Eccentric Binary Millisecond Pulsars
نویسنده
چکیده
In this paper we review recent discovery of millisecond pulsars (MSPs) in eccentric binary systems. Timing these MSPs we were able to estimate (and in one case precisely measure) their masses. These results suggest that, as a class, MSPs have a much wider range of masses (1.3 to > 2M⊙) than the normal and mildly recycled pulsars found in double neutron star (DNS) systems (1.25 < Mp < 1.44M⊙). This is very likely to be due to the prolonged accretion episode that is thought to be required to form a MSP. The likely existence of massive MSPs makes them a powerful probe for understanding the behavior of matter at densities larger than that of the atomic nucleus; in particular, the precise measurement of the mass of PSR J1903+0327 (1.67±0.01M⊙) excludes several "soft" equations of state for dense matter.
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