X-rays from Radio Millisecond Pulsars
Slavko Bogdanov (Columbia)
TL;DR
This paper reviews the diverse X-ray emission mechanisms of radio millisecond pulsars, highlighting their significance for understanding neutron star interiors and the role of NICER in these studies.
Contribution
It provides a comprehensive overview of X-ray properties of MSPs and discusses their implications for neutron star physics and the potential of NICER observations.
Findings
Energetic MSPs exhibit pulsed non-thermal X-ray emission.
Eclipsing binary MSPs show X-ray emission from intra-binary shocks.
Thermally emitting MSPs help constrain the dense matter equation of state.
Abstract
The Galactic population of rotation-powered (aka radio) millisecond pulsars (MSPs) exhibits diverse X-ray properties. Energetic MSPs show pulsed non-thermal radiation from their magnetospheres. Eclipsing binary MSPs predominantly have X-ray emission from a pulsar wind driven intra-binary shock. Typical radio MSPs emit X-rays from their heated magnetic polar caps. These thermally emitting MSPs offer the opportunity to place interesting constraints on the long sought after dense matter equation of state, making them important targets of investigation of the recently deployed Neutron Star Interior Composition Explorer (NICER) X-ray mission.
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