Results 271 to 280 of about 29,884 (299)

Time-resolved Mn K_α emission reveals early redox dynamics in the S₃ to S₀ transition of the photosystem II Kok cycle. [PDF]

J Biol Chem
Maximova O, Bhowmick S, Tuncer H, Bury G, Henning R, Kosheleva I, Kim IS, Mohammadi O, Levantino M, Cammarata M, Pushkar Y.   +10 more
europepmc   +1 more source

Electric field switching of chiral phonons

Grimes M, Ueda H, Allington C, Romao C, Kummer K, Kaur P, Wang L, Chang Y, Yang J, Huang S, Staub U.   +10 more
europepmc   +1 more source

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X-ray transient sources

Astrophysics and Space Science, 1979
The galactic distribution and physical nature of X-ray transient sources is investigated. Two types of transients are considered. The observational data on 41 X-ray transient sources are given, and the average parameters of hard and soft X-ray transients are estimated.
P R Amnuel, O H Guseinov, Guseinov O H
exaly   +2 more sources

X-ray variability in transient X-ray sources

Il Nuovo Cimento Della Società Italiana Di Fisica C, 1990
The X-ray variability of transient X-ray binaries is analyzed in terms of the orbital motion of the neutron star, centrifugal inhibition of accretion and of the variable moss loss rate due to activity of the optical counterpart. The systems A0535+26 and V0332+53 are studied in this respect.
Domitilla De Martino, Taylor A R, Waters L B F M   +2 more
exaly   +2 more sources

Transient X-ray sources

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
exaly   +2 more sources

The periodic transient X-ray sources

Nature, 1975
THE transient X-ray sources Ariel 1118–61 and Ariel 0535 + 26 have periods of 405 s (ref. 1) and 114 s (ref. 2) respectively. Rappaport and McClintock3 reported the discovery of a 283-s period in the X-ray binary 3U0900–40 (a ‘continuous’ source) which is known to have an orbital period Porb = 8.95 d.
D T Wickramasinghe, Wickramasinghe D T
exaly   +2 more sources

Spectral characteristics of transient X-ray sources

Nature, 1976
THE transient X-ray sources A1524—62 and A0535+26 were briefly observed by the University College, London, proportional counter spectrometer, experiment C on the Ariel V satellite (P. W. Sanford and J. C. Ives, unpublished). The resulting spectra help to complete the spectral history of these two sources, making seven sources for which there is now ...
P W Sanford, Maraschi L, Sanford P W
exaly   +2 more sources

BATSE observations of transient hard X-ray sources

AIP Conference Proceedings, 1994
Many transient sources have been detected and monitored by the Burst and Transient Source Experiment (BATSE) since launch using the Earth occultation technique. These include x‐ray novae, pulsars, and other galactic sources. We present preliminary results of the temporal and spectral characteristics for seven transients which are potentially black hole
Wilson C A, Rubin B C, Paciesas W S
exaly   +2 more sources

Unveiling Supergiant Fast X‐Ray Transient Sources withINTEGRAL [PDF]

Astrophysical Journal, 2006
Supergiant high-mass X-ray binaries (SGXBs) are believed to be rare objects, as stars in the supergiant phase have a very short lifetime and to date only about a dozen of them have been discovered. They are known to be persistent and bright X-ray sources.
Vito Sguera, Adam Hill
exaly   +2 more sources