1,721,334 research outputs found
All-sky search for short gravitational-wave bursts in the third Advanced LIGO and Advanced Virgo run
No full textConstraints from LIGO O3 Data on Gravitational-wave Emission Due to R-modes in the Glitching Pulsar PSR J0537-6910
No full textSearch for Lensing Signatures in the Gravitational-Wave Observations from the First Half of LIGO-Virgo's Third Observing Run
No full textTemperature-mediated excitation of defect modes in a periodic structure at terahertz frequencies
No full textThe dependence on temperature of a defect mode of a periodic dielectric multilayer is studied in the terahertz range by using the characteristic matrix method. The structure analyzed is composed of alternating layers of silica and polymethylpentene. The material of the defect is the indium antimonide (InSb), which has a permittivity that is temperature dependent causing a blueshift of the defect mode as the temperature rises. Although at terahertz frequencies, the InSb is a dissipative material, choosing appropriately the thickness of the defect results in a defect mode with a transmittance that, throughout the range explored, always remains above 0.9 with a maximum of 0.9914
Cantor Dielectric Filters in Rectangular Waveguides
No full textA triadic Cantor fractal multi-layer is a stack of two different dielectric materials whose thicknesses are determined according to the triadic Cantor fractal scheme. When inserted in a rectangular waveguide, the spectral response of a triadic Cantor multi-layer can be tailored to feature a narrow single transmission peak in the waveguide single-mode frequency range, with a low insertion loss and a high rejection level of forbidden frequencies. The experimental characterization of alumina-polystyrene and plexiglass-polystyrene Cantor multi-layers inserted in a WR90 waveguide (Hewlett-Packard, USA) matches thoroughly with the results of the theoretical modeling and demonstrates that triadic Cantor multi-layers can be used to realize feasible narrow-band microwave filters
Searches for continuous gravitational waves from young supernova remnants in the early third observing run of advanced LIGO and Virgo
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Narrowband Searches for Continuous and Long-duration Transient Gravitational Waves from Known Pulsars in the LIGO-Virgo Third Observing Run
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