Results 21 to 30 of about 1,665 (178)

Materials and Music: Selective Imperfection as a Generative Framework for Analysis, Creativity and Discovery

open access: yesInterdisciplinary Materials, EarlyView.
Vibrations in matter, from spider webs to molecules, water to flames, share a grammar with music. We propose that creativity emerges when constraints force expansion beyond existing possibilities. Selective imperfection restores balance, enabling invention.
Markus J. Buehler
wiley   +1 more source

Quantum gravity and gravitational-wave astronomy [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics, 2019
29 pages, 3 figures, 1 table. Invited chapter for C. Bambi, S. Katsanevas and K.D. Kokkotas (eds.), "Handbook of Gravitational Wave Astronomy" (Springer, Singapore, 2021). Part of the text has been adapted from arXiv:1904.00384, 1907.02489 and 2012.00170. v2: minor corrections.
Calcagni, Gianluca   +5 more
openaire   +9 more sources

Revisiting the equation of state of dark energy from DESI BAO with SNe Ia and CMB

open access: yesEuropean Physical Journal C: Particles and Fields
The Dark Energy Spectroscopic Instrument (DESI) measurements of baryon acoustic oscillations (BAO) have recently shown a mild preference for dynamical dark energy over the standard $$\mathrm \Lambda $$ Λ CDM model. In this paper, we analyze the $$w_0w_a$$
Jie Zheng   +3 more
doaj   +1 more source

A High-Finesse Suspended Interferometric Sensor for Macroscopic Quantum Mechanics with Femtometre Sensitivity

open access: yesSensors
We present an interferometric sensor for investigating macroscopic quantum mechanics on a table-top scale. The sensor consists of a pair of suspended optical cavities with finesse over 350,000 comprising 10 g fused silica mirrors.
Jiri Smetana   +3 more
doaj   +1 more source

Surrogate Forward Models for Population Inference on Compact Binary Mergers

open access: yesThe Astrophysical Journal, 2023
Rapidly growing catalogs of compact binary mergers from advanced gravitational wave detectors allow us to explore the astrophysics of massive stellar binaries.
Jeff Riley, Ilya Mandel
doaj   +1 more source

From Flybys to Sample Return: A Review of Space Probes and Robotic Sampling Technologies for Small Bodies

open access: yesJournal of Field Robotics, EarlyView.
ABSTRACT As a crucial puzzle piece of deep space exploration, exploring small bodies can provide significant scientific insights and valuable mineral resources. Unlike missions to the Moon and Mars, small‐body missions pose distinct technical challenges, including communication delays, weak gravity, and uncertain environments. This paper reviews a full
Xin Zhang   +3 more
wiley   +1 more source

Parallelized inference for gravitational-wave astronomy [PDF]

open access: yesPhysical Review D, 2019
Bayesian inference is the workhorse of gravitational-wave astronomy, for example, determining the mass and spins of merging black holes, revealing the neutron star equation of state, and unveiling the population properties of compact binaries. The science enabled by these inferences comes with a computational cost that can limit the questions we are ...
Colm Talbot   +3 more
openaire   +3 more sources

Thermal histories of El Médano 300 (EM 300) and Northwest Africa 8155 (NWA 8155): Implications for the diversity of IAB‐ungrouped iron meteorites and their parent bodies

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract This study provides the first petrographic, crystallographic, and chemical comparison between El Médano 300 (EM 300) and Northwest Africa 8155 (NWA 8155), two particular IAB‐ungrouped iron meteorites. Both contain exceptionally large graphite nodules and “flowers”, providing unique insights into carbon behavior in metallic melts and cooling ...
L. Perez   +8 more
wiley   +1 more source

Evidence for a Correlation between Binary Black Hole Mass Ratio and Black Hole Spins

open access: yesThe Astrophysical Journal, 2023
The astrophysical origins of the binary black hole systems seen with gravitational waves are still not well understood. However, features in the distribution of black hole masses, spins, redshifts, and eccentricities provide clues into how these systems ...
Christian Adamcewicz   +2 more
doaj   +1 more source

A Magnetospheric Dichotomy for Pulsars with Extreme Inclinations

open access: yesUniverse, 2021
In this work, we expand on a comment by Lyne et al. (2017), that intermittent pulsars tend to congregate near a stripe in the logarithmic period versus period-derivative diagram.
Fan Zhang
doaj   +1 more source

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