The Velocity Distribution of Isolated Radio Pulsars
نویسندگان
چکیده
منابع مشابه
The 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 کاملOn the velocity distribution of radio pulsars at birth
We investigate the transverse velocity distribution of young (< 3 Myr) radio pulsars, using pulsar population synthesis techniques. We find that, after taking into account errors in proper motion measurements, an initial velocity distribution that has many more pulsars at low velocities than the distribution proposed by Lyne & Lorimer (1994) can produce a transverse velocity distribution that d...
متن کاملBirth and Evolution of Isolated Radio Pulsars
We investigate the birth and evolution of Galactic isolated radio pulsars. We begin by estimating their birth space velocity distribution from proper motion measurements of Brisken et al. (2002, 2003). We find no evidence for multimodality of the distribution and favor one in which the absolute one-dimensional velocity components are exponentially distributed and with a three-dimensional mean v...
متن کاملThe radio luminosity distribution of pulsars in 47 Tucanae
We have used the Australia Telescope Compact Array to seek the integrated radio flux from all the pulsars in the core of the globular cluster 47 Tucanae. We have detected an extended region of radio emission and have calibrated its flux against the flux distribution of the known pulsars in the cluster. We find the total 20-cm radio flux from the cluster's pulsars to be S = 2.0 ± 0.3mJy. This im...
متن کاملKinematics of Radio Pulsars
A very good fraction of stars in the sky are believed to be in binary (or multiple) systems. Therefore, we expect a good fraction of pulsars to have originated in binary systems. However, observations of pulsars have shown that most of the pulsars are not in binary system now. This would imply that these pulsars must have become solitary after the disruption of their progenitor binary system du...
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: 2002
ISSN: 0004-637X,1538-4357
DOI: 10.1086/338805