Results 11 to 20 of about 48,097 (289)
X-ray reverberation around accreting black holes
Astronomy and Astrophysics Review, 2014 Luminous accreting stellar mass and supermassive black holes produce power-law continuum X-ray emission from a compact central corona. Reverberation time lags occur due to light travel time-delays between changes in the direct coronal emission and ...
Cackett, E. M. +4 more
core +4 more sources
Reverberation time measurements in non-diffuse acoustic field by the modal reverberation time
Applied Acoustics, 2016 Abstract The increasing presence of low frequency sources and the lack of acoustic standard measurement procedures make the extension of reverberation time measurements to frequencies below 100 Hz necessary. In typical ordinary rooms with volumes between 30 m 3 and 200 m 3 the sound field is non-diffuse at such low frequencies, entailing ...
Prato, A. +2 more
openaire +6 more sources
Research on reverberation characteristics analysis and suppression methods for active continuous detection [PDF]
MATEC Web of Conferences, 2019 Compared with the traditional active detection with monopulse periodic emission mode, active continuous detection has the advantages of large emission duty ratio and continuous acquisition of process information.
Chen Tuo, Ma Qiming, Zhou Zheyuan, Lu He
doaj +1 more source
Applied Sciences, 2021 The measurement of reverberation time is an essential procedure for the characterization of the acoustic performance of rooms. The values returned by these measurements allow us to predict how the sound will be transformed by the walls and furnishings of
Giuseppe Ciaburro, Gino Iannace
doaj +1 more source
BIM-based reverberation time analysis [PDF]
Journal of Information Technology in Construction, 2021 Building Information Modeling (BIM) can store information of building elements and provide a computational platform for physical analyses for building systems. BIM can resolve several problems throughout various phases of design (as well as construction and operation).
Mazdak Nik-Bakht +2 more
openaire +1 more source
Reverberation-Time Meter [PDF]
The Journal of the Acoustical Society of America, 1939 A portable direct-reading apparatus for the measurement of rate of decay of sound will be described.
openaire +1 more source
Effects of virtual acoustics on dynamic auditory distance perception [PDF]
, 2017 Sound propagation encompasses various acoustic phenomena including reverberation. Current virtual acoustic methods, ranging from parametric filters to physically-accurate solvers, can simulate reverberation with varying degrees of fidelity.
Atul Rungta +8 more
core +3 more sources
A Revised Broad-Line Region Radius and Black Hole Mass for the Narrow-Line Seyfert 1 NGC 4051 [PDF]
, 2008 We present the first results from a high sampling rate, multi-month reverberation mapping campaign undertaken primarily at MDM Observatory with supporting observations from telescopes around the world.
A. E. Watkins +81 more
core +5 more sources
Tracing the reverberation lag in the hard state of black hole X-ray binaries [PDF]
, 2015 We report results obtained from a systematic analysis of X-ray lags in a sample of black hole X-ray binaries, with the aim of assessing the presence of reverberation lags and studying their evolution during outburst.
De Marco, B. +3 more
core +2 more sources
Process system engineering in biodiesel production: a review [PDF]
, 2013 Biodiesel is fast becoming a popular alternative to fossil fuels, as it is natural, renewable and has low toxic emissions. Strategies that have been adopted to ensure continued growth of the biodiesel industry are policy development, reduction of ...
Kamarudin, S.K. +3 more
core +2 more sources