Forbidden coronal iron line images of Puppis A - cloud evaporation or shocked cloud
Calibrated CCD images of the eastern X-ray knot in Puppis A, made in the forbidden red and green coronal Fe lines, are discussed. They show the high-temperature gas to have a rich morphology, with the scale of some features approaching the 2.6 arcsec resolution of the data. The pictures have been compared with an Einstein HRI soft X-ray image; there is close correspondence in the position and size of structures seen in the optical forbidden lines and in the X-rays. Located near the shock front a cloud of about 0.4 pc x 0.9 pc dimension shines brilliantly in the 5303 A line. To test the hypothesis that the cloud might be evaporating into the remnant interior, the 5303 A and 6374 A intensity distributions expected for a steady state, one-fluid evaporatig model have been computed. 28 references.
- Research Organization:
- Michigan Univ., Ann Arbor; NASA, Goddard Space Flight Center, Greenbelt, MD
- OSTI ID:
- 6270373
- Journal Information:
- Astrophys. J.; (United States), Vol. 314
- Country of Publication:
- United States
- Language:
- English
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Observational study of ion-electron equilibration and of cloud evaporation in supernova remnants under the HEAO-2 guest investigator program. Final project report, 1 June 1985-30 September 1986
Related Subjects
GENERAL PHYSICS
SUPERNOVA REMNANTS
MORPHOLOGY
X RADIATION
COSMIC GASES
EVAPORATION
IRON
MAPS
NEBULAE
SHOCK WAVES
WAVE PROPAGATION
COSMIC RADIO SOURCES
ELECTROMAGNETIC RADIATION
ELEMENTS
FLUIDS
GASES
IONIZING RADIATIONS
METALS
PHASE TRANSFORMATIONS
RADIATIONS
TRANSITION ELEMENTS
640102* - Astrophysics & Cosmology- Stars & Quasi-Stellar
Radio & X-Ray Sources