Building X-ray pulsar timing model without the use of radio parameters
Sign Up to like & getrecommendations! Published in 2018 at "Acta Astronautica"
DOI: 10.1016/j.actaastro.2017.11.014
Abstract: Abstract This paper develops a timing solution for the X-ray pulsar timing model without the use of the initial radio model parameters. First, we address the problem of phase ambiguities for the pre-fit residuals in… read more here.
Keywords: pulsar; radio; model; ray pulsar ... See more keywords
Fast simulation of X-ray pulsar signals at a spacecraft
Sign Up to like & getrecommendations! Published in 2020 at "Acta Astronautica"
DOI: 10.1016/j.actaastro.2019.10.016
Abstract: Abstract Existing methods for simulating pulsar signals at a spacecraft are inapplicable for large flux or high frequency because of their low efficiency, hindering research on X-ray pulsar-based navigation. To solve the problem, we propose… read more here.
Keywords: pulsar; pulsar signals; fast simulation; ray pulsar ... See more keywords
Modified kernel regression method for the denoising of X-ray pulsar profiles
Sign Up to like & getrecommendations! Published in 2018 at "Advances in Space Research"
DOI: 10.1016/j.asr.2018.04.027
Abstract: Abstract In this paper, a modified kernel regression algorithm is proposed to reduce the noise of pulsar profiles autonomously. Taking advantage of the classical autonomous kernel regression the presented algorithm based on the second-order derivative… read more here.
Keywords: pulsar profiles; kernel regression; regression; modified kernel ... See more keywords
Formation of a Satellite Navigation System Using X-Ray Pulsars
Sign Up to like & getrecommendations! Published in 2019 at "Publications of the Astronomical Society of the Pacific"
DOI: 10.1088/1538-3873/aafc73
Abstract: The ephemeris of a pulsar is stable for a long time, which allows navigation based on pulsar orientation to be vector feasible. The formation of a satellite navigation model using the orientation vector of an… read more here.
Keywords: satellite navigation; ray pulsar; navigation; formation satellite ... See more keywords
Study of recent outburst in the Be/X-ray binary RX J0209.6−7427 with AstroSat: a new ultraluminous X-ray pulsar in the Magellanic Bridge?
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staa1041
Abstract: We present the timing and spectral studies of RX J0209.6-7427 during its rare 2019 outburst using observations with the Soft X-ray Telescope (SXT) and Large Area X-ray Proportional Counter (LAXPC) instruments on the AstroSat satellite.… read more here.
Keywords: j0209 7427; energy; ray pulsar; ray ... See more keywords
Comprehensive analysis of the transient X-ray pulsar MAXI J1409−619
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staa1562
Abstract: We probe the properties of the transient X-ray pulsar MAXI J1409−619 through RXTE and Swift follow-up observations of the outburst in 2010. We are able to phase-connect the pulse arrival times for the 25 d episode… read more here.
Keywords: ray; transient ray; ray pulsar; j1409 619 ... See more keywords
On the spin-up events and spin direction of the X-ray pulsar GX 301-2
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staa1774
Abstract: Recently a retrograde neutron star is proposed for the classical wind-fed X-ray pulsar, GX 301-2, to explain the orbital spin-up to spin-down reversal near periastron, based on the stream model invoked to explain the pre-periastron… read more here.
Keywords: spin events; periastron; pulsar 301; spin ... See more keywords
XMM–Newton observations of a gamma-ray pulsar J0633+0632: pulsations, cooling and large-scale emission
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staa287
Abstract: We report results of XMM–Newton observations of a γ-ray pulsar J0633+0632 and its wind nebula. We reveal, for the first time, pulsations of the pulsar X-ray emission with a single sinusoidal pulse profile and a… read more here.
Keywords: emission; ray pulsar; pulsar; newton observations ... See more keywords
Dramatic spectral transition of X-ray pulsar GX 304−1 in low luminous state
Sign Up to like & getrecommendations! Published in 2018 at "Monthly Notices of the Royal Astronomical Society: Letters"
DOI: 10.1093/mnrasl/sly236
Abstract: We report on the discovery of a dramatic change in the energy spectrum of the X-ray pulsar GX 304−1 appearing at low luminosity. Particularly, we found that the cut-off power-law spectrum typical for accreting pulsars,… read more here.
Keywords: transition; energy; spectrum; ray pulsar ... See more keywords
Semiphysical Simulation Technique of X-Ray Pulsar Signals Detected at the Spacecraft
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Transactions on Industrial Electronics"
DOI: 10.1109/tie.2016.2613060
Abstract: The existing semiphysical simulation systems for X-ray pulsar signals are predicated on assuming the period of arrived signal is constant within a given time-span, thus cannot accurately simulate photon arrivals as seen by a detector… read more here.
Keywords: semiphysical simulation; time; simulation technique; simulation ... See more keywords
Pulsar-based navigation results: data processing of the x-ray pulsar navigation-I telescope
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Astronomical Telescopes, Instruments, and Systems"
DOI: 10.1117/1.jatis.5.1.018003
Abstract: Abstract. Pulsar-based navigation for spacecraft is a revolutionary technology that has been researched for several decades. To validate it, China launched a small experimental satellite, the x-ray pulsar navigation-I (XPNAV-1), whose main payload was the… read more here.
Keywords: pulsar based; ray pulsar; navigation; pulsar ... See more keywords