V. V. Frolov

TL;DR: In this article, a large set of cross sections for semi-inclusive electroproduction of charged pions (π±) from both proton and deuteron targets was measured, showing the onset of quark-hadron duality in this process, and the relation of this phenomenon to the high-energy factorization ansatz of electron-quark scattering and subsequent quark→pion production mechanisms.

TL;DR: The first science run of the LIGO and GEO gravitational wave detectors presented the opportunity to test methods of searching for gravitational waves from known pulsars as discussed by the authors, and they presented new direct upper limits on the strength of waves from the pulsar PSR J1939+2134 using two independent analysis methods.

TL;DR: All-sky search for continuous gravitational waves from isolated neutron stars in the early O3 LIGO data finds no evidence of such signals and sets stringent upper limits on their strengths.

TL;DR: In this paper, the resonant frequency of a 2.7 kg pendulum mode was dynamically shifted to lie within this optimal band, where its effective temperature falls as low as 1.4 μK and its occupation number reaches about 200 quanta.