Origin of the hard x-ray pulsations during solar flares

Journal Article · Mon Mar 01 04:00:00 EST 1982 · Sov. Astron. Lett. (Engl. Transl.); (United States)

OSTI ID:6512227

Zaitsev, V V; Stepanov, A V

The quasiperiodic (roughly-equal1/sup s/) pulsations of flare hard x rays may result from magnetohydrodynamic oscillations of the initial energy-release site near the top of the flare loop. The rising gas-kinetic pressure there will produce a magnetic trap roughly-equal2'' in diameter. MHD oscillations in the trap triggered by the impulsive energy release will modulate the flux of fast electrons, which will interact with the sense atmosphere at the flare-loop footpoints. As a result the intensity of the hard x rays emitted there will pulsate. The pulsation period, quality, and modulation depth convey information on the parameters of the initial energy-release region.

• Research Organization: Institute of Applied Physics, USSR Academy of Sciences, Gor'kii
• OSTI ID: 6512227
• Journal Information: Sov. Astron. Lett. (Engl. Transl.); (United States), Journal Name: Sov. Astron. Lett. (Engl. Transl.); (United States) Vol. 8:2; ISSN SALED
• Country of Publication: United States
• Language: English

Related Subjects

640104* -- Astrophysics & Cosmology-- Solar Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CLOSED CONFIGURATIONS
ELECTROMAGNETIC RADIATION
ELECTRONS
ELEMENTARY PARTICLES
ENERGY
FERMIONS
FLUID MECHANICS
HARD X RADIATION
HYDRODYNAMICS
HYDROMAGNETIC WAVES
IONIZING RADIATIONS
LEPTONS
MAGNETIC FIELD CONFIGURATIONS
MAGNETOHYDRODYNAMICS
MECHANICS
PLASMA PRESSURE
PULSATIONS
RADIATIONS
SOLAR ACTIVITY
SOLAR FLARES
SOLAR X-RAY BURSTS
VARIATIONS
X RADIATION