Superdispersion delay of the meter-wave pulses of PSR 0809 + 74

Journal Article · Fri Feb 01 04:00:00 EST 1985 · Sov. Astron. Lett. (Engl. Transl.); (United States)

OSTI ID:5799750

Shitov, IU P; Malofeev, V M

The integrated pulse profile of the pulsar 0809 + 74 exhibits a time delay at meter wavelengths in excess of that attributable to dispersion in the interstellar medium. This superdisperion delay increases sharply toward lower frequencies; observations at Pushchino show that it reaches abut 150 msec at a frequency of 30 MHz. The effect is interpreted as a bending of the pulsar's effective radiation cone, most likely due to twisting of the magnetic field lines through electromagnetic braking of the rotation. The low-frequency (less than about 30 MHz) emission would then be generated high in the magnetosphere, at levels greater than about 10 to 9th cm, comparable with the light-cylinder radius. 10 references.

• Research Organization: Fizicheskii Institut, Moscow, USSR
• OSTI ID: 5799750
• Journal Information: Sov. Astron. Lett. (Engl. Transl.); (United States), Journal Name: Sov. Astron. Lett. (Engl. Transl.); (United States) Vol. 11; ISSN SALED
• Country of Publication: United States
• Language: English

Related Subjects

640103* -- Astrophysics & Cosmology-- Quasi-Stellar
Radio
& X-Ray Sources-- (-1987)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COSMIC RADIO SOURCES
EARTH ATMOSPHERE
EARTH MAGNETOSPHERE
ELECTROMAGNETIC RADIATION
MAGNETIC FIELDS
MOTION
PULSARS
PULSES
RADIATIONS
RADIOWAVE RADIATION
ROTATION
TIME DELAY
WAVE PROPAGATION