High-resolution Observations of Psr B1828−11
نویسندگان
چکیده
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.
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...
متن کاملar X iv : a st ro - p h / 02 05 18 0 v 2 1 5 M ay 2 00 2 On the precession of the isolated pulsar PSR B 1828 - 11
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, and 250 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 500-component, as the fundamental Fourier frequency, with its harmonic 250-co...
متن کاملar X iv : a st ro - p h / 02 05 18 0 v 3 2 9 Ju l 2 00 2 On the precession of the isolated pulsar PSR B 1828 - 11
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 500-component, as the fundamental Fourier frequency, with its harmonic 2...
متن کاملComparing models of the periodic variations in spin-down and beamwidth for PSR B1828−11
We build a framework using tools from Bayesian data analysis to evaluate models explaining the periodic variations in spin-down and beamwidth of PSR B1828−11. The available data consist of the time-averaged spin-down rate, which displays a distinctive double-peaked modulation, and measurements of the beamwidth. Two concepts exist in the literature that are capable of explaining these variations...
متن کاملar X iv : a st ro - p h / 02 05 18 0 v 1 1 3 M ay 2 00 2 On the precession of the isolated pulsar PSR B 1828 - 11
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, and 250 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 500-component, as the fundamental Fourier frequency, with its harmonic 250com...
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