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 J0444.8-3514

Field

Detected Excesses

Swift-XRT image of the field for 4FGL J0444.8-3514 Swift-XRT detections in the field for 4FGL J0444.8-3514

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 04 45 30.76 -35 15 05.81 5.70 (2.3 ± 0.6) x 10-3 21 3.884 3.824
2 04 44 28.65 -35 20 51.80 5.53 (2.1 ± 0.6) x 10-3 21 3.717 3.531
3 04 45 17.41 -35 28 20.49 6.41 (1.6 ± 0.5) x 10-3 13 3.098 3.206

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 04 46 10.69 -35 24 52.82 6.21 (1.4 ± 0.5) x 10-3 13 3.261 2.820
2 04 45 03.11 -35 24 28.74 5.89 (1.6 ± 0.6) x 10-3 14 2.782 2.656
3 04 44 28.63 -35 23 41.53 6.41 (10 ± 4) x 10-4 10 2.257 2.296
4 04 44 48.93 -35 18 24.90 6.12 (1.1 ± 0.5) x 10-3 14 2.352 2.287
5 04 44 43.09 -35 23 16.29 6.12 (9 ± 4) x 10-4 14 2.522 2.163
6 04 44 36.05 -35 28 28.92 5.76 (8 ± 4) x 10-4 13 2.619 2.005

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 4FGL J0444.8-3514 Swift-XRT image with known radio, optical and UV sources for 4FGL J0444.8-3514


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
GLEAM J044427-351317 04 44 27.70 -35 13 18.12 4.51 GLEAMEGCAT
SUMSS J044427-351317 04 44 27.10 -35 13 17.04 4.63 SUMSS
1 NVSS J044426-351322 04 44 26.81 -35 13 23.16 4.68 NVSS
2 PGC 650418 04 44 45.19 -35 19 10.92 5.17 PGC2003
3 PGC 651499 04 44 20.71 -35 14 18.96 5.88 PGC2003
4 NVSS J044422-351637 04 44 22.10 -35 16 36.84 6.14 NVSS
GLEAM J044438-352121 04 44 38.90 -35 21 21.96 7.59 GLEAMEGCAT
5 NVSS J044438-352125 04 44 38.30 -35 21 24.84 7.67 NVSS
6 NVSS J044530-351503 04 45 30.79 -35 15 03.96 8.50 NVSS
QORG J044530.8-351507 04 45 30.79 -35 15 06.84 8.50 QORGCAT
7 NVSS J044534-351729 04 45 34.61 -35 17 29.04 9.82 NVSS
GLEAM J044534-351726 04 45 34.70 -35 17 26.88 9.82 GLEAMEGCAT
SUMSS J044534-351729 04 45 34.61 -35 17 30.12 9.82 SUMSS
TGSSADR J044534.7-351732 04 45 34.80 -35 17 33.00 9.87 GMRTAS150M
8 SAO 195272 04 45 33.36 -35 20 45.60 11.17 SAO
CD-35 1912 04 45 33.46 -35 20 48.48 11.21 ACRS
PPM 280633 04 45 33.50 -35 20 48.48 11.22 PPM
SUMSS J044417-350430 04 44 17.40 -35 04 30.00 11.61 SUMSS
9 NVSS J044417-350429 04 44 17.40 -35 04 28.92 11.63 NVSS
GLEAM J044417-350422 04 44 17.71 -35 04 22.08 11.70 GLEAMEGCAT
10 PGC 649002 04 44 51.00 -35 25 53.04 11.80 PGC2003
11 PGC 654109 04 44 23.90 -35 02 24.00 12.80 PGC2003
GLEAM J044518-352540 04 45 18.50 -35 25 41.16 13.01 GLEAMEGCAT
12 NVSS J044518-352544 04 45 18.60 -35 25 45.12 13.08 NVSS
AT20G J044518-352545 04 45 18.50 -35 25 45.84 13.09 AT20G
SUMSS J044518-352545 04 45 18.60 -35 25 45.12 13.09 SUMSS
CRATES J044519-352541 04 45 18.50 -35 25 45.84 13.09 CRATES
CRATES J044519-352541 04 45 18.50 -35 25 45.84 13.10 CRATES
TXS 0443-355 04 45 18.50 -35 25 45.84 13.10 TEXAS
QORG J044518.6-352546 04 45 18.60 -35 25 45.84 13.10 QORGCAT
PMN J0445-3525 04 45 19.51 -35 25 41.16 13.11 PMN
TGSSADR J044518.4-352549 04 45 18.41 -35 25 49.08 13.13 GMRTAS150M
MWACS J0445.3-3525 04 45 20.59 -35 25 45.84 13.29 MWACS
13 PGC 654163 04 44 01.30 -35 02 09.96 15.46 PGC2003

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