Analysis and discussion of a sample of 25 gigahertz-peaked spectra pulsars

Kijak, J.; Lewandowski, Wojciech; Rożko, Karolina

doi:10.1017/s1743921317008298

Cited by 1 publication

(1 citation statement)

References 8 publications

(7 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These observations strongly prove the turn-over spectra of pulsar is caused by its surroundings, i.e., the free-free absorption is the main mechanism forming the turnover spectra. Kijak further probed into the origin of interstellar medium, which may be the supernova remnants, hydrogen ionization region, pular wind nebula [6].…”

Section: Introductionmentioning

confidence: 99%

Statistical Research on Pulsars with the Gigahertz-Peaked Spectra

Cai

Wang

2022

Advances in Transdisciplinary Engineering

View full text Add to dashboard Cite

The pulsar’s radio spectra in the high frequency shows the power law form in general, but people has also found 23 pulsars with the turn-over spectra peaking near GHz, i.e., the Gigahertz-peaked spectrum (GPS) pulsars. We launch the statistical research on these GPS pulsars, and find the peak frequency of 73.9% GPS pulsars in the sample is between 0.5 GHz and 1.0 GHz. The magnetic star has the higher peak frequency relative to other GPS pulsars, whose average peak frequency is 3.35GHz. The average spectral index of GPS pulsars is -1.33 which is higher than ones of ordinary pulsars. This phenomenon may be caused by the interstellar medium absorption for the pulsar’s radiation in the low frequency band. The statistical average of the dispersion measure of GPS pulsars is 348 pc cm-3, which is higher than the ones of ordinary pulsars. We also find the strong positive correlation between the period and dispersion measure of GPS pulsars, which imply that the interstellar medium may cause the pulsar’s rotation slow down.

show abstract

Section: Introductionmentioning

confidence: 99%