Search for eccentric black hole coalescences during the third observing run of LIGO and Virgo

Despite the growing number of confident binary black hole coalescences observed through gravitational waves so far, the astrophysical origin of these binaries remains uncertain. Orbital eccentricity is one of the clearest tracers of binary formation channels. Identifying binary eccentricity, however, remains challenging due to the limited availability of gravitational waveforms that include effects of eccentricity. Here, we present observational results for a waveform-independent search sensitive to eccentric black hole coalescences, covering the third observing run (O3) of the LIGO and Virgo detectors. We identified no new high-significance candidates beyond those that were already identified with searches focusing on quasi-circular binaries. We determine the sensitivity of our search to high-mass (total mass M>70 M⊙) binaries covering eccentricities up to 0.3 at 15 Hz orbital frequency, and use this to compare model predictions to search results. Assuming all detections are indeed quasi-circular, for our fiducial population model, we place an upper limit for the merger rate density of high-mass binaries with eccentricities 0<e≤0.3 at 0.33 Gpc−3 yr−1 at 90\% confidence level

Ultralight vector dark matter search using data from the KAGRA O3GK run

Among the various candidates for dark matter (DM), ultralight vector DM can be probed by laser interferometric gravitational wave detectors through the measurement of oscillating length changes in the arm cavities. In this context, KAGRA has a unique feature due to differing compositions of its mirrors, enhancing the signal of vector DM in the length change in the auxiliary channels. Here we present the result of a search for U(1)B−L gauge boson DM using the KAGRA data from auxiliary length channels during the first joint observation run together with GEO600. By applying our search pipeline, which takes into account the stochastic nature of ultralight DM, upper bounds on the coupling strength between the U(1)B−L gauge boson and ordinary matter are obtained for a range of DM masses. While our constraints are less stringent than those derived from previous experiments, this study demonstrates the applicability of our method to the lower-mass vector DM search, which is made difficult in this measurement by the short observation time compared to the auto-correlation time scale of DM

Un’architettura per la navigazione multidimensionale dei dati delle università

Da circa 10 anni, il CASPUR collabora con l’Ufficio di statistica del MIUR per la gestione delle banche dati. Il compito principale dell’Ufficio statistico è quello di rilevare, elaborare, diffondere e archiviare dati statistici che interessano i settori dell’Università Italiana, l’Alta Formazione Artistico Musicale e la Ricerca. Nell’ultimo anno il CASPUR ha realizzato un sistema per l’accesso ai dati acquisiti in questi anni da parte delle diverse tipologie di utenti del MIUR

Servizi ICT al MIUR

Le attività istituzionali del CASPUR si rivolgono alle Università consorziate ed al Ministero dell’Istruzione, dell’Università e della Ricerca (MIUR). Il CASPUR è presente presso la sede del MIUR di Piazza Kennedy 20 da oltre quattordici anni, garantendo, con adeguate professionalità e competenze, la continuità dei servizi informatici di base e lo sviluppo dell’infrastruttura ICT. Il supporto del CASPUR presso il MIUR è organizzato in due aree funzionali: l’area Sistemi e quella Sviluppo Software. La prima si occupa delle attività di gestione, manutenzione e presidio della sala macchina e provvede alla connettività ed alla sicurezza dell’infrastruttura di rete locale. Mentre l’area funzionale Sviluppo Software si occupa delle attività di redazione tecnica dei siti web del MIUR, della realizzazione di applicazioni software ed offre consulenza e formazione agli utenti del Ministero sull’uso dei prodotti in dotazione

More than a Sonic Wave: Sound as/and Cultural Communication

Der von Anna Symanczyk, Daniela Wagner und Miriam Wendling in der Schriftenreihe der Isa-Lohmann-Siems-Stiftung herausgegebene multidisziplinäre Sammelband Klang – Kontakte. Kommunikation, Konstruktion und Kultur von Klängen untersucht in 13 inhaltlich, methodisch und historisch sehr unterschiedlich verorteten Beiträgen besonders den vermittelnden Aspekt von Klängen in kulturellen Kommunikationsprozessen. Hierbei steht vornehmlich Transmedialität, d.h. die Transformation und Darstellung von Klängen in Sprache, Text und (Ab-)Bild im Zentrum des Forschungsinteresses. Als mehrheitlich geisteswissenschaftlich geprägt ergänzt dieser Band das im Vergleich zur Musikpsychologie und (Psycho-) Akustik bisher noch verhältnismäßig junge Forschungsfeld der Klang- bzw. Sound Studies und bietet disziplinspezifische Anregungen.Klang – Kontakte. Kommunikation, Konstruktion und Kultur von Klängen (Isa-Lohmann-Siems publication series, Vol. 9) is a multidisciplinary publication edited by Anna Symanczyk, Daniela Wagner, und Miriam Wendling. 13 contributions differing in methodological, historical, and content-related perspectives aim at understanding and exploring mediating aspects of sound in cultural communication processes. Within this context, it is especially transformation into and representation of sounds in language, text, and images that are key subjects of research in this volume. As a humanities-based anthology, this volume supplements the research field of sound studies, which is relatively young compared to the fields of the psychology of music and psycho-acoustics, and offers discipline-specific impulses