Radiation pattern of the isolated pulsar PSR B1828-11
نویسندگان
چکیده
منابع مشابه
Radiation pattern of the isolated pulsar PSR B 1828 - 11
Based on the free precession model of the isolated pulsar PSR B1828-11, Link & Epstein (2001) showed that the observed pulse durations require the radio beam to have a non-standard shape: the beam duration is larger for beam sweeps farthest from the dipole axis. In their analysis they assumed that the actual precession period is ≃ 500 d. Recent theoretical studies suggested that the actual prec...
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Analysis of both pulse timing and pulse shape variations of the isolated pulsar PSR B1828-11 shows highly correlated and strong Fourier power at periods ≃ 1000, 500, 250, and 167 d (Stairs et al. 2000). The only description based on a free precession of star’s rigid crust coupled to the magnetic dipole torque, explains the 500component, as the fundamental Fourier frequency, with its harmonic 25...
متن کاملHigh-resolution Observations of Psr B1828−11
We present high-time-resolution observations of the young precessing pulsar B1828−11, which yield clues to the true beam shape and the fundamental precession period.
متن کاملPSR B1828−11: a precession pulsar torqued by a quark planet?
Aims. The pulsar PSR B1828−11 has long-term, highly periodic and correlated variations in both pulse shape and the rate of slow-down. This phenomenon may provide evidence for precession of the pulsar as suggested previously within the framework of free precession as well as forced one. Based on the presumption of forced precession, we propose a quark planet model to this precession phenomenon i...
متن کاملJa n 20 01 Precession Interpretation of the Isolated Pulsar PSR B 1828 - 11
Pulse timing of the isolated pulsar PSR B1882-11 shows strong Fourier power at periods ≃ 1000, 500 and 250 d, correlated with changes in the pulse profile (Stairs, Lyne & Shemar 2000). We study the extent to which these data can be explained by precession of the star's rigid crust coupled to the magnetic dipole torque. We find that the correlated changes in the pulse duration and spin period de...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2003
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:20021755