Multifrequency integrated profiles of pulsars
نویسندگان
چکیده
منابع مشابه
A study of multifrequency polarization pulse profiles of millisecond pulsars
We present high signal-to-noise ratio, multifrequency polarization pulse profiles for 24 millisecond pulsars that are being observed as part of the Parkes Pulsar Timing Array project. The pulsars are observed in three bands, centred close to 730, 1400 and 3100 MHz, using a dual-band 10 cm/50 cm receiver and the central beam of the 20-cm multibeam receiver. Observations spanning approximately si...
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We have performed a comparative analysis of the frequency dependence of the profile widths of millisecond and normal pulsars. In this study we combine our 102 MHz observations with data at higher frequencies borrowed from the literature. We find that the profile width of millisecond pulsars remains nearly constant in the frequency range between 102 and 1400 MHz. This is in contrast with what is...
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I review the basic observational properties of accreting millisecond pulsars that are important for understanding the physics involved in formation of their pulse profiles. I then discuss main effects responsible for shaping these profiles. Some analytical results that help to understand the results of simulations are presented. Constraints on the pulsar geometry and the neutron star equation o...
متن کاملPulse profiles of millisecond pulsars and their Fourier amplitudes
Approximate analytical formulae are derived for the pulse profile produced by small hot spots on a rapidly rotating neutron star. Its Fourier amplitudes and phases are calculated. The proposed formalism takes into account gravitational bending of light, Doppler effect, anisotropy of emission, and time delays. Its accuracy is checked with exact numerical calculations.
متن کامل‘Notches’ in the Average Profiles of Bright Pulsars
We discuss the discovery of ‘notch-like’ features in the mean pulse profile of the nearby, bright pulsar B0950+08. We compare these low-level features with those previously seen in the pulse profiles of pulsars J0437−4715 and B1929+10. While J0437−4715 is a binary millisecond pulsar and B0950+08 and B1929+10 are isolated, slow pulsars, all three pulsars are nearby and very bright. Furthermore, ...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2008
ISSN: 0035-8711,1365-2966
DOI: 10.1111/j.1365-2966.2008.13379.x