Results 21 to 30 of about 1,324 (160)

Tests of General Relativity from Timing the Double Pulsar [PDF]

Science, 2006
The double pulsar system PSR J0737-3039A/B is unique in that both neutron stars are detectable as radio pulsars. They are also known to have much higher mean orbital velocities and accelerations than those of other binary pulsars. The system is therefore a good candidate for testing Einstein's theory of general relativity and alternative ...
Kramer M, Stairs IH, Manchester RN, McLaughlin MA, Lyne AG, Ferdman RD, Burgay M, Lorimer DR, Possenti A, D'AMICO, NICOLO', Sarkissian JM, Hobbs GB, Reynolds JE, Freire PCC, Camilo F.   +14 more
openaire   +4 more sources

Testing Gravity with Pulsars in the SKA Era [PDF]

, 2015
The Square Kilometre Array (SKA) will use pulsars to enable precise measurements of strong gravity effects in pulsar systems, which yield tests of gravitational theories that cannot be carried out anywhere else.
Michael Kramer, Ransom, S., Possenti, A, Janssen, G, Freire, P, Deller, A, Stappers, B., Laemmerzahl, C, Paulo Freire, Antoniadis, J., Claus Laemmerzahl, Scott Ransom, Deller, A., Willem van Straten, Ransom, S, Hessels, J, Janssen, G., Kunz, J., Hessels, J., Lijing Shao, Gemma Janssen, Kramer, M., Kunz, J, Stairs, I., Stappers, B; id_orcid, POSSENTI, ANDREA, Possenti, A., van Straten, W, Ben Stappers, Jutta Kunz, Freire, P., Kramer, M, Perlick, V, Perlick, V., van Straten, W., Volker Perlick, Shao, L, Ingrid Stairs, Antoniadis, J, John Antoniadis, Stairs, I, Laemmerzahl, C., Shao, L., Andrea Possenti, Adam Deller, Jason Hessels   +45 more
core   +3 more sources

A relativistic navigation system for space

, 2011
We present here a method for the relativistic positioning in spacetime based on the reception of pulses from sources of electromagnetic signals whose worldline is known.
Capolongo, Emiliano, Tartaglia, Angelo, Moraud, E. M., Chicca, Elisabetta, Ruggiero, Matteo Luca, Chicca, Elisabetta ; https://orcid.org/, Moraud, Eduardo M   +6 more
core   +1 more source

30 glitches in slow pulsars [PDF]

, 2006
We have analyzed 5.5 years of timing observations of 7 "slowly" rotating radio pulsars, made with the Westerbork Synthesis Radio Telescope. We present improved timing solutions and 30, mostly small, new glitches.
Stappers, B. W.; id_orcid, Stappers, B.W., B. W. Stappers, Janssen, G. H., G. H. Janssen, Janssen, G.H.   +5 more
core   +1 more source

Generation of pulsar radio emission [PDF]

International Astronomical Union Colloquium, 2000
Abstract The generation of radio emission from plasma waves excited by two-stream instability in pulsar magnetospheres is considered. Induced scattering transforms the excited longitudinal waves into waves that escape freely in the form of transverse electromagnetic waves.
openaire   +1 more source

High-sensitivity searches for radio pulsars [PDF]

, 1995
Radio pulsars are rapidly spinning, highly magnetized neutron stars which emit beams of radio waves and are observed to pulse when the beam crosses the Earth.
Ray, Paul Shelton
core   +1 more source

Grafting Nanolayers of Ni and Co Catalysts Around the Edges of Hierarchical Zeolite 13X by Leveraging the Crystal's Defects for CO2 Methanation

Carbon Energy, EarlyView.
The deactivation of nickel‐based catalysts at high temperatures poses a significant challenge in CO2 methanation processes. To address this, a strong metal–support interaction between nickel and the support was engineered by exploiting the crystal defects present in hierarchical porous zeolite 13X.
Nasir Shezad, Muddasar Safdar, Shaojiang Chen, Cheuk‐Wai Tai, Harvey Arellano‐García, Dong‐Kyun Seo, Peizhong Feng, Farid Akhtar   +7 more
wiley   +1 more source

A relativistic positioning system exploiting pulsating sources for navigation across the Solar System and beyond [PDF]

, 2011
We introduce an operational approach to the use of pulsating sources, located at spatial infinity, for defining a relativistic positioning and navigation system, based on the use of null four-vectors in a flatMinkowskian spacetime.
Capolongo, Emiliano, Tartaglia, Angelo, Ruggiero, Matteo Luca   +2 more
core  

A Search for Gravitational Waves from Perturbed Black Hole Ringdowns in LIGO Data [PDF]

, 2008
According to General Relativity a perturbed black hole will return to a stable configuration by the emission of gravitational radiation in a superposition of quasi-normal modes. Such a perturbation will occur due to the coalescence of a black hole binary,
Goggin, Lisa Maria
core   +1 more source

General-relativistic curvature of pulsar vortex structure [PDF]

Astronomy Letters, 2001
18 pages, 1 ...
openaire   +2 more sources