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 J0854.8-4504

Field

Detected Excesses

Swift-XRT image of the field for 4FGL J0854.8-4504 Swift-XRT detections in the field for 4FGL J0854.8-4504


No detected excesses found.

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 08 55 35.87 -45 05 13.81 4.15 (3.4 ± 1.3) x 10-3 50 3.007 2.711
2 08 55 21.85 -45 00 36.71 4.19 (3.1 ± 1.2) x 10-3 48 2.730 2.479
3 08 55 30.73 -45 09 29.57 4.11 (2.7 ± 1.2) x 10-3 56 2.675 2.316
4 08 54 40.08 -44 58 06.33 3.97 (3.0 ± 1.3) x 10-3 79 2.851 2.220

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 4FGL J0854.8-4504 Swift-XRT image with known radio, optical and UV sources for 4FGL J0854.8-4504

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 XMMSL2 J085457.8-450729 08 54 57.86 -45 07 28.56 3.53 XMM-NEWTON
2 Unknown 08 55 18.91 -45 02 19.32 5.68 EXOSAT
3 Unknown 08 55 16.66 -44 58 08.04 7.91 EXOSAT
4 ... 08 55 43.44 -45 04 02.28 9.65 EINSTEIN
5 XMMSL2 J085538.2-450842 08 55 38.23 -45 08 42.36 9.75 XMM-NEWTON

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 [PME2013] J0854-4501 08 54 43.01 -45 01 59.16 2.57 AT2FGLUS
[SPT2015] ATCA J0854-4501 08 54 43.01 -45 01 59.16 2.57 FER2FUSRID
MGPS J085442-450147 08 54 42.91 -45 01 48.00 2.75 MGPS2
2 SAO 220663 08 55 14.62 -45 05 31.56 4.70 SAO
PPM 313784 08 55 14.76 -45 05 31.56 4.73 PPM
3 WDS J08553-4503 08 55 18.00 -45 02 60.00 5.32 WDS
4 IY Vel 08 55 19.20 -45 02 30.12 5.67 GCVS
HIP 43807 08 55 19.20 -45 02 30.12 5.67 HIPPARCOS
PPM 313785 08 55 19.22 -45 02 30.12 5.67 PPM
CD-44 4951 08 55 19.25 -45 02 30.48 5.68 ACRS
HR 3562 08 55 19.30 -45 02 30.12 5.68 BSC5P
HD 76566 08 55 19.30 -45 02 30.12 5.68 HIC
SAO 220664 08 55 19.30 -45 02 29.76 5.68 SAO
5 PMN J0854-4457 08 54 54.41 -44 57 55.08 6.49 PMN
6 PGC 3085198 08 54 41.81 -44 57 24.84 7.03 PGC2003
7 TGSSADR J085405.7-450424 08 54 05.71 -45 04 23.88 7.61 GMRTAS150M
MGPS J085405-450423 08 54 05.71 -45 04 23.16 7.62 MGPS2
8 MGPS J085418-451050 08 54 18.41 -45 10 50.88 8.45 MGPS2
TGSSADR J085418.3-451050 08 54 18.31 -45 10 50.88 8.45 GMRTAS150M
9 TGSSADR J085455.5-445547 08 54 55.61 -44 55 46.92 8.63 GMRTAS150M
MGPS J085455-445547 08 54 55.61 -44 55 46.92 8.63 MGPS2
10 MG 265.6+00.1 08 55 32.71 -44 56 31.92 10.99 DIXON
11 PMN J0855-4453 08 55 09.00 -44 53 40.92 11.23 PMN
12 TGSSADR J085431.1-445301 08 54 31.10 -44 53 00.96 11.74 GMRTAS150M
MGPS J085431-445259 08 54 31.20 -44 52 59.16 11.77 MGPS2
13 PMN J0855-4456 08 55 45.10 -44 56 17.88 12.78 PMN
14 MGPS J085537-451603 08 55 37.61 -45 16 03.00 14.54 MGPS2
TGSSADR J085537.6-451604 08 55 37.70 -45 16 05.16 14.56 GMRTAS150M

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