Thermal X-ray emission identified from the millisecond pulsar PSR J1909-3744
Abstract
Context. Pulsating thermal X-ray emission from millisecond pulsars can be used to obtain constraints on the neutron star equation of state, but to date only five such sources have been identified. Of these five millisecond pulsars, only two have well-constrained neutron star masses, which improve the determination of the radius via modelling of the X-ray waveform.
Aims: We aim to find other millisecond pulsars that already have well-constrained mass and distance measurements that show pulsed thermal X-ray emission in order to obtain tight constraints on the neutron star equation of state.
Methods: The millisecond pulsar
Results: We show that the X-ray emission from
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- July 2019
- DOI:
- 10.1051/0004-6361/201732040
- arXiv:
- arXiv:1906.10438
- Bibcode:
- 2019A&A...627A.141W
- Keywords:
-
- stars: neutron;
- dense matter;
- equation of state;
- X-rays: individuals: PSR J1909-3744;
- Astrophysics - High Energy Astrophysical Phenomena
- E-Print:
- 5 pages, 4 figures, accepted for publication in A&