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Showing 1 to 9 of 9 for “"Millisecond pulsar"”.
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Studying the southerly eclipsing millisecond pulsar J1748-2446A using MeerKAT
… scattering characteristics of PSR J1748-2446A, a millisecond pulsar in an ablating binary system, as its pulses pass through the companion star's outflow material. To conduct this analysis we used two observations from the South African MeerKAT telescope at L-band frequencies. As PSR J1748-2446A …
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X-ray timing of the accreting millisecond pulsar SAX J1808.4-3658
… present a 7 yr timing study of the 2.5 ms X-ray pulsar SAX J1808.4-3658, an X-ray transient with a recurrence time of =2 yr, using data from the Rossi X-ray Timing Explorer covering 4 transient outbursts (1998-2005). Substantial pulse shape variability, both stochastic and systematic, was …
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A comparative study of binary synthesis modelling software for neutron star mass estimates
Binary star systems known as spiders consist of a millisecond pulsar ablating or accreting from its main sequence companion star. The pulsars in these systems are known for being quite massive and, as such, are useful in the effort to constrain the equation of state for nuclear matter. Accurate …
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X-ray spectroscopy of low-mass X-ray binaries
… ultracompact binary, the accretion-powered millisecond pulsar XTE J0929-314. No emission or absorption features are found in the high-resolution spectrum of this source, and the neutral absorption edge depths are consistent with the estimated interstellar absorption. The second part of this …
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Very old and very young compact objects : X-ray studies of galactic globular clusters and recent core-collapse supernovae
… radio data, and another was found to be a millisecond pulsar. Of the remaining sources, I expect that 2-4 are background objects and that the rest are either CVs or millisecond pulsars whose radio emission has not been detected. These and other Chandra results on globular clusters indicate …
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X-ray spectroscopy of neutron star low-mass X-ray binaries
… high- and low-resolution--of accretion-powered millisecond X-ray pulsars, a unique and relatively new class of objects. In addition to analysis of the pulsar XTE J1814-338, I compare a broader sample of pulsars with a sample of atoll sources in order to better understand why the latter class do …
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A spectroscopic and photometric study of MSP companions in Galactic Globular Clusters
… to the study of the optical companions of Millisecond Pulsars in Galactic Globular Clusters (GCs) as a part of a large project started at the Department of Astronomy of the Bologna University, in collaboration with other institutions (Astronomical Observatory of Cagliari and Bologna, …
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Gamma-ray emission from Galactic millisecond pulsars: Implications for dark matter indirect detection
… In the meantime, a population of unresolved millisecond pulsars (MSPs) in the Galactic center remains a possible source of the excess. Furthermore, recent analyses have shown that the excess prefers the spatial morphology of the stellar bulge distribution in the Galactic center, supporting a …
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Spectroscopic and photometric observations and analysis of compact binaries
… a neutron star and is also a Transitional Millisecond Pulsar (tMSP) candidate. All of these sources were observed as part of the Southern African Large Telescope (SALT) transient follow-up program. The CV, 2SXPS J062339.9−265751, was recently found in the eROSITA all-sky survey and was …