Results 271 to 280 of about 809,546 (293)

Navigation using binary pulsars

Science China Physics, Mechanics and Astronomy, 2012
The issue of navigation using binary pulsars is investigated in this paper. We show how the effect of the binary motion is incorporated in the navigation measurement equation. Necessary reference systems and time scales are introduced and the transformation between different time scales is derived. Based mainly on Damour and Deruelle’s binary model and
LiangWei Huang, Bin Liang, Tao Zhang, CaiHong Zhang   +3 more
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Binary gamma-ray pulsars

2021
1967 wurde der erste Pulsar als scheinbar pulsierende Radioquelle entdeckt. Seitdem wurden mehr als 2800 weitere Pulsare gefunden, die meisten davon ebenfalls im Radiobereich. Mit dem Start des Fermi Gamma-ray Space Telescope im Jahr 2008 wurden mittlerweile mehr als 250 Gamma-Pulsare entdeckt.
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An eclipsing binary pulsar

Nature, 1988
Tentative d'explication schematique de l'evolution des systemes binaires pouvant donner naissance a des pulsars tres ...
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Neutrinos from binary pulsars

Nature, 1978
It is shown that binary systems containing moderately young pulsars may emit high-energy neutrinos (between 1 and 100 TeV) at detectable levels. The pulsars are assumed to have total luminosities of the order of 10 to the 38th erg/sec. The neutrinos are produced by high energy particles (e.g. protons) from the pulsar striking the companion.
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Binary and Millisecond Pulsars

2014
The first evidence for neutron stars residing in binaries came in the early 60s when Giacconi et al. (1962) discovered the first extrasolar X-ray source, Sco X\(-\)1.
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Interstellar scintillations of binary pulsars

AIP Conference Proceedings, 1988
We have measured interstellar scintillations of two binary pulsars (1855+09 and 1913+16) to determine their transverse velocities at numerous points in their orbits. Combining transverse velocities with radial velocities derived from Doppler shifts, one can (in principle) determine a binary system’s proper motion and orbital inclination, and the bulk ...
R. J. Dewey, J. M. Cordes, A. Wolszczan, J. M. Weisberg   +3 more
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Binary and millisecond radio pulsars

Advances in Space Research, 2006
Abstract Recent pulsar surveys, especially those using the multibeam receiver on the Parkes radio telescope, have more than doubled the number of known pulsars, bringing the current total to about 1720. Of these, 171 have millisecond periods, 126 are members of binary systems and 99 are associated with globular clusters. Binary pulsars may be divided
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Optical identification of binary pulsars

Advances in Space Research, 1988
Abstract Of the nearly 500 known pulsars, only seven pulsars are in binary systems. In this article, I review the identification of binary pulsars with emphasis on the critical and unique information provided by optical observations. Optical observations have provided: (i) basic conformation of the stellar evolution acenarios and (ii) observational ...
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Formation of binary radio pulsars

Astrophysics, 1988
In the framework of the standard scenario of the evolution of massive binary stars a study is made of the formation of final binary systems in which at least one of the components is a neutron star. It is found that about every fortieth radio pulsar must be a member of a close binary system. This is confirmed by observations.
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Binary and Millisecond Pulsars

2023
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