Solar type III bursts with high‐frequency cut‐off
نویسندگان
چکیده
منابع مشابه
A stochastic model for solar type III bursts
A stochastic model for type III bursts is introduced, discussed, and compared to observations. The active region is assumed to be inhomogeneous, with a large number of emerging magnetic fibers. At their bases, random energy release events take place, in the course of which electrons are accelerated, travel along the fibers and eventually undergo the bump-ontail instability. In the non-linear re...
متن کاملNonlinear generation of type III solar radio bursts by the hybrid modulational instability
An improvedmodel of the fundamental plasma emission of type III solar radio bursts is presented. It is shown that nonlinear conversion of a traveling Langmuir pump wave into an electromagnetic wave can occur via either convective or absolute hybrid modulational instabilities, resulting from the coupling of two wave triplets, with the Langmuir pump wave and ion-acoustic daughter wave common to b...
متن کاملIn situ detection of strong Langmuir turbulence processes in solar type III radio bursts
[1] The high time resolution observations obtained by the WAVES experiment of the STEREO spacecraft in solar type III radio bursts show that Langmuir waves often occur as intense localized wave packets. These wave packets are characterized by short durations of only a few ms and peak intensities, which well exceed the supersonic modulational instability (MI) thresholds. These timescales and pea...
متن کاملStopping Frequency of Type III Solar Radio Bursts in Expanding Magnetic Flux Tubes
Aims. Understanding the properties of type III radio bursts in the solar corona and interplanetary space is one of the best ways to remotely deduce the characteristics of solar accelerated electron beams and the solar wind plasma. One feature of all type III bursts is the lowest frequency they reach (or stopping frequency). This feature reflects the distance from the Sun that an electron beam c...
متن کاملKilometre-wave radio observations of solar type III bursts by Ulysses compared with decametre-wave observations from the Earth
Observations of solar type III bursts, made at kilometric frequencies by the radio receiver of the Ulysses Unified Radio and Plasma Wave (URAP) investigation, are compared with simultaneous observations, made at decametric frequencies at the Nançay Radio Astronomy Station of the ParisMeudonObservatory, during the period following the spacecraft encounter with Jupiter until the south solar polar...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Astronomische Nachrichten
سال: 2017
ISSN: 0004-6337,1521-3994
DOI: 10.1002/asna.201613141