1998A&A...334L..17T


Query : 1998A&A...334L..17T

1998A&A...334L..17T - Astronomy and Astrophysics, volume 334, L17-20 (1998/6-1)

PSR J2019+2425: a unique testing ground for binary evolution.

TAURIS T.M.

Abstract (from CDS):

If the theoretical relationship between white dwarf mass and orbital period for wide-orbit binary radio pulsars is assumed to be correct, then the neutron star mass of PSR J2019+2425 is shown to be ∼1.20M. Hence the mass of the neutron star in this system prior to the mass transfer phase is expected to have been <1.1M. Alternatively this system descends from the accretion induced collapse (AIC) of a massive white dwarf. We estimate the magnetic inclination angles of all the observed wide-orbit low-mass binary pulsars in the Galactic disk using the core-mass period relation and assuming that the spin axis of an accreting neutron star aligns with the orbital angular momentum vector in the recycling process of the pulsar. The large estimated magnetic inclination angle of PSR J2019+2425, in combination with its old age, gives for this system evidence against alignment of the magnetic field axis with the rotational spin axis. However, in the majority of the similar systems the distribution of magnetic inclination angles is concentrated toward low values (if the core-mass period relation is correct) and suggests that alignment has taken place.

Abstract Copyright:

Journal keyword(s): binaries: evolution, mass-loss, compact stars - stars: neutron - pulsars: general, formation

Simbad objects: 10

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Number of rows : 10
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 PSR J0823+0159 Psr 08 23 09.788 +01 59 12.56           DA 217 0
2 PSR J1455-3300 Psr 14 55 47.9624 -33 30 46.360           ~ 117 1
3 PSR J1640+2224 Psr 16 40 16.74231 +22 24 08.9413           ~ 146 0
4 PSR J1643-1224 Psr 16 43 38.15583 -12 24 58.7200           ~ 177 1
5 PSR J1713+0447 Psr 17 13 49.53053 +07 47 37.5264           ~ 405 1
6 PSR B1800-27 Psr 18 03 31.692 -27 12 06.00           ~ 53 0
7 PSR B1953+29 Psr 19 55 27.8757 +29 08 43.530           ~ 270 1
8 PSR J2019+24 Psr 20 19 31.94900 +24 25 15.3038           ~ 125 1
9 PSR J2033+1736 Psr 20 33 16.9140266736 +17 37 48.047177388   11.59 10.50     ~ 52 0
10 PSR J2229+26 Psr 22 29 50.8864 +26 43 57.785           ~ 88 1

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2022.05.22-18:35:31

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