Results 301 to 310 of about 804,926 (346)
Some of the next articles are maybe not open access.
Nature, 1975
IN the eccentric-orbit binary model1,2, a compact object is in an eccentric orbit around a more massive, slightly evolved star. If the compact object accretes mass from the stellar wind of the normal star, the accretion rate is time dependent, so that the resulting X-ray emission would show a maximum at periastron (in the absence of absorption ...
D. H. CLARK, J. H. PARKINSON
openaire +1 more source
IN the eccentric-orbit binary model1,2, a compact object is in an eccentric orbit around a more massive, slightly evolved star. If the compact object accretes mass from the stellar wind of the normal star, the accretion rate is time dependent, so that the resulting X-ray emission would show a maximum at periastron (in the absence of absorption ...
D. H. CLARK, J. H. PARKINSON
openaire +1 more source
Astrophysics and Space Science, 1976
A rocket observation of cosmic soft X-rays suggests the existence of transient, recurrent soft X-ray sources which are found variable during the flight time of the rocket. Some of the soft X-ray sources thus far reported are considered to be of this time. These sources are listed in Table I, and their positions are shown in Figure 2.
S. Hayakawa +3 more
openaire +1 more source
A rocket observation of cosmic soft X-rays suggests the existence of transient, recurrent soft X-ray sources which are found variable during the flight time of the rocket. Some of the soft X-ray sources thus far reported are considered to be of this time. These sources are listed in Table I, and their positions are shown in Figure 2.
S. Hayakawa +3 more
openaire +1 more source
Acoustic intensity measurements of transient noise sources
The Journal of the Acoustical Society of America, 1980The theoretical background to the measurement of sound energy flow generated by transient sources, such as impact machines, will be presented. Various means of implementing the estimation process will be discussed and reference will be made to the problems of field measurement.
F. J. Fahy, S. J. Elliott
openaire +1 more source
Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences, 1976
One of the most striking results of Ariel 5 has been the large number of transient sources which has been observed, including what is probably a new type which is relatively short-lived and one near the Galactic Centre which is also probably distinct from the others since it was also observed as a radio source.
openaire +1 more source
One of the most striking results of Ariel 5 has been the large number of transient sources which has been observed, including what is probably a new type which is relatively short-lived and one near the Galactic Centre which is also probably distinct from the others since it was also observed as a radio source.
openaire +1 more source
Discriminating Multiple Transient Point-Like Sources
SPIE Proceedings, 1989ABSTRACT The distinguishing of point -like man made gamma ray sources from point like astrophysical or cosmological sources can be achieved by analyzing the line structure of the gamma ray spectrum in the 0.5 - 10 MeV energy range. A special computer program has been developed for this analysis and tested in Monte Carlo simulations.
D. B. Cline +5 more
openaire +1 more source
Transient radiation from axially symmetric sources
The Journal of the Acoustical Society of America, 1986A method is presented for the efficient calculation of radiated acoustic fields from a radially symmetric source in a rigid baffle excited by an arbitrary time excitation. The technique is a modal analysis based on the series expansion of the source velocity excitation in terms of either of two basis functions.
Daniel Guyomar, John Powers
openaire +1 more source
Solar VLBI of Compact Transient Sources
Solar Physics, 1986Very Long Baseline Interferometry offers the only technique for resolving the transient compact sources which, according to an increasing weight of observational and theoretical evidence, occur during solar flares. In this paper we discuss the problems of applying VLBI to observing the Sun, the results obtained so far and how the technique may be ...
openaire +2 more sources
Shutter transients during solid-source epitaxy
Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures Processing, Measurement, and Phenomena, 2005Effusion cells are commonly used in solid-source molecular beam epitaxy for evaporation of the source materials. A prominent inaccuracy during effusion cell operation is strong flux transients after shutter opening. We have studied the temperature and time dependent beam fluxes of effusion cells filled with the group III elements indium, aluminum, and ...
Ch. Heyn, S. Cunis
openaire +1 more source
On the Radiation from Transient Light Sources
Proceedings of the Physical Society. Section A, 1949A theoretical treatment is given of the problem of analysing the radiation from transient light sources in the form of clouds of incandescent particles. Recently a method of correlating this radiation with various physical parameters has been suggested by E. F. Caldin.
openaire +1 more source
Parametric acoustic sources of transient signals
The Journal of the Acoustical Society of America, 1979A theoretical treatment is formulated for transient, or broadband, parametric acoustic sources, i.e., parametric sources using an arbitrarily modulated primary carrier signal. This treatment makes use of previously calculated characteristics for steady-state, or narrow-band, parametric sources. The theory does not include saturation effects.
Peter Mello, Mark B. Moffett
openaire +1 more source