S. M. Aston
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View article: Upper Limits on the Isotropic Gravitational-Wave Background from the first part of LIGO, Virgo, and KAGRA's fourth Observing Run
Upper Limits on the Isotropic Gravitational-Wave Background from the first part of LIGO, Virgo, and KAGRA's fourth Observing Run Open
We present results from the search for an isotropic gravitational-wave background using Advanced LIGO and Advanced Virgo data from O1 through O4a, the first part of the fourth observing run. This background is the accumulated signal from u…
View article: Sensors and actuators for the advanced LIGO A+ upgrade
Sensors and actuators for the advanced LIGO A+ upgrade Open
Advanced Laser Interferometer Gravitational-wave Observatory (LIGO A+) is a major upgrade to LIGO—the Laser Interferometer Gravitational-wave Observatory. For the A+ project, we have developed, produced, and characterized sensors and elect…
View article: Search for gravitational waves from Scorpius X-1 with a hidden Markov model in O3 LIGO data
Search for gravitational waves from Scorpius X-1 with a hidden Markov model in O3 LIGO data Open
Results are presented for a semicoherent search for continuous gravitational waves from the low-mass x-ray binary Scorpius X-1, using a hidden Markov model (HMM) to allow for spin wandering. This search improves on previous HMM-based searc…
View article: LIGO detector characterization in the second and third observing runs
LIGO detector characterization in the second and third observing runs Open
\n The characterization of the Advanced LIGO detectors in the second and third observing runs has increased the sensitivity of the instruments, allowing for a higher number of detectable gravitational-wave signals, and provided confirmatio…
View article: Search for anisotropic gravitational-wave backgrounds using data from Advanced LIGO and Advanced Virgo’s first three observing runs
Search for anisotropic gravitational-wave backgrounds using data from Advanced LIGO and Advanced Virgo’s first three observing runs Open
We report results from searches for anisotropic stochastic gravitational-wave backgrounds using data from the first three observing runs of the Advanced LIGO and Advanced Virgo detectors. For the first time, we include Virgo data in our an…
View article: GW170814: A Three-Detector Observation of Gravitational Waves from a Binary Black Hole Coalescence
GW170814: A Three-Detector Observation of Gravitational Waves from a Binary Black Hole Coalescence Open
On August 14, 2017 at 10∶30:43 UTC, the Advanced Virgo detector and the two Advanced LIGO detectors coherently observed a transient gravitational-wave signal produced by the coalescence of two stellar mass black holes, with a false-alarm r…
View article: Upper Limits on Gravitational Waves from Scorpius X-1 from a Model-based Cross-correlation Search in Advanced LIGO Data
Upper Limits on Gravitational Waves from Scorpius X-1 from a Model-based Cross-correlation Search in Advanced LIGO Data Open
We present the results of a semicoherent search for continuous gravitational waves from the low-mass X-ray binary Scorpius X-1, using data from the first Advanced LIGO observing run. The search method uses details of the modeled, parametri…
View article: Small optic suspensions for Advanced LIGO input optics and other precision optical experiments
Small optic suspensions for Advanced LIGO input optics and other precision optical experiments Open
We report on the design and performance of small optic suspensions developed to suppress seismic motion of out-of-cavity optics in the input optics subsystem of the Advanced Laser Interferometer Gravitational Wave Observatory. These compac…
View article: Optical read-out techniques for the control of test-masses in gravitational wave observatories
Optical read-out techniques for the control of test-masses in gravitational wave observatories Open
This thesis discusses the development of optical read-out techniques, including a simple shadow sensor and a more elaborate compact homodyne interferometer, known as EUCLID. Both of these sensors could be utilised as part of a seismic isol…