§  Chandra ACIS bright soft phase data
è  out of time events analysed to recover piled-up spectrum
§  Chandra observations cover turn-off time for soft component
è  less than 6 weeks
§  Very detailed high resolution Chandra LETGS spectrum
è  Study of individual lines: Stongly broadned
è  A blend of many lines/cont. detected in 28-38 Å range
è  Temperatures and densities from H- and He-like triplets
è  Unexpected lack of Fe lines detected
§  Study of all Chandra ACIS and LETGS spectra
è  Evolution of X-ray flux (similar decay rates as for Nova Cyg 1975)
       Vadim Burwitz (MPE)
MSSL, Oct. 24, 2002