نتایج جستجو برای: gravitational wave
تعداد نتایج: 250460 فیلتر نتایج به سال:
We review the tests of general relativity that will become possible with space-based gravitational-wave detectors operating in the ∼ 10-5 - 1 Hz low-frequency band. The fundamental aspects of gravitation that can be tested include the presence of additional gravitational fields other than the metric; the number and tensorial nature of gravitational-wave polarization states; the velocity of prop...
LISA is a space-borne, laser-interferometric gravitational-wave detector currently under study by the European Space Agency. We give a brief introduction about the main features of the detector, concentrating on its one-year orbital motion around the Sun. We compute how the amplitude as well as the phase of a gravitational wave are modulated due to this motion by transforming an arbitrary gravi...
Largely motivated by the development of highly sensitive gravitational-wave detectors, our understanding of merging compact binaries and the gravitational waves they generate has improved dramatically in recent years. Breakthroughs in numerical relativity now allow us to model the coalescence of two black holes with no approximations or simplifications. There has also been outstanding progress ...
We present the results of a search for gravitational waves associated with 223 γ-ray bursts (GRBs) detected by the InterPlanetary Network (IPN) in 2005-2010 during LIGO's fifth and sixth science runs and Virgo's first, second, and third science runs. The IPN satellites provide accurate times of the bursts and sky localizations that vary significantly from degree scale to hundreds of square degr...
.5ex > ∼ < ∼ graphicxdcolumnbm document Wave effect in gravitational lensing by a cosmic string Kazuhiro Yamamoto and Keiji Tsunoda Department of Physical Science, Hiroshima University, HigashiHiroshima 739-8526, Japan abstract The wave effect in the gravitational lensing phenomenon by a straight cosmic string is investigated. The interference pattern is expressed in terms of a simple formula. ...
Gravitational interaction is considered with use of the universal charge. Gravitational wave is defined as a tenzor electromagnetic like wave of the Planck mass. Within the Planck time it decays into four hypothetical Planck neutrinos. The quadrupole gravitational emission in the theory with the universal charge is the same as in general relativity. Gravitational radiation as Planck neutrinos d...
We study the secular evolution and gravitational wave signature of a newly-formed, rapidly rotating neutron star. The neutron star may arise from core collapse in a massive star or from the accretion-induced collapse of a white dwarf. After a brief dynamical phase, the nascent neutron star settles into an axisymmetric, secularly unstable equilibrium state. Gravitational radiation drives the sta...
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