X-ray imaging - Supernova remnants

Astronomy and Astrophysics – Astronomy

Scientific paper

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Heao 2, Shock Wave Propagation, Stellar Evolution, Stellar Radiation, Supernova Remnants, X Ray Sources, Black Holes (Astronomy), Gravitational Collapse, Interstellar Space, Neutron Stars, Stellar Models

Scientific paper

Consideration is given to imaging observations of supernova remnants (SNRs) obtained during the first year of the Einstein Observatory's operation. Inferences are drawn regarding models for stellar explosions, remnant evolution, neutron star formation and the interstellar medium. Because the X-ray emission traces the expanding shock boundary and dominates the radiative energy losses of an SNR over much of its lifetime, it can provide data on the possible collapsed remnants of the explosion, such as neutron stars and/or black holes. X-ray emission also allows a supernova shock to be used as a probe of interstellar medium structure. The imaging instrument aboard the Einstein satellite has been used to observe over 30 known Galactic remnants, and a similar number of objects in other galaxies, in the 0.15-4.5 keV band.

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