Results 51 to 60 of about 142,094 (323)

THE RESEARCH OF VARIATION OF THE PERIOD AND PRECESSION OF THE ROTATION AXIS OF EGS (AJISAI) SATELLITE BY USING PHOTOMETRIC MEASUREMENT

open access: yesOdessa Astronomical Publications, 2014
The light curves of EGS Ajisai with temporal resolution of 20 ms referred to the time scale UTC (GPS) with an error of at most 0.1 ms were obtained. The observed flashes are produced when the mirrors which cover the spinning satellite’s surface reflect ...
N. Burlak   +5 more
doaj   +1 more source

On the precession of accretion discs in X-ray binaries

open access: yes, 1998
In this letter recent results on the nodal precession of accretion discs in close binaries are applied to the discs in some X-ray binary systems. The ratio between the tidally forced precession period and the binary orbital period is given, as well as ...
Larwood, J.
core   +1 more source

Towards models of gravitational waveforms from generic binaries II: Modelling precession effects with a single effective precession parameter [PDF]

open access: yes, 2014
Gravitational waves (GWs) emitted by generic black-hole binaries show a rich structure that directly reflects the complex dynamics introduced by the precession of the orbital plane, which poses a real challenge to the development of generic waveform ...
Hannam, Mark   +2 more
core   +3 more sources

Pseudo-Newtonian Potentials for Nearly Parabolic Orbits [PDF]

open access: yes, 2012
We describe a pseudo-Newtonian potential which, to within 1% error at all angular momenta, reproduces the precession due to general relativity of particles whose specific orbital energy is small compared to c^2 in the Schwarzschild metric.
Chen   +6 more
core   +2 more sources

PRECESSIONS IN RELATIVITY [PDF]

open access: yesThe Tenth Marcel Grossmann Meeting, 2006
5 pages, 5 figures, Proceedings of X Marcel Grossmann Meeting on General Relativity, Rio de Janeiro, July 20-26 ...
openaire   +2 more sources

EO-1 Data Quality and Sensor Stability with Changing Orbital Precession at the End of a 16 Year Mission

open access: yesRemote Sensing, 2017
The Earth Observing One (EO-1) satellite has completed 16 years of Earth observations in early 2017. What started as a technology mission to test various new advancements turned into a science and application mission that extended many years beyond the ...
Shannon Franks   +9 more
doaj   +1 more source

Tkachenko waves, glitches and precession in neutron star

open access: yes, 2008
Here I discuss possible relations between free precession of neutron stars, Tkachenko waves inside them and glitches. I note that the proposed precession period of the isolated neutron star RX J0720.4-3125 (Haberl et al.
A. Alpar   +28 more
core   +1 more source

Pulsar state switching, timing noise and free precession [PDF]

open access: yes, 2011
Recent radio pulsar observations have shown that a number of pulsars display interesting long term periodicities in their spin-down rates. At least some of these pulsars also undergo sharp changes in pulse profile.
Jones, D. I.
core   +1 more source

Resonant relaxation in protoplanetary disks [PDF]

open access: yes, 1998
Resonant relaxation is a novel form of two-body relaxation that arises in nearly Keplerian disks such as protoplanetary disks. Resonant relaxation does not affect the semimajor axes of the particles, but enhances relaxation of particle eccentricities and
Tremaine, Scott
core   +3 more sources

Lense-Thirring Precession in Pleba\'nski-Demia\'nski spacetimes

open access: yes, 2013
An exact expression of Lense-Thirring precession rate is derived for non-extremal and extremal Pleba\'nski-Demia\'nski spacetimes. This formula is used to find the exact Lense-Thirring precession rate in various axisymmetric spacetimes, like: Kerr, Kerr ...
A.H. Taub   +19 more
core   +1 more source

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