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Model | RA(°) | DEC(°) | Semi Major Axis (°) | Semi Minor Axis (°) | Pos.Ang.(°) |
283,990 | 1,355 | 0,300 | 0,190 | 327,000 | |
Pass 6 | 284.015(+/-0.004) | 1.392(+/-0.005) | 0.335(+0.117 -0.086) | 0.207 (+0.023 -0.021) | 330+/- 25 |
Pass 7 | 284.000(+/-0.006) | 1.374(+/-0.006) | 0.332(+0.109/-0.079) | 0.205 (+0.021/-0.017) | 327 +/-22 |
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Marie-Helene searched for pulsation concidering 43 pulsars in 3° around the HESS position but found no pulsed emission from PSR J1856+0245. H-Test <<2. 
Fig.6 TS map above 10GeV using Pass6_V11. HESS J1857 is not included in the model. white contours are those obtained using HESS data. Cyan : Pulsars monitored by radio-telescopes. Green : Other pulsars (from the ATNF database)
Only one good candidate was found : PSR J1856+0113 located in W44 :
Fig. 7. Light curves and H-Test obtained looking at PSR J1856+0113 above 50 MeV and 300MeV.
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Fig. 8. Residual TSMap in which HESS J1857 is not fitted. Pass 6 analysis. + HESS contours
Fig 9. Residual TSMap in which HESS J1857 is not fitted. Pass 6 analysis. + HESS contours. Green crosses represents 2FGL sources.
Spectral analysis
Bibliography :
(1) Abdo et al., Science, 327, 1103-1106, 2010