Subsecond (0.1 s) Pulsations in the 11 April 2001 Radio Event |
| |
Authors: | M Karlický P Zlobec H Mészárosová |
| |
Institution: | 1.Astronomical Institute,Academy of Sciences of the Czech Republic,Ond?ejov,Czech Republic;2.INAF?–?Trieste Astronomical Observatory,Trieste,Italy |
| |
Abstract: | 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. The remarkable fact that the detected 0.1 s period of pulsations does not
depend on frequency in a very broad frequency range is discussed in terms of existing models of pulsations. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|