Simultaneous, single pulse observations of radio pulsars: Observing single pulses at a broad frequency range
RADIO PULSARS, PROCEEDINGS 302 (2003) 195-198
Simultaneous single-pulse observations of radio pulsars: II. Orthogonal polarization modes in PSR B1133+16
ArXiv astro-ph/0205550 (2002)
Abstract:
In this paper, we present a study of orthogonal polarization modes in the radio emission of PSR B1133+16, conducted within the frame of simultaneous, multi-frequency, single-pulse observations. Simultaneously observing at two frequencies (1.41 GHz and 4.85 GHz) provides the means to study the bandwidth of polarization features such as the polarization position angle. We find two main results. First, that there is a high degree of correlation between the polarization modes at the two frequencies. Secondly, the modes occur more equally and the fractional linear polarization decreases towards higher frequencies. We discuss this frequency evolution and propose propagation effects in the pulsar magnetosphere as its origin.Simultaneous single-pulse observations of radio pulsars II. Orthogonal polarization modes in PSR B1133+16
Astronomy and Astrophysics 391:1 (2002) 247-251
Abstract:
In this letter, we present a study of orthogonal polarization modes in the radio emission of PSR B1133+16, conducted within the frame of simultaneous, multi-frequency, single-pulse observations. Simultaneously observing at two frequencies (1.41 GHz and 4.85 GHz) provides the means to study the bandwidth of polarization features such as the polarization position angle. We find two main results. First, that there is a high degree of correlation between the polarization modes at the two frequencies. Secondly, the modes occur more equally and the fractional linear polarization decreases towards higher frequencies. We discuss this frequency evolution and propose propagation effects in the pulsar magnetosphere as its origin.Simultaneous single-pulse observations of radio pulsars I. The polarization characteristics of PSR B0329+54
Astronomy and Astrophysics 379:1 (2001) 270-278
Abstract:
We present the first results from a programme of multi-frequency simultaneous single pulse observations carried out as part of the European Pulsar Network. We detail the main data analysis methods and apply them to simultaneous observations of the strong pulsar B0329+54 at 1.4 and 2.7 GHz using the Jodrell Bank and Effelsberg radio telescopes respectively. The pulses at different frequencies are highly correlated in their total intensity, as seen in previous experiments, and generally show consistent position angles of the linearly polarized component. In contrast, the circularly polarized emission sometimes shows clear differences between pulses received at different frequencies. These results are unexpected and warrant further follow-up studies to interpret them in the context of the intrinsic bandwidth of pulsar radiation.Simultaneous single-pulse observations of radio pulsars: I. The polarization characteristics of PSR B0329+54
ArXiv astro-ph/0109507 (2001)