Escaping Radio Emission from Pulsars: Possible Role of Velocity Shear
نویسندگان
چکیده
منابع مشابه
Gravitation wave emission from radio pulsars revisited
We report a new pulsar population synthesis based on Monte Carlo techniques, aiming to estimate the contribution of galactic radio pulsars to the continuous gravitational wave emission. Assuming that the rotation periods of pulsars at birth have a Gaussian distribution, we find that the average initial period is 290 ms. The number of objects with periods equal to or less than 0.4 s, and therefo...
متن کاملEmission altitude in radio pulsars
This paper presents a method of estimation of emission altitudes using observational data-precise measurements of pulse profile widths at low intensity level. The analysis of emission altitudes obtained using this method for a large number of pulsars gives constraints that should be useful for theory of coherent pulsar emission. It seems that radio emission originates at altitudes of about few ...
متن کاملThe Velocity Distribution of Isolated Radio Pulsars
We infer the velocity distribution of radio pulsars based on large-scale 0.4 GHz pulsar surveys. We do so by modelling evolution of the locations, velocities, spins, and radio luminosities of pulsars; calculating pulsed flux according to a beaming model and random orientation angles of spin and beam; applying selection effects of pulsar surveys; and comparing model distributions of measurable p...
متن کاملThe possible companions of young radio pulsars
We discuss the formation of pulsars with massive companions in eccentric orbits. We demonstrate that the probability for a non-recycled radio pulsar to have a white dwarf as a companion is comparable to that of having an old neutron star as a companion. Special emphasis is given to PSR B1820–11 and PSR B2303+46. Based on population synthesis calculations we argue that PSR B1820–11 and PSR B2303...
متن کاملPolar-cap accelerator and radio emission from pulsars
Electric currents j flow along the open magnetic field lines from the polar caps of neutron stars. Activity of a polar cap depends on the ratio α = j/cρGJ, where ρGJ is the corotation charge density. The customary assumption α ≈ 1 is not supported by recent simulations of pulsar magnetospheres and we study polar caps with arbitrary α. We argue that no significant activity is generated on field ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 1997
ISSN: 0004-637X
DOI: 10.1086/310598