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Ka Ho Lo

Researcher at University of Illinois at Urbana–Champaign

Publications -  12
Citations -  465

Ka Ho Lo is an academic researcher from University of Illinois at Urbana–Champaign. The author has contributed to research in topics: Neutron star & Millisecond. The author has an hindex of 8, co-authored 12 publications receiving 454 citations.

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A model for the waveform behavior of accreting millisecond x-ray pulsars: nearly aligned magnetic fields and moving emission regions

TL;DR: In this article, the authors investigated a model of the accreting millisecond X-ray pulsars and showed that the magnetic poles of these stars are close to their spin axes, and the gas is channeled along different field lines to different locations on the stellar surface.
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Determining neutron star masses and radii using energy-resolved waveforms of x-ray burst oscillations

TL;DR: In this article, the authors used the energy-dependent waveforms of the X-ray flux oscillations seen during some thermonuclear bursts from some neutron stars to constrain the mass M and radius R of neutron stars.
Journal ArticleDOI

A model for the waveform behavior of accreting millisecond pulsars: Nearly aligned magnetic fields and moving emission regions

TL;DR: In this article, the authors investigated a model of the accreting millisecond X-ray pulsars and showed that the magnetic poles of these stars are close to their spin axes, and the gas is channeled along different field lines to different locations on the stellar surface.
Journal ArticleDOI

Determining neutron star masses and radii using energy-resolved waveforms of X-ray burst oscillations

TL;DR: In this paper, the authors explore how well mass and radius of neutron stars can be determined by generating, and analyzing using Bayesian techniques, synthetic energy-resolved X-ray data that they produce assuming a future space mission having 2-30 keV energy coverage and an effective area of 10 m$^2.
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Origin of intermittent accretion-powered x-ray oscillations in neutron stars with millisecond spin periods

TL;DR: In this paper, it was shown that moving the emitting area from very close to the spin axis to approximately 10 deg. away can increase the fractional rms amplitude from approx < 0.5% to a few percent, which is easily detectable.