39.31 -24 24 03.96 6.16 GLEAMEGCAT
WISH B0154.3-2438 01 56 39.19 -24 24 07.92 6.20 WISH
TGSSADR J015641.3-242420 01 56 41.40 -24 24 20.16 6.71 GMRTAS150M
6 GLEAM J015606-241356 01 56 06.00 -24 13 57.00 6.77 GLEAMEGCAT
WISH B0153.7-2428 01 56 06.50 -24 13 53.04 6.78 WISH
7 NVSS J015642-242416 01 56 42.60 -24 24 16.92 6.90 NVSS
8 PCCS2 143 G205.33-75.06 01 56 31.20 -24 13 15.96 7.39 PCCS143GHZ
TGSSADR J015604.0-241317 01 56 04.10 -24 13 18.12 7.55 GMRTAS150M
WISH B0153.7-2428A 01 56 04.39 -24 13 14.88 7.55 WISH
9 NVSS J015604-241316 01 56 04.20 -24 13 15.96 7.56 NVSS
WISH B0154.1-2427 01 56 29.71 -24 12 55.08 7.58 WISH
10 SPASS J015626-241239 01 56 26.40 -24 12 39.96 7.62 SPASS2P3GH
11 NVSS J015629-241252 01 56 29.71 -24 12 52.92 7.62 NVSS
CRATES J015630-241250 01 56 29.71 -24 12 52.92 7.62 CRATES
AT20G J015629-241252 01 56 29.71 -24 12 51.84 7.62 AT20G
TGSSADR J015629.7-241252 01 56 29.71 -24 12 51.84 7.63 GMRTAS150M
CRATES J015630-241250 01 56 29.71 -24 12 51.84 7.63 CRATES
QORG J015629.7-241252 01 56 29.71 -24 12 51.84 7.63 QORGCAT
GLEAM J015629-241249 01 56 29.50 -24 12 50.04 7.65 GLEAMEGCAT
MWACS J0156.4-2412 01 56 29.90 -24 12 51.84 7.65 MWACS
TXS 0154-244 01 56 30.00 -24 12 51.84 7.66 TEXAS
PMN J0156-2412 01 56 30.00 -24 12 50.04 7.69 PMN
PCCS2 217 G205.30-75.06 01 56 30.60 -24 12 47.88 7.77 PCCS217GHZ
12 NVSS J015602-241221 01 56 02.30 -24 12 20.88 8.57 NVSS
13 WISH B0154.6-2436 01 56 59.11 -24 21 50.04 9.37 WISH
14 SAO 167418 01 56 42.12 -24 27 48.96 9.41 SAO
CD-25 767 01 56 42.19 -24 27 49.68 9.43 ACRS
PPM 244462 01 56 42.17 -24 27 50.04 9.43 PPM
GLEAM J015659-242215 01 56 59.11 -24 22 15.96 9.47 GLEAMEGCAT
TGSSADR J015659.0-242222 01 56 58.99 -24 22 22.08 9.48 GMRTAS150M
15 NVSS J015659-242226 01 56 58.99 -24 22 26.04 9.50 NVSS
QORG J015659.1-242223 01 56 59.11 -24 22 23.16 9.50 QORGCAT
GLEAM J015554-242807 01 55 54.41 -24 28 08.04 9.76 GLEAMEGCAT
TGSSADR J015553.8-242812 01 55 53.90 -24 28 13.08 9.91 GMRTAS150M
16 NVSS J015553-242813 01 55 53.71 -24 28 13.08 9.93 NVSS
QORG J015553.6-242815 01 55 53.59 -24 28 14.88 9.97 QORGCAT
17 NVSS J015645-241208 01 56 45.91 -24 12 07.92 10.08 NVSS
TGSSADR J015645.8-241205 01 56 45.91 -24 12 06.12 10.11 GMRTAS150M
GLEAM J015646-241206 01 56 46.01 -24 12 06.84 10.11 GLEAMEGCAT
WISH B0154.4-2426 01 56 46.01 -24 12 02.16 10.17 WISH
18 PGC 790671 01 57 03.91 -24 22 14.16 10.53 PGC2003
19 PPM 723748 01 57 07.30 -24 22 31.44 11.35 PPM
20 NVSS J015538-241214 01 55 38.30 -24 12 14.04 12.07 NVSS
GLEAM J015537-241203 01 55 37.99 -24 12 03.96 12.25 GLEAMEGCAT
WISH B0153.3-2426 01 55 38.81 -24 11 47.04 12.29 WISH
21 PGC 789569 01 57 01.20 -24 28 33.96 12.89 PGC2003
WISH B0153.2-2443 01 55 36.60 -24 28 51.96 13.01 WISH
GLEAM J015536-242853 01 55 36.50 -24 28 54.12 13.04 GLEAMEGCAT
22 NVSS J015536-242859 01 55 36.79 -24 28 59.16 13.05 NVSS
TGSSADR J015536.7-242858 01 55 36.70 -24 28 59.16 13.06 GMRTAS150M

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