Results 21 to 30 of about 6,326 (188)

Pulsar statistics - IV. Pulsar velocities [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 1997
We have used Monte Carlo simulations of the Galactic pulsar population to reassess the kinematics of radio pulsars in light of the large number of recently published proper motions and the revised distance model. Our modelling of the observational selection effects that distort the observed sample is far more detailed and self-consistent than that of ...
Lorimer, D. R.   +2 more
openaire   +2 more sources

Pulsar Electrodynamics — Pulsars and Puzzlers — [PDF]

open access: yesInternational Astronomical Union Colloquium, 1996
Abstract A gedanken experiment presented here provides basic understanding of how the pulsar magnetosphere operates. We discuss current issues about the electric-field acceleration along magnetic field lines and subsequent pair creation, and also about the pulsar wind problem.
openaire   +1 more source

Variable Magellanic HMXB Sources versus Variable ULX Sources: Nothing to Brag about the ULX Sources

open access: yesGalaxies, 2020
We carry out a meta-analysis of ultraluminous X-ray (ULX) sources that show large variabilities (by factors of >10) between their highest and lowest emission states in the X-ray energy range of 0.3–10 keV.
Dimitris M. Christodoulou   +5 more
doaj   +1 more source

POLAR GAP IN THE PULSAR FORCE-FREE MAGNETOSPHERE STRUCTURE

open access: yesRadio Physics and Radio Astronomy, 2015
The stationary axisymmetric force-free magnetosphere of a pulsar is considered by accounting for the polar gap and current circuit. Adjustment of the vacuum polar gap and the closing current sheet with the force-free magnetosphere of a monopolar ...
S. A. Petrova
doaj   +1 more source

Spin Equilibrium of Rapidly Spinning Neutron Stars via Transient Accretion

open access: yesGalaxies, 2023
The concept of spin equilibrium due to an interaction between the stellar magnetosphere and a thin, Keplerian accretion disk, and a well-known formula of the corresponding equilibrium spin frequency, provide a key understanding of spin evolution and the ...
Sudip Bhattacharyya
doaj   +1 more source

Investigation of Accuracy of TOA and SNR of Radio Pulsar Signals for Vehicles Navigation

open access: yesSensors, 2023
It is known that X-ray and gamma-ray pulsars can only be observed by spacecraft because signals from these pulsars are impossible to be detected on the Earth’s surface due to their strong absorption by the Earth’s atmosphere.
Hristo Kabakchiev   +4 more
doaj   +1 more source

Pulsars and Magnetars [PDF]

open access: yesBrazilian Journal of Physics, 2013
The high-energy sources known as anomalous X-ray pulsars (AXPs) and soft gamma-ray repeaters (SGRs) are well explained as magnetars: isolated neutron stars powered by their own magnetic energy. After explaining why it is generally believed that the traditional energy sources at work in other neutron stars (accretion, rotation, residual heat) cannot ...
openaire   +2 more sources

Pulsars

open access: yesLe Journal de Physique Colloques, 1973
Pas de Résumé ...
openaire   +2 more sources

DECAMETER PULSAR/TRANSIENT SURVEY OF NORTHEN SKY. FIRST RESULTS

open access: yesRadio Physics and Radio Astronomy, 2014
The decameter pulsar/transient survey is now being made using the UTR-2 radio telescope. The survey strategy and parameters, equipment characteristics, data processing algorithms as well as preliminary results are described. The very first result was the
Ia. Yu. Vasylieva   +6 more
doaj   +1 more source

Physicochemical fundamentals of phase formation in silicon layers implanted with oxygen and carbon [PDF]

open access: yesModern Electronic Materials, 2019
The thermodynamic and kinetic regularities of processes occurring during heat treatment in silicon layers implanted with oxygen and carbon ions have been considered.
Andrey N. Aleshin, Kira L. Enisherlova
doaj   +3 more sources

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