SIMBAD references

2017ApJ...842..105D - Astrophys. J., 842, 105-105 (2017/June-3)

The identification of the white dwarf companion to the millisecond pulsar j2317+1439.

DAI S., SMITH M.C., WANG S., OKAMOTO S., XU R.X., YUE Y.L. and LIU J.F.

Abstract (from CDS):

We report the identification of the optical counterpart to the companion of the millisecond pulsar J2317+1439. At the timing position of the pulsar, we find an object with g=22.96±0.05, r=22.86±0.04, and i=22.82±0.05. The magnitudes and colors of the object are consistent with a white dwarf (WD). Compared with WD cooling models, we estimate that it has a mass of 0.39–0.10+0.13M, an effective temperature of 8077–470+550 K, and a cooling age of 10.9 ± 0.3 Gyr. Combining our results with published constraints on the orbital parameters obtained through pulsar timing, we estimate the pulsar mass to be 3.4–1.1+1.4M. Although the constraint on the pulsar mass is still weak, there is a significant possibility that the pulsar could be more massive than two solar masses.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): pulsars: general - stars: individual: PSR J2317+1439 - white dwarfs - white dwarfs

Simbad objects: 7

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2021.04.13-00:20:37

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