Modeling Multi-Wavelength Pulse Profiles of the Millisecond Pulsar PSR B1821–24

Du, Y. J.; Qiao, G. J.; Peng, Shuai; Bei, Xiaomin; Chen, Shaolong; Fu, L.; Huang, Liangwei; Lin, Qingqing; Meng, Jing; Wu, Yaojun; Zhang, Hengbin; Qian, Zhiliang; Zhang, Mengjie

doi:10.1088/0004-637x/801/2/131

Cited by 6 publications

(4 citation statements)

References 20 publications

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“…Radio polarization measurements could verify this model, which would predict depolarization and rapid position angle swings in the caustic peaks but higher levels of polarization in the other peak. Du et al (2015) reproduced the 1.4 GHz radio, X-ray, and gamma-ray light curves of PSR J1824−2452A using a single-pole annular gap model. The emission regions for all three wavebands were modeled as extended in the pulsar magnetosphere with some overlap, explaining the fact that some, but not all, of the peaks are aligned in phase.…”

Section: Pulsed Light Curvesmentioning

confidence: 99%

Discovery of Gamma-Ray Pulsations From the Transitional Redback PSR J1227-4853

Johnson

Ray

Roy

et al. 2015

ApJ

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The 1.69 ms spin period of PSR J1227−4853 was recently discovered in radio observations of the low-mass X-ray binary XSS J12270−4859 following the announcement of a possible transition to a rotation-powered millisecond pulsar state, inferred from decreases in optical, X-ray, and gamma-ray flux from the source. We report the detection of significant (5σ) gamma-ray pulsations after the transition, at the known spin period, using ∼1 year of data from the Large Area Telescope on board the Fermi Gamma-ray Space Telescope. The gamma-ray light curve of PSR J1227−4853 can be fit by one broad peak, which occurs at nearly the same phase as the main peak in the 1.4 GHz radio profile. The partial alignment of light-curve peaks in different wavebands suggests that at least some of the radio emission may originate at high altitude in the pulsar magnetosphere, in extended regions co-located with the gamma-ray emission site. We folded the LAT data at the orbital period, both pre-and post-transition, but find no

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Section: Pulsed Light Curvesmentioning

confidence: 99%

Discovery of Gamma-Ray Pulsations From the Transitional Redback PSR J1227-4853

Johnson

Ray

Roy

et al. 2015

ApJ

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“…First, its characteristic age (τ ∼ 3 × 10 7 yrs) is much smaller than the other MSPs. Apart from its high value of L x , the X-ray pulses of this isolated MSP have a very narrow profile which suggests its non-thermal nature with the origin from the magnetospheric accelerator (Du et al 2015). Also, its X-ray emission can be detected at energies up to ∼ 50 keV.…”

Section: Correlation and Regression Analysismentioning

confidence: 88%

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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“…First, its characteristic age (τ ∼ 3 × 10 7 yr) is much smaller than the other MSPs. Apart from its high value of L x , the X-ray pulses of this isolated MSP have a very narrow profile which suggests its nonthermal nature with the origin from the magnetospheric accelerator (Du et al 2015). Also, its X-ray emission can be detected at energies up to ∼50 keV.…”

mentioning

confidence: 88%

A Comparison of Millisecond Pulsar Populations between Globular Clusters and the Galactic Field

Lee

Hui

Takata

et al. 2023

ApJ

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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 in the MSP binaries in GCs. There is also an indication that the surface magnetic field of GC MSPs is 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 relations between the X-ray luminosity and spin-down power. We discuss this in terms of both the pulsar emission model and the observational bias.

show abstract

Modeling Multi-Wavelength Pulse Profiles of the Millisecond Pulsar PSR B1821–24

Cited by 6 publications

References 20 publications

Discovery of Gamma-Ray Pulsations From the Transitional Redback PSR J1227-4853

Discovery of Gamma-Ray Pulsations From the Transitional Redback PSR J1227-4853

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

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