Publication Date:
2011-08-19
Description:
It is known from laboratory experiments that double layers can form in plasmas, usually in the presence of an electric current. It is argued that a double layer may be present in the accretion column of a neutron star in a binary system. It is suggested that the double layer may be the predominant deceleration mechanism for the accreting ions, especially for sources with X-ray luminosities of less than about 10 to the 37th erg/s. Previous models have involved either a collisionless shock or an assumed gradual deceleration of the accreting ions to thermalize the energy of the infalling matter.
Keywords:
ASTROPHYSICS
Type:
Astrophysical Journal, Part 1 (ISSN 0004-637X); 305; 759-766
Format:
text