2011A&A...527A.128C


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.04CEST02:55:09

2011A&A...527A.128C - Astronomy and Astrophysics, volume 527A, 128-128 (2011/3-1)

The progenitor of binary millisecond radio pulsar PSR J1713+0747.

CHEN W.-C. and PANEI J.A.

Abstract (from CDS):

PSR J1713+0747 is a binary system comprising millisecond radio pulsar with a spin period of 4.57ms, and a low-mass white dwarf (WD) companion orbiting the pulsar with a period of 67.8 days. Using the general relativistic Shapiro delay, the masses of the WD and pulsar components were previously found to be 0.28±0.03M and 1.3±0.2M (68% confidence), respectively. Standard binary evolution theory suggests that PSR J1713+0747 evolved from a low-mass X-ray binary (LMXB). Here, we test this hypothesis. We used a binary evolution code and a WD evolution code to calculate evolutionary sequences of LMXBs that could result in binary millisecond radio pulsars such as PSR J1713+0747. During the mass exchange, the mass transfer is nonconservative. Because of the thermal and viscous instabilities developing in the accretion disk, the neutron star accretes only a small part of the incoming material. We find that the progenitor of PSR J1713+0747 can be modelled as an LMXB including a donor star with mass 1.3-1.6 M and an initial orbital period ranging from 2.40 to 4.15 days. If the cooling timescale of the WD is 8Gyr, its present effective temperature is between 3870 and 4120K, slightly higher than the observed value. We estimate a surface gravity of Log (g)≃7.38-7.40.

Abstract Copyright:

Journal keyword(s): stars: low-mass - pulsars: general - white dwarfs

Simbad objects: 4

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Number of rows : 4

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 V* V818 Sco LXB 16 19 55.0688745859 -15 38 25.019920749 11.60 12.40 11.1     Oev 1525 0
2 PSR J1713+0447 Psr 17 13 49.53053 +07 47 37.5264           ~ 356 1
3 2EG J1746-2852 LXB 17 44 33.09 -28 44 27.0           ~ 484 0
4 V* V4580 Sgr LXB 18 08 27.54 -36 58 44.3   16.81 16.51     ~ 870 0

    Equat.    Gal    SGal    Ecl

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2020.07.04-02:55:09

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