Low-frequency observations of giant pulses from ordinary pulsars

Kazantsev, A. N.; Basalaeva, M. Yu.

doi:10.48550/arxiv.2005.07244

Cited by 1 publication

(1 citation statement)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…5). Meanwhile, Kazantsev & Basalaeva (2020) reported on occurrence of strong pulses at frequencies close to 100 MHz, which come predominantly from the leading part of the two-peaked MP component. This is not supported by our observations (Fig.…”

Section: Phase Of Occurrencementioning

confidence: 99%

Dual-frequency single-pulse study of PSR B0950+08

Bilous,

Griessmeier,

Pennucci

et al. 2021

Preprint

View full text Add to dashboard Cite

PSR B0950+08 is a bright non-recycled pulsar whose single-pulse fluence variability is reportedly large. Based on observations at two widely separated frequencies, 55 MHz (NenuFAR) and 1.4 GHz (Westerbork Synthesis Radio Telescope), we review the properties of these single pulses. We conclude that they are more similar to ordinary pulses of radio emission than to a special kind of short and bright Giant Pulses, observed from only a handful of pulsars. We argue that temporal variation of properties of interstellar medium along the line of sight to this nearby pulsar, namely the fluctuating size of decorrelation bandwidth of diffractive scintillation makes important contribution to observed single-pulse fluence variability. We further present interesting structures in the low-frequency single-pulse spectra that resemble the "sad trombones" seen in Fast Radio Bursts (FRBs); although for PSR B0950+08 the upward frequency drift is also routinely present. We explain these spectral features with radius-to-frequency mapping, similar to the model developed by Wang et al. (2019) for FRBs. Finally, we speculate that µs-scale fluence variability of the general pulsar population remains poorly known, and that its further study may bring important clues about the nature of FRBs.

show abstract

Section: Phase Of Occurrencementioning

confidence: 99%