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1. |
Record Nr. |
UNINA9911020425003321 |
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Autore |
Polini Eleonora |
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Titolo |
Broadband Quantum Noise Reduction in Advanced Virgo Plus : From Frequency-Dependent Squeezing Implementation to Detection Losses and Stray Light Mitigation / / by Eleonora Polini |
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Pubbl/distr/stampa |
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Cham : , : Springer Nature Switzerland : , : Imprint : Springer, , 2025 |
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ISBN |
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Edizione |
[1st ed. 2025.] |
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Descrizione fisica |
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1 online resource (321 pages) |
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Collana |
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Springer Theses, Recognizing Outstanding Ph.D. Research, , 2190-5061 |
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Disciplina |
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Soggetti |
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Gravitation |
Quantum optics |
Astrophysics |
Optoelectronic devices |
Gravitational Physics |
Quantum Optics |
Optoelectronic Devices |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Nota di contenuto |
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Gravitational waves -- Ground based gravitational waves detectors -- Theory of quantum light in gravitational waves detectors -- Quantum noise reduction system overview in Advanced Virgo Plus -- Quantum noise reduction system commissioning -- Stray light in gravitational waves detectors -- Ghost beams study and mitigation -- Active control of scattered light on the FDS system -- Matching of the squeezing beam to the ITF -- New high finesse Output Mode Cleaner for Advanced Virgo Plus. |
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Sommario/riassunto |
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This book presents the first implementation of frequency-dependent squeezing in the Virgo gravitational wave detector, a technique that reduces quantum noise across the entire detection band. By lowering noise, it enhances Virgo’s ability to observe the universe. It provides a detailed account of the experimental optical system—spanning hundreds of meters—and the measurement campaign that led to the first observation of frequency-dependent squeezing, with ellipse |
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rotation occurring at the target frequency of a few tens of Hz. Additionally, the book covers the characterization and commissioning of a new Output Mode Cleaner cavity in Virgo to minimize optical losses on squeezed states. Finally, it examines the impact of stray light noise at low frequencies and explores mitigation strategies to improve detector sensitivity. |
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2. |
Record Nr. |
UNINA9910972226303321 |
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Autore |
Cook Michael <1940-> |
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Titolo |
Commanding right and forbidding wrong in Islamic thought / / Michael Cook |
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Pubbl/distr/stampa |
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Cambridge : , : Cambridge University Press, , 2000 |
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ISBN |
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9780511082474 |
0511082479 |
9781107118263 |
1107118263 |
9781280162336 |
1280162333 |
9780511118098 |
0511118090 |
9780511018688 |
0511018681 |
9780511155895 |
0511155891 |
9780511304019 |
0511304013 |
9780511497452 |
0511497458 |
9780511048807 |
0511048807 |
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Edizione |
[1st ed.] |
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Descrizione fisica |
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1 online resource (xvii, 702 pages) : digital, PDF file(s) |
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Disciplina |
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Soggetti |
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Islamic ethics |
Religious life - Islam |
Islam - Doctrines |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Title from publisher's bibliographic system (viewed on 05 Oct 2015). |
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Nota di bibliografia |
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Includes bibliographical references (p. [604]-[660] and index. |
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Nota di contenuto |
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pt. 1. Introductory -- pt. 2. The Hanbalites -- pt. 3. The Mu'tazilites and Shi'ites -- pt. 4. Other sects and schools -- pt. 5. Beyond classical Islam. |
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Sommario/riassunto |
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What kind of duty do we have to try to stop other people doing wrong? The question is intelligible in just about any culture, but few of them seek to answer it in a rigourous fashion. The most striking exception is found in the Islamic tradition, where 'commanding right' and 'forbidding wrong' is a central moral tenet already mentioned in the Koran. As an historian of Islam whose research has ranged widely over space and time, Michael Cook is well placed to interpret this complex subject. His book represents the first sustained attempt to map the history of Islamic reflection on this obligation. It covers the origins of Muslim thinking about 'forbidding wrong', the relevant doctrinal developments over the centuries, and its significance in Sunni and Shi'ite thought today. In this way the book contributes to the understanding of Islamic thought, its relevance to contemporary Islamic politics and ideology, and raises fundamental questions for the comparative study of ethics. |
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