Results 61 to 70 of about 75,914 (210)

Unsupervised Machine Learning for Classifying CHIME Fast Radio Bursts and Investigating Empirical Relations

open access: yesThe Astrophysical Journal
Fast radio bursts (FRBs) are highly energetic millisecond-duration astrophysical phenomena typically categorized as repeaters or nonrepeaters. However, observational limitations may result in misclassifications, potentially leading to a higher proportion
Da-Chun Qiang   +3 more
doaj   +1 more source

On Gauge‐Invariant Entire Function Regulators and UV Finiteness in Non Local Quantum Field Theory

open access: yesAnnalen der Physik, Volume 538, Issue 4, April 2026.
We regulate the theory with an entire function of the covariant operator F(□/M∗2)$F(\square /M^{2}_{*})$. In the perturbative vacuum this becomes a momentum‐space factor F(−p2/M∗2)$F(-p^{2}/M^{2}_{*})$ that exponentially damps high momenta, most transparent after Wick rotation, rendering loop integrals UV finite.
J. W. Moffat, E. J. Thompson
wiley   +1 more source

Orbital Eccentricity in a Neutron Star–Black Hole Merger

open access: yesThe Astrophysical Journal Letters
The observation of gravitational waves (GWs) from merging black holes and neutron stars provides a unique opportunity to discern information about their astrophysical environment. Two signatures that are considered powerful tracers to distinguish between
Gonzalo Morras   +2 more
doaj   +1 more source

On-Ground Testing of Dual-Sided Release Mechanism of TianQin Test Mass Using a Pendulum

open access: yesSensors
The high-precision gravitational reference sensor, which hosts a heavy test mass (TM) surrounded by electrodes with a relatively large gap, is crucial in all high-sensitivity drag-free sensors.
Ji Wang   +8 more
doaj   +1 more source

The Impact of Angular Momentum Loss on the Outcomes of Binary Mass Transfer

open access: yesThe Astrophysical Journal, 2023
We use the rapid binary population synthesis code COMPAS to investigate commonly used prescriptions for the determination of mass transfer stability in close binaries and the orbital separations after stable mass transfer.
Reinhold Willcox   +3 more
doaj   +1 more source

Orbital evolution for extreme mass-ratio binaries: conservative self forces [PDF]

open access: yes, 2006
The conservative dephasing effects of gravitational self forces for extreme mass-ratio inspirals are studied. Both secular and non-secular conservative effects may have a significant effect on LISA waveforms that is independent of the mass ratio of the ...
Burko, Lior M.
core   +2 more sources

Universal Entanglement and an Information‐Complete Quantum Theory

open access: yesAdvanced Physics Research, Volume 5, Issue 4, April 2026.
This Perspective summarize an informationcomplete quantum theory which describes a fully quantum world without any classical systems and concepts. Here spacetime/gravity, having to be a physical quantum system, universally entangles matter (matter fermions and their gauge fields) as an indivisible trinity, and encodes information‐complete physical ...
Zeng‐Bing Chen
wiley   +1 more source

Multi-optimization for thermal deformation of gravitational wave telescope based on CFRP characteristics

open access: yesScientific Reports
Gravitational wave telescope place extremely high demands on structural thermal deformation, making material selection a critical issue. Carbon fiber reinforced polymer (CFRP) is an ideal choice for the support structure of telescope due to its low ...
Bohong Li   +6 more
doaj   +1 more source

Research on High-Stability Composite Control Methods for Telescope Pointing Systems under Multiple Disturbances

open access: yesSensors
During the operation of space gravitational wave detectors, the constellation configuration formed by three satellites gradually deviates from the ideal 60° angle due to the periodic variations in orbits.
Rui Zhang   +9 more
doaj   +1 more source

Otto Stern—An Involuntary Convert to Quantum Theory

open access: yesNatural Sciences, Volume 6, Issue 2, April 2026.
Otto Stern (1888–1969) at work in his Hamburg laboratory (circa 1930). ABSTRACT The bulk of experiments and observations that lined the path to quantum mechanics amounted to a backlog of data in need of explanation. A notable exception was the Stern–Gerlach experiment (SGE) designed to test the predictions of the old quantum theory as embodied by the ...
Bretislav Friedrich
wiley   +1 more source

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