Abstract Title: *
AN ALGORITHM FOR TYPE III SOLAR RADIO BURSTS RECOGNITION

Authors: *
S. Vidojević (1), M. Dražić (2), M. Maksimovic (3) and M. Abada-Simon(3)
(1)State University of Novi Pazar, Department of Mathematics,
Vuka Karadzica bb, 36300 Novi Pazar , Serbia
(2)Faculty of Mathematics, Studentski trg 16, 11000 Belgrade, Serbia
(3)LESIA, Observatoire de Paris, CNRS, Universite Pierre et Marie Curie et Paris-Diderot,
5 place Jules Janssen, 92195 MEUDON, cedex, France

Institution: *
State University of Novi Pazar, Department of Mathematics

Preferred format: *
Oral

Abstract Text: *
Radio spectrograph instruments are used to monitor the Sun’s coronal emissions of plasma that
travel with solar wind towards the Earth. Dynamical radio spectra are detected and recorded by
radio observatories in space and in vicinity of the Earth producing a huge amount of data. The
amount of astronomical data is growing at a rate of 2 TB per day presently and constantly
raises. Therefore, an automatic detection of potentially dangerous event travelling toward the
Earth in that vast amount of data is extremely important. The focus of this work is on the
automated detection of Type III radio bursts. The physical mechanism causing this type of
bursts is related to energetic electrons propagating along magnetic field lines in the solar
corona. As these beams escape upward into interplanetary space, away from the solar corona,
they encounter decreasing plasma density which results in a decrease in the radio frequency
which gives the Type III bursts their characteristic decrease in frequency with time. Data from
WIND spacecraft are used to test and validate the method. The development of an automated
detection was motivated by the ability to rapidly find solar radio events in archives. Type III radio
bursts occur frequently so the database of these events is quite large. An algorithm for
identification of shapes of type IIIs embedded in complex structure of many other shapes and
noisy background is developed.