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Nature, 1977
As X-ray astronomy enters the Einstein era when faint, distant, and exotic X-ray sources are being investigated, we thought it might be useful to review some of the progress made over the past decade on a class of relatively nearby objects that have contributed richly to our understanding of astrophysics — the binary X-ray pulsars.
S. Rappaport, P. C. Joss
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As X-ray astronomy enters the Einstein era when faint, distant, and exotic X-ray sources are being investigated, we thought it might be useful to review some of the progress made over the past decade on a class of relatively nearby objects that have contributed richly to our understanding of astrophysics — the binary X-ray pulsars.
S. Rappaport, P. C. Joss
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Nature Physical Science, 1971
This article presents the results of an analysis of X-ray data from NP0532. Limits on X-ray pulsations from five galactic X-ray sources and ten radio pulsars are also given.
S. RAPPAPORT, H. BRADT, W. MAYER
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This article presents the results of an analysis of X-ray data from NP0532. Limits on X-ray pulsations from five galactic X-ray sources and ten radio pulsars are also given.
S. RAPPAPORT, H. BRADT, W. MAYER
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Publications of the Astronomical Society of Australia, 1985
AbstractTechniques in QED (quantum electrodynamics) have been developed previously (see for example Melrose and Parle 1983) allowing one to treat electron-photon and photon-photon interactions exactly in the magnetized vacuum and allowing one to include the effects of a medium.
Michelle C. Allen +2 more
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AbstractTechniques in QED (quantum electrodynamics) have been developed previously (see for example Melrose and Parle 1983) allowing one to treat electron-photon and photon-photon interactions exactly in the magnetized vacuum and allowing one to include the effects of a medium.
Michelle C. Allen +2 more
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X-ray scattering in x-ray binary pulsars
AIP Conference Proceedings, 1994In x‐ray pulsars, the emission from the bottom of the accretion column in the magnetic pole propagates to the observers through the surrounding environment: the magnetosphere, the accretion disk and the disk corona, the stellar wind, the companion’s atmosphere, and finally the interstellar medium.
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Hard X-ray spectra of anomalous X-ray pulsars
AIP Conference Proceedings, 2008We search for the hard X‐ray tails of anomalous X‐ray pulsars (AXPs) from 15–200 keV with two years of INTEGRAL/SPI and SWIFT/BAT observations. Two AXPs (1E1841‐045 and 4U0142+614) are detected with SPI. And four AXPs (1E1841‐045, 4U0142+614, 1RXS J1708‐40 and 1E2259+586) are detected with SWIFT Their hard X‐ray spectra above 20 keV can be described by
W. Wang +3 more
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The X-ray optics for X-ray pulsar navigation
SPIE Proceedings, 2016The effective X-ray optics is a key premise for X-ray pulsar detection and navigation. However, it is very difficult to focus the X-ray photons through refraction for the reason that the X-ray photon is very easy to be absorbed by the materials. The most effective ways for the X-ray focusing is reflection.
Dongdong Jin +6 more
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X-Ray Pulsar Signal Processing
2020As X-ray pulsar signal processing is one of the key techniques of X-ray pulsar-based navigation system, this chapter focuses on investigating the way how to effectively and accurately extract the pulse TOA out of the photon TOAs recorded by the X-ray sensors.
Wei Zheng, Yidi Wang
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Advances in Space Research, 1998
Abstract A new class of X-ray pulsars has been recently identified. Its members are characterised by: (i) similar spin periods in the 5–9 s range; (ii) secular spin down; (iii) very soft X-ray spectra; (iv) relatively low and constant X-ray luminosities of ∼ 10 35 – 10 36 erg s −1 ; (v) association with regions of diffuse X-ray and radio emission ...
L. Stella, G. L. Israel, S. Mereghetti
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Abstract A new class of X-ray pulsars has been recently identified. Its members are characterised by: (i) similar spin periods in the 5–9 s range; (ii) secular spin down; (iii) very soft X-ray spectra; (iv) relatively low and constant X-ray luminosities of ∼ 10 35 – 10 36 erg s −1 ; (v) association with regions of diffuse X-ray and radio emission ...
L. Stella, G. L. Israel, S. Mereghetti
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Accretion Powered X-Ray Pulsars
2006I will review the class of accreting powered neutron stars that are in close binary systems. I will summarize the recent developments and the main properties of the neutron stars. These include the formation of X-ray spectra, formation of pulse profiles, quasi periodic oscillations, pulse frequency fluctuations, long term variations and orbital period ...
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