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The possible companions of young radio pulsars |
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| Authors: | Simon F Portegies Zwart † Lev R Yungelson † |
| Institution: | 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 |