TRACKING TYPE III RADIO BURST SOURCES IN THE SOLAR CORONA BY HELIOGRAPHIC MEANS

Автор(и)

  • A. A. Koval Institute of Radio Astronomy of NAS of Ukraine, Україна
  • A. A. Stanislavsky Institute of Radio Astronomy of NAS of Ukraine, Україна
  • A. A. Konovalenko Institute of Radio Astronomy of NAS of Ukraine, Україна
  • Ya. S. Volvach Institute of Radio Astronomy of NAS of Ukraine, Україна

DOI:

https://doi.org/10.18524/1810-4215.2014.27.81247

Ключові слова:

Sun, radio emission, bursts, radio heliograph, UTR-2 radio telescope

Анотація

We present the preliminary results of heliographic measurements of solar  type  III  radio  bursts  in  the lowfrequency range (16.5-33 MHz) using  the UTR-2  radio heliograph. The  radio  astronomy  tools  permit  us  to  obtain two-dimensional spatial structures of burst sources  in  dependence of frequency and time. Each heliogram consists of  40 pixels (beams) as a result of the serial sweep in UV-plane wherein signals of each beam  are recorded in  a  dynamic spectrum with both high temporal (~ 2.482 ms) and top spectral  (~ 4 kHz)  resolutions. The  rate  of  output  heliograph  is one image per 3 seconds. Over a session in April, 2013 many type III radio and IIIb-III bursts were observed. On the heliograms the  source motion  direction in  the  upper  corona  is clearly detectable. The heliogram features are discussed. 

Посилання

Abranin E.P. et al.: 1976, SvA, 19, 602.

Abranin E.P. et al.: 1990, SvA, 34, 74.

Benz A.O.: 2009, LanB, 4B, 148.

Chen H.S., Shawhan S.D.: 1978, Sol.Phys., 57, 205.

Konovalenko A.A. et al.: 2012, RPRA, 3, 1.

Konovalenko A.A. et al.: 2013, Exp. Astr., 36, 137.

Melnik V.N. et al.: 2004, Sol.Phys., 222, 151.

Morosan D.E. et al.: 2014, A&A, 568, A67.

Stanislavsky A.A. et al.: 2011, RPRA, 2, 197.

Stanislavsky A.A. et al.: 2013, AN, 334, 1086.

Subramanian P., Dere K.P.: 2001, ApJ, 561, 372.

Wild J.P.: 1963, IAU Symp. Proc., 16, 115.

##submission.downloads##

Опубліковано

2014-10-26

Номер

Розділ

Статті