Thermal X-ray emission from SNe
ß
Low mass loss rate, high velocity wind,
low velocity ejecta (< 30,000 km/s)
L
~
10
37
erg/s
f
r
(H)
S
Hard X-rays negligible
Soft X-rays always visible
Optically thin
cool shell
SN 2002ap
Type Ib/c