A brief history of gravitational wave research

Chen, Chiang-Mei; Nester, James M.; Ni, Wei Tou

doi:10.1016/j.cjph.2016.10.014

Cited by 24 publications

(24 citation statements)

References 192 publications

(231 reference statements)

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“…The velocity of the GWs changes correspondingly according to (11), which also depends on source distance D, frequency f , and strain h. Throughout the paper, we use following illustrative configurations [32] of different GW detectors to present different GW sources :…”

Section: Superfluid Phase Without Baryonsmentioning

confidence: 99%

Gravitational wave as probe of superfluid dark matter

2018

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In recent years, superfluid dark matter (SfDM) has become a competitive model of emergent modified Newtonian dynamics (MOND) scenario: MOND phenomenons naturally emerge as a derived concept due to an extra force mediated between baryons by phonons as a result of axionlike particles condensed as superfluid at galactic scales; Beyond galactic scales, these axionlike particles behave as normal fluid without phonon-mediated MOND-like force between baryons, therefore SfDM also maintains the usual success of ΛCDM at cosmological scales. In this paper, we use gravitational waves (GWs) to probe the relevant parameter space of SfDM. GWs through Bose-Einstein condensate (BEC) could propagate with a speed slightly deviation from the speed-of-light due to the change in the effective refractive index, which depends on the SfDM parameters and GW-source properties. We find that Five hundred meter Aperture Spherical Telescope (FAST), Square Kilometre Array (SKA) and International Pulsar Timing Array (IPTA) are the most promising means as GW probe of relevant parameter space of SfDM. Future space-based GW detectors are also capable of probing SfDM if a multimessenger approach is adopted.

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Section: Superfluid Phase Without Baryonsmentioning

confidence: 99%

Gravitational wave as probe of superfluid dark matter

2018

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“…Besides LISA and other similar projects [17,18], Luo et al [19] have also proposed the TianQin mission, a space-borne detector of gravitational waves in the millihertz frequency ranges. TianQin is planning to launch three spacecraft into the orbits around the Earth.…”

Section: Introductionmentioning

confidence: 99%

Modeling and Analysis of the Noise Performance of the Capacitive Sensing Circuit with a Differential Transformer

et al. 2019

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Capacitive sensing is a key technique to measure the test mass movement with a high resolution for space-borne gravitational wave detectors, such as Laser Interferometer Space Antenna (LISA) and TianQin. The capacitance resolution requirement of TianQin is higher than that of LISA, as the arm length of TianQin is about 15 times shorter. In this paper, the transfer function and capacitance measurement noise of the circuit are modeled and analyzed. Figure-of-merits, including the product of the inductance L and the quality factor Q of the transformer, are proposed to optimize the transformer and the capacitance measurement resolution of the circuit. The LQ product improvement and the resonant frequency augmentation are the key factors to enhance the capacitance measurement resolution. We fabricated a transformer with a high LQ product over a wide frequency band. The evaluation showed that the transformer can generate a capacitance resolution of 0.11 aF/Hz1/2 at a resonant frequency of 200 kHz, and the amplitude of the injection wave would be 0.6 V. This result supports the potential application of the proposed transformer in space-borne gravitational wave detection and demonstrates that it could relieve the stringent requirements for other parameters in the TianQin mission.

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“…Foram o GEO600 na Alemanha [45], o VIRGO na Itália [46] e o LIGO (Laser Interferometer Gravitational-Wave Observatory) nos EUA [47]. gravitacionais por Einstein até a primeira detecção, ver [36,50].…”

Section: Figuraunclassified

“…50) sendo que o termo de primeira ordemé nulo quando a verossimilhançaé máxima. SendoD = {x 1 , x 2 , • • • , x M )um conjunto de M medidas, ao tomarmos o valor esperado de ln L(Θ) ao longo do conjunto D quando M → ∞, identificamos a matriz de Fisher como o valor esperado do segundo termo da expansão (5.50), i.e.,…”

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Investigação da física do setor escuro com ondas gravitacionais

Bachega¹

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In the end of 1990s it was found that the universe is undergoing an accelerated expansion phase, suggesting the presence of a mysterious component called dark energy, which with dark matter forms the so-called dark sector of the universe, responsible for about 95 % of its content. Gravitational waves can be used to investigate this dark sector, complementing current electromagnetic observables such as type Ia supernova and cosmic microwave background. From the amplitude of the gravitational wave it is possible to measure the luminosity distance d L from the generating source and with the electromagnetic counterpart it is possible to determine the redshift z and thus build a d L − z diagram and measure the cosmic expansion history. Thus, gravitational waves can be used as standard sirens. The first standard siren detected was gravitational waves originating from the collision of a pair of neutron stars on August 17, 2017 (GW170817) where the electromagnetic counterpart (GRB170817A) was also detected. With this event it was possible to determine that the propagation velocity of gravitational waves and the velocity of light differ in one part by 10 15 , which allowed us to restrict in many models that tried to explain the cosmic acceleration through theories of modified gravitation. In this thesis I will present two applications. The first will be about a dark-sector unification model from Horndeski Theory, and how event GW170817 imposed strong constraints on this model. The second will be about simulating standard siren catalogs that could be detected by the future Einstein Telescope and how these future data could constrain dark sector interaction.

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A brief history of gravitational wave research

Cited by 24 publications

References 192 publications

Gravitational wave as probe of superfluid dark matter

Gravitational wave as probe of superfluid dark matter

Modeling and Analysis of the Noise Performance of the Capacitive Sensing Circuit with a Differential Transformer

Investigação da física do setor escuro com ondas gravitacionais

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