An X-ray View of Radio Millisecond Pulsars

Bogdanov, Slavko; Grindlay, Jonathan E.

doi:10.1063/1.2900321

Cited by 2 publications

(1 citation statement)

References 26 publications

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“…While the relativistic electron/positron cascades emit the non-thermal synchrotron X-rays when they gyrate along the magnetic field lines, thermal X-ray emission can also be generated when these energetic particles follow the open magnetic field lines and deposit their energies on the stellar surface (e.g. Zavlin 2007;Bogdanov & Grindlay 2008). For the MSPs reside in the compact binaries, additional X-ray emission component can be resulted from the intrabinary shock (e.g.…”

Section: Introductionmentioning

confidence: 99%

A comparison of millisecond pulsar populations between globular clusters and the Galactic field

Lee¹,

Hui²,

Takata³

et al. 2023

Preprint

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We have performed a systematic study of the rotational, orbital and X-ray properties of millisecond pulsars (MSPs) in globular clusters (GCs) and compared their nature with those of the MSPs in the Galactic field (GF). We found that GC MSPs generally rotate slower than their counterparts in the GF. Different from the expectation of a simple recycling scenario, no evidence for the correlation between the orbital period and the rotation period can be found from the MSP binaries in GCs. There is also an indication that the surface magnetic field of GC MSPs are stronger than those in the GF. All these suggest dynamical interactions in GCs can alter the evolution of MSPs/their progenitors which can leave an imprint on their X-ray emission properties. While the MSPs in both GF and GCs have similar distributions of X-ray luminosity and hardness, our sample supports the notion that these two populations follow different relation between the X-ray luminosity and spin-down power. We discuss this in terms of both pulsar emission model and the observational bias.

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Section: Introductionmentioning

confidence: 99%

A comparison of millisecond pulsar populations between globular clusters and the Galactic field

Lee¹,

Hui²,

Takata³

et al. 2023

Preprint

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ACHANDRA X-RAY OBSERVATORYSTUDY OF PSR J1740-5340 AND CANDIDATE MILLISECOND PULSARS IN THE GLOBULAR CLUSTER NGC 6397

Bogdanov

Berg

Heinke

et al. 2009

ApJ

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We present a deep Chandra X-ray Observatory study of the peculiar binary radio millisecond pulsar PSR J1740-5340 and candidate millisecond pulsars (MSPs) in the globular cluster NGC 6397. The X-rays from PSR J1740-5340 appear to be non-thermal and exhibit variability at the binary period. These properties suggest the presence of a relativistic intrabinary shock formed due to interaction of a relativistic rotation-powered pulsar wind and outflow from the unusual "red-straggler/sub-subgiant" companion. We find the X-ray source U18 to show similar X-ray and optical properties to those of PSR J1740-5340, making it a strong MSP candidate. It exhibits variability on timescales from hours to years, also consistent with an intrabinary shock origin of its X-ray emission. The unprecedented depth of the X-ray data allows us to conduct a complete census of MSPs in NGC 6397. Based on the properties of the present sample of X-ray-detected MSPs in the Galaxy we find that NGC 6397 probably hosts no more than 6 MSPs. 6 For an up-to-date list of all known globular cluster MSPs see

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An X-ray View of Radio Millisecond Pulsars

Cited by 2 publications

References 26 publications

A comparison of millisecond pulsar populations between globular clusters and the Galactic field

A comparison of millisecond pulsar populations between globular clusters and the Galactic field

ACHANDRA X-RAY OBSERVATORYSTUDY OF PSR J1740-5340 AND CANDIDATE MILLISECOND PULSARS IN THE GLOBULAR CLUSTER NGC 6397

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