Line emission in shocks and PDR - Observatoire de Paris
Line emission in shocks and PDR - Observatoire de Paris
Line emission in shocks and PDR - Observatoire de Paris
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Magnetic molecular <strong>shocks</strong><br />
Low ionisation, magnetized<br />
medium ion/neutral<br />
<strong>de</strong>coupl<strong>in</strong>g Cont<strong>in</strong>uous<br />
(C-type) « shock »<br />
Magnetic precursor<br />
Viscous J-type front<br />
Long time-scales to reach<br />
full C steady-state<br />
t ~ 10 4 yrs x (10 4 cm-3/nH)<br />
Young <strong>shocks</strong> comb<strong>in</strong>e C-<br />
precursor + viscous J-front<br />
(Chieze et al. 1998; Lesaffre et al.<br />
2004)<br />
« Age typical 1000 » yrs stationary : C+J structure C-shock nH<br />
nH = 10 4 cm-3, Vs = 25 km/s B = 100µ G.<br />
Dusty04 - <strong>Paris</strong>, October 2004
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