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 J1824.7+2403

Field

Detected Excesses

Swift-XRT image of the field for 4FGL J1824.7+2403 Swift-XRT detections in the field for 4FGL J1824.7+2403

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 18 24 27.26 +24 19 21.08 7.27 (1.8 ± 0.6) x 10-3 11 2.769 3.136
2 18 24 32.40 +24 13 36.15 5.53 (2.4 ± 0.8) x 10-3 21 3.116 3.015

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 18 24 58.09 +23 55 39.91 6.78 (1.7 ± 0.7) x 10-3 9 2.609 2.427
2 18 24 28.39 +24 16 43.89 7.71 (1.2 ± 0.5) x 10-3 8 2.274 2.400
3 18 24 08.84 +24 06 50.28 6.31 (1.3 ± 0.6) x 10-3 16 2.574 2.270

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1824.7+2403 Swift-XRT image with known radio, optical and UV sources for 4FGL J1824.7+2403

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1RXS J182426.9+240535 18 24 26.90 +24 05 35.16 4.44 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 HD 342098 18 24 42.96 +24 03 33.12 0.55 HDEC
2 NVSS J182457+240347 18 24 57.31 +24 03 47.88 2.83 NVSS
TGSSADR J182457.4+240348 18 24 57.41 +24 03 47.88 2.87 GMRTAS150M
3 HD 342096 18 24 45.84 +24 07 13.44 3.34 HDEC
4 HD 342099 18 24 58.68 +24 01 58.44 3.69 HDEC
5 NVSS J182504+240437 18 25 04.70 +24 04 37.92 4.59 NVSS
TGSSADR J182504.8+240436 18 25 04.80 +24 04 36.84 4.62 GMRTAS150M
6 NVSS J182503+240939 18 25 03.91 +24 09 39.96 7.23 NVSS
TGSSADR J182503.9+240943 18 25 04.01 +24 09 42.84 7.28 GMRTAS150M
7 NVSS J182516+240223 18 25 16.61 +24 02 24.00 7.39 NVSS
8 NVSS J182411+240402 18 24 11.71 +24 04 01.92 7.58 NVSS
9 NVSS J182409+240150 18 24 09.19 +24 01 50.16 8.40 NVSS
10 NVSS J182432+241210 18 24 32.81 +24 12 10.08 8.73 NVSS
11 HD 342095 18 25 18.55 +24 08 08.16 8.79 HDEC
12 HD 342100 18 24 58.25 +23 55 02.28 9.36 HDEC
13 NVSS J182521+235747 18 25 21.91 +23 57 47.88 10.43 NVSS
14 NVSS J182532+240318 18 25 32.50 +24 03 19.08 10.90 NVSS
15 HD 342198 18 25 33.19 +24 05 27.60 11.14 HDEC
PPM 107223 18 25 33.19 +24 05 27.60 11.14 PPM
BD+24 3412 18 25 33.22 +24 05 27.96 11.15 ACRS
TGSSADR J182529.6+235501 18 25 29.59 +23 55 00.84 13.54 GMRTAS150M
16 NVSS J182529+235459 18 25 29.59 +23 55 00.12 13.55 NVSS

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