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.

4FGL J0854.8-4504

Field

Detected Excesses

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

Detected Excesses (SNR(Sosta) > 3.0)

#	R.A. (J2000)	Dec. (J2000)	Pos. Error (")	Rate (cts/s)	Counts	SNR (Detect)	SNR (Sosta)
1	08 54 41.70	-44 59 42.90	3.76	(2.3 ± 0.7) x 10^-3	164	4.054	3.121

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 54 49.96	-45 11 31.31	3.77	(2.0 ± 0.7) x 10^-3	120	3.066	2.859
2	08 54 42.70	-45 14 38.70	3.90	(1.3 ± 0.5) x 10^-3	53	2.939	2.386
3	08 54 29.05	-45 00 27.32	3.78	(1.5 ± 0.7) x 10^-3	147	3.018	2.099
4	08 55 31.98	-45 09 41.96	3.71	(1.1 ± 0.7) x 10^-3	145	3.275	1.615

X-Ray and Gamma Ray Catalogs

More Catalogs

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