Subsecond (0.1 s) Pulsations in the 11 April 2001 Radio Event

0353849 - ASÚ 2011 RIV NL eng J - Journal Article
Karlický, Marian - Zlobec, P. - Mészárosová, Hana
Subsecond (0.1 s) Pulsations in the 11 April 2001 Radio Event.
Solar Physics. Roč. 261, č. 2 (2010), s. 281-294. ISSN 0038-0938. E-ISSN 1573-093X
R&D Projects: GA AV ČR IAA300030701
Institutional research plan: CEZ:AV0Z10030501
Keywords : Sun * flares * data analysis * radio radiation
Subject RIV: BN - Astronomy, Celestial Mechanics, Astrophysics
Impact factor: 3.386, year: 2010

Radio pulsations observed during the 11 April 2001 event at six single frequencies (237, 327, 408, 610, 1420, and 2695 MHz) by the Trieste radio-polarimeter with a time resolution 10 ms are analyzed. A wavelet analysis method as well as time delay and polarization measurements are used. Both methods reveal pulsations with a period of about 0.1 s at all observed frequencies. Furthermore, the 0.1 s pulsations drift toward higher and lower frequencies, starting at about 1420 MHz. The polarization of pulsations increases with frequency and time.
Permanent Link: http://hdl.handle.net/11104/0192979