next up previous contents index
Next: Supernova Explosions Up: No Title Previous: X-ray Luminosity Evolution

Cosmic Rays and Evolution of Binary

The origin of cosmic rays (CR) (especially of very high energies, > tex2html_wrap_inline10286  eV) until now has been one of the unsolved problems in modern astrophysics. It is unclear as yet whether one universal mechanism of relativistic particle formation in our Galaxy operates or not, and if there are several different mechanisms, what is their relative contribution to CR formation.

The main observational properties of the CR are: (1) a power law spectrum tex2html_wrap_inline11918 (tex2html_wrap_inline11920) covering a wide range of energies from several MeV up to tex2html_wrap_inline8945tex2html_wrap_inline11924 eV, with a slight ``knee-like'' feature near tex2html_wrap_inline10286 eV; and (2) the total energy required to produce the observed galactic CR flux is of the order of tex2html_wrap_inline11127 erg stex2html_wrap_inline8853 .

Among the most popular postulated mechanisms of CR formation are:

In this section, we focus on two mechanisms which are directly connected to stellar evolution, namely, supernova explosions  and rapidly rotating magnetized NS.

Mike E. Prokhorov
Sat Feb 22 18:38:13 MSK 1997