Results 171 to 180 of about 870,817 (352)

Differential BroadBand (1-16 GHz) MMIC GaAs mHEMT Low-Noise Amplifier for Radio Astronomy Applications and Sensing. [PDF]

open access: yesSensors (Basel)
Jimenez-Martin JL   +5 more
europepmc   +1 more source

Two Micron‐Size Dark Dimensions

open access: yesFortschritte der Physik, EarlyView.
Abstract Two extra dimensions of micron scale might simultaneously address the gauge and cosmological hierarchy problems. In this paper various observational bounds in scenarios with one and two large extra dimensions are examined, to see if they are compatible with the micron scale.
Luis A. Anchordoqui   +2 more
wiley   +1 more source

Quasi-periodic oscillations of GHz-band polarization in a black hole. [PDF]

open access: yesNat Commun
Wang W   +12 more
europepmc   +1 more source

Maximum Mass Limit of Generalized MIT Compact Star: A Theoretical Study of Thin Shell Dynamics and Gravitational Lensing

open access: yesFortschritte der Physik, EarlyView.
Abstract In this study, the properties, equilibrium, and stability of compact objects within the framework of teleparallel gravity with the generalized MIT bag model are investigated. By incorporating the modified field equations, the influence of the generalized bag constant on the structure and physical characteristics of quark stars and neutron ...
Sayantan Ghosh   +2 more
wiley   +1 more source

Radio Astronomy Systems for Undergraduates [PDF]

open access: bronze, 1995
Aa. Sandqvist, Magnus Hagström
openalex   +1 more source

Evaluation of video evidence of possible ball lightning

open access: yesQuarterly Journal of the Royal Meteorological Society, EarlyView.
We analyze images of possible ball lightning that appeared less than 10 m from a video camera. The objects' velocity and estimated brightness all agree with typical eyewitness accounts of ball lightning. Though there is an alternative explanation that the objects were sparks from a power‐line arc, we describe analytical techniques that assist in ...
K. Stephan, R. Sonnenfeld, J. Bertoloni
wiley   +1 more source

Tracing the heliospheric magnetic field via anisotropic radio-wave scattering. [PDF]

open access: yesSci Rep
Clarkson DL   +6 more
europepmc   +1 more source

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