Searching for gravitational waves from known pulsars at once and twice the spin frequency

@article{Bejger2013SearchingFG,
  title={Searching for gravitational waves from known pulsars at once and twice the spin frequency},
  author={Michał Bejger and Andrzej Kr{\'o}lak},
  journal={Classical and Quantum Gravity},
  year={2013},
  volume={31}
}
The existence of a superfluid core in the interior of a rotating neutron star may have an influence on its gravitational wave emission. In addition to the usually-assumed pure quadrupole radiation with the gravitational wave frequency at twice the spin frequency, a frequency of rotation itself may also be present in the gravitational wave spectrum. We study the parameters of a general model for such emission, compare it with previously proposed, simpler models, discuss the feasibility of the… 
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9 Citations
Background Citations
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Methods Citations
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Results Citations
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9 Citations

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18 References

Gravitational wave emission from rotating superfluid neutron stars

In this paper, we investigate the effect of a pinned superfluid component on the gravitational wave emission of a steadily rotating deformed neutron star. We show that the superfluid pinning allows…

SEARCHES FOR GRAVITATIONAL WAVES FROM KNOWN PULSARS WITH SCIENCE RUN 5 LIGO DATA

We present a search for gravitational waves from 116 known millisecond and young pulsars using data from the fifth science run of the LIGO detectors. For this search, ephemerides overlapping the run…

Setting upper limits on the strength of periodic gravitational waves from PSR J1939+2134 using the first science data from the GEO 600 and LIGO detectors

Data collected by the GEO 600 and LIGO interferometric gravitational wave detectors during their first observational science run were searched for continuous gravitational waves from the pulsar…

Gravitational waves from rotating and precessing rigid bodies - Simple models and applications to pulsars

An axially symmetric, torque-free rigid body, rotating and precessing, emits gravitational quadrupole radiation at two frequencies, ..omega.. and 2..omega.., corresponding to the l = 2, m = 1,2…

Limits on gravitational-wave emission from selected pulsars using LIGO data.

The unprecedented sensitivity of the detectors allows us to set strain upper limits as low as a few times 10(-24), which translate into limits on the equatorial ellipticities of the pulsars, which are smaller than 10(-5) for the four closest pulsars.

Gravitational waves from pulsars: Emission by the magnetic field induced distortion

The gravitational wave emission by a distorted rotating fluid star is computed. The distortion is supposed to be symmetric around some axis inclined with respect to the rotation axis. In the general…

Data analysis of gravitational-wave signals from spinning neutron stars. I. The signal and its detection

We present a theoretical background for the data analysis of the gravitational-wave signals from spinning neutron stars for Earth-based laser interferometric detectors. We introduce a detailed model…

Gravitational waves from neutron stars: promises and challenges

We discuss different ways that neutron stars can generate gravitational waves, describe recent improvements in modelling the relevant scenarios in the context of improving detector sensitivity, and…

Upper limits on gravitational wave emission from 78 radio pulsars (Physical Review D - Particles, Fields, Gravitation and Cosmology (2007) 76, (042001))

This paper was published online on 3 August 2007 with a formatting error in the fifty-first affiliation in the author list.The affiliation should read as ‘‘University of Western Australia, Crawley,…

Freely precessing neutron stars: model and observations

We present a model of a freely precessing neutron star, which is then compared against pulsar observations. The aim is to draw conclusions regarding the structure of the star, and to test theoretical…