Results 131 to 140 of about 1,721,894 (339)
Uncertainty principle from the noise of gravitons
European Physical Journal C: Particles and FieldsThe effect of the noise induced by gravitons in the case of a freely falling particle from the viewpoint of an external observer has been recently calculated in Phys. Rev. D 107, 066024 (2023) .
Soham Sen, Sunandan Gangopadhyay
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Logarithmic and Strong Coupling Models in Weyl‐Type f(Q,T)$f(Q,T)$ Gravity
Annalen der Physik, Volume 538, Issue 1, January 2026.This work explores Weyl‐type f(Q,T) gravity using recent observational datasets — CC, Pantheon+, Union 3.0, and DESI DR2. Through MCMC analysis of logarithmic and strong coupling models, the study reveals a transition from deceleration to acceleration, quintessence‐to‐phantom dynamics, and late‐time consistency with LCDM, offering a geometry‐driven ...
Rahul Bhagat, S. K. Tripathy, B. Mishra
wiley +1 more source
Fast Transitions of X-Ray Variability in the Neutron Star Low-mass X-Ray Binary Cygnus X-2
The Astrophysical JournalWe present a spectral-timing analysis of two NICER observations of the weakly magnetized neutron star low-mass X-ray binary Cygnus X-2. During these observations, we detect a rapid transition from a narrow 50 Hz horizontal-branch oscillation (HBO) to a ...
Liang Zhang +14 more
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Insight-HXMT Research Progress Since 2023
Kongjian kexue xuebaoSince the launch in June 2017, Insight-HXMT has been in service smoothly in orbit and particularly productive in 2023 and 2024. Among a total number of 238 papers published so far based on Insight-HXMT data, 63 were published in 2023, and 32 in the early
ZHANG Shu, ZHANG Shuang-Nan
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HIGH ENERGY APPROACHES TO LOW ENERGY PHENOMENA IN ASTROPHYSICS [PDF]
, 2002 SAM M. AUSTIN
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Revisiting CN− Formation Mechanisms in Electron Collisions with Benzonitrile
ChemPhysChem, Volume 27, Issue 1, January 2026.This study explores negative ion formation via electron attachment, revealing CN− formation at 3.0 and 7–10 eV. Dissociation pathways are analyzed using G4(MP2) and CASPT2 calculations, highlighting the coupling between the π4* and σ* resonances critical for interstellar chemistry. Radiation‐induced processes in the aromatic cyano compound benzonitrile
Rodrigo Rodrigues +8 more
wiley +1 more source
High-energy astrophysics and the search for sources of gravitational waves. [PDF]
Philos Trans A Math Phys Eng Sci, 2018 O'Brien PT, Evans P.
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Heat Transfer, Volume 55, Issue 1, Page 764-774, January 2026.ABSTRACT This review explores the impact of gravitational instability on convective heat transfer, integrating existing research results and theoretical models. Gravitational instability is vital in promoting or hindering convective actions in different systems, such as atmospheric events, ocean currents, and industrial processes.
Hossam A. Nabwey +3 more
wiley +1 more source
High energy astrophysical processes
, 2005 We briefly review the high energy astrophysical processes that are related to the production of high energy $ $-ray and neutrino signals and are likely to be important for the energy loss of high and ultrahigh energy cosmic rays. We also give examples for neutrino fluxes generated by different astrophysical objects and describe the cosmological link ...
openaire +2 more sources