منابع مشابه
Shell-type Supernova Remnants
The role of Supernova Remnants (SNRs) for the production of the Galactic Cosmic Rays is reviewed from the point of view of theory and very high energy gamma-ray experiments. The point is made that theory can describe young SNRs very well, if the evidence from the synchrotron emission is used to empirically determine several parameters of the theory, and thus theory can predict the relative cont...
متن کاملSupernova Remnants and GLAST
It has long been speculated that supernova remnants represent a major source of cosmic rays in the Galaxy. Observations over the past decade have ceremoniously unveiled direct evidence of particle acceleration in SNRs to energies approaching the knee of the cosmic ray spectrum. Nonthermal X-ray emission from shell-type SNRs reveals multi-TeV electrons, and the dynamical properties of several SN...
متن کاملNeutron Stars in Supernova Remnants
In the following, we shall briefly summarize some facts and ideas concerning the presence of neutron stars in Supernova remnants. While sources similar to the Crab Nebula require the presence of a central energetic object, shell-type remnants such as Cas A are compatible with the presence of neutron stars releasing a weak relativistic wind. Supernova remnants are usually classified into two ext...
متن کاملSupernova Remnants in Molecular Clouds
Massive (>∼8 M ) stars may end their lives in the molecular clouds in which they were born. O-type stars probably have sufficient photoionizing radiation and wind power to clear a region > 15 pc in radius of molecular material. Early B stars (B1–B3 on the main sequence, or 8 − 12 M stars) are not capable of this and may interact directly with molecular gas. Molecular clouds are known to be clum...
متن کاملRadio Observations of Supernova Remnants
Supernovae release an enormous amount of energy into the interstellar medium. Their remnants can observationally be traced up to several ten-thousand years. So far more than 230 Galactic supernova remnants (SNRs) have been identified in the radio range. Detailed studies of the different types of SNRs give insight into the interaction of the blast wave with the interstellar medium. Shock acceler...
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ژورنال
عنوان ژورنال: Progress of Theoretical Physics
سال: 1980
ISSN: 0033-068X,1347-4081
DOI: 10.1143/ptp.64.1587