|
|||||
|
|
The possible companions of young radio pulsars |
|
| Authors: | Simon F. Portegies Zwart &dagger , Lev R. Yungelson &dagger |
| Affiliation: | Department of Astronomy, Boston University, 725 Commonwealth Avenue, Boston, MA 01581, USA; Department of Information Science and Graphics, College of Arts and Science, University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo 153, Japan; Institute of Astronomy of the Russian Academy of Sciences, 48 Pyatnitskaya Str., 109017 Moscow, Russia |
| Abstract: | 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+46 could very well be accompanied by white dwarfs with mass ≳1.1 M |
| Keywords: | binaries: close stars: neutron pulsars: general pulsars: individual: PSR B1820−11 pulsars: individual: PSR B2303+46 |