University of Portsmouth

About: University of Portsmouth is a education organization based out in Portsmouth, Portsmouth, United Kingdom. It is known for research contribution in the topics: Population & Galaxy. The organization has 5452 authors who have published 14256 publications receiving 424346 citations. The organization is also known as: Portsmouth and Gosport School of Science and Art & Portsmouth and Gosport School of Science and the Arts.

Michotte's experimental phenomenology of perception

Abstract: This volume of collected papers, with the accompanying essays by the editors, is the definitive source book for the work of this important experimental psychologist. Originally published in 1991, it offered previously inaccessible essays by Albert Michotte on phenomenal causality, phenomenal permanence, phenomenal reality, and perception and cognition. Within these four sections are the most significant and representative of the Belgian psychologist's research in the area of experimental phenomenology. Extremely insightful introductions by the editors are included that place the essays in context. Michotte's ideas have played an important role in much research on the development of perception, and his work on social perception continues to be influential in social psychology. The book also includes some lesser-known aspects of his work that are equally important; for example, a remarkable set of articles on pictorial analysis.

Sensitivity and performance of the Advanced LIGO detectors in the third observing run

Abstract: On April 1st, 2019, the Advanced Laser Interferometer Gravitational-Wave Observatory (aLIGO), joined by the Advanced Virgo detector, began the third observing run, a year-long dedicated search for gravitational radiation. The LIGO detectors have achieved a higher duty cycle and greater sensitivity to gravitational waves than ever before, with LIGO Hanford achieving angle-averaged sensitivity to binary neutron star coalescences to a distance of 111 Mpc, and LIGO Livingston to 134 Mpc with duty factors of 74.6% and 77.0% respectively. The improvement in sensitivity and stability is a result of several upgrades to the detectors, including doubled intracavity power, the addition of an in-vacuum optical parametric oscillator for squeezed-light injection, replacement of core optics and end reaction masses, and installation of acoustic mode dampers. This paper explores the purposes behind these upgrades, and explains to the best of our knowledge the noise currently limiting the sensitivity of each detector.