Results 51 to 60 of about 2,342,043 (349)

A NuSTAR Observation of the Gamma-ray Emitting Millisecond Pulsar PSR J1723-2837 [PDF]

, 2017
We report on the first NuSTAR observation of the gamma-ray emitting millisecond pulsar binary PSR J1723-2837. X-ray radiation up to 79 keV is clearly detected and the simultaneous NuSTAR and Swift spectrum is well described by an absorbed power-law with ...
Hui, C. Y., Kong, A. K. H., Li, K. L., Takata, J., Tam, P. H. T.   +4 more
core   +2 more sources

X-ray binary formation in low-metallicity blue compact dwarf galaxies [PDF]

, 2014
X-rays from binaries in small, metal-deficient galaxies may have contributed significantly to the heating and reionization of the early universe. We investigate this claim by studying blue compact dwarfs (BCDs) as local analogues to these early galaxies.
M. Brorby, P. Kaaret, A. Prestwich
semanticscholar   +1 more source

Superorbital modulation of X-ray emission from gamma-ray binary LSI +61 303

, 2012
We report the discovery of a systematic constant time lag between the X-ray and radio flares of the gamma-ray binary LSI +61 303, persistent over long, multi-year, time scale.
Chernyakova, M., Lutovinov, A., Malyshev, D., Molkov, S., Neronov, A., Pooley, G.   +5 more
core   +1 more source

Machine Learning Applied to High Entropy Alloys under Irradiation

Advanced Engineering Materials, EarlyView.
Designing alloys for extreme environments demands fast, trustworthy prediction. This review charts how machine learning—especially machine‐learned interatomic potentials and predictive models based on experiment‐informed datasets—captures the complexity of high‐entropy alloys in extreme environments, predicts phase formation, mechanical properties, and
Amin Esfandiarpour, Sri Tapaswi Nori, Silvia Bonfanti, Mikko Alava, Antoni Wadowski, Wenyi Huo, Łukasz Kurpaska, Michał Pecelerowicz, Jan S. Wróbel   +8 more
wiley   +1 more source

3.9 day orbital modulation in the TeV gamma-ray flux and spectrum from the X-ray binary LS 5039 [PDF]

, 2006
New observations of LS 5039, a High Mass X-ray Binary comprising a massive star and compact object, were carried out with the High Energy Stereoscopic System of Cherenkov Telescopes (H.E.S.S.) in 2005 at very high energy (VHE) gamma-ray energies.
T. H. C. Aharonian, E. al.
semanticscholar   +1 more source

X-ray Emission from the Binary Central Stars of the Planetary Nebulae HFG 1, DS 1, and LoTr 5

, 2010
Close binary systems undergoing mass transfer or common envelope interactions can account for the morphological properties of some planetary nebulae. The search for close binary companions in planetary nebulae is hindered by the difficulty of detecting ...
Arnaud, Bohm, Bruch, Cargill, Chu, Churazov, De Marco, Drake, Frank, Frew, Grauer, Groth, Guerrero, Heckathorn, Heckathorn, Hilditch, Jasniewicz, Jeffries, Joel H. Kastner, Jordan, Kastner, Kastner, Kuczawska, Marsh, Mathioudakis, Montez, Motch, Muerset, Muerset, O'Dwyer, Orsola De Marco, Paczynski, Press, Ricker, Rodolfo Montez, Sanz-Forcada, Serber, Snowden, Soker, Stassun, Strassmeier, Thevenin, Weisskopf, You-Hua Chu   +43 more
core   +1 more source

Subgrain and Cavity Development during Creep of Al‐3.85%Mg

Advanced Engineering Materials, EarlyView.
Al‐3.85%Mg does form subgrains if crept at very high strains. This fact allows the unification of the creep description in two different alloys such as pure Al and Al–Mg alloys. It is classically considered that the creep mechanisms for type M (e.g., pure Al) and type A alloys (e.g., Al–Mg alloys) are different.
Augusta Isaac, Itziar Serrano‐Munoz, Aleksander Kostka, Martinus Putra Widjaja, Gaspar González‐Doncel, Giovanni Bruno, Ricardo Fernández   +6 more
wiley   +1 more source

Pulsed Iron Line Emission from the First Galactic Ultraluminous X-Ray Pulsar Swift J0243.6+6124

The Astrophysical Journal
We report the phase-resolved spectral results of the first Galactic pulsating ultraluminous X-ray source (PULX) Swift J0243.6+6124, modeling its 2017–2018 outburst peak using data collected by the Hard X-ray Modulation Telescope (Insight-HXMT). The broad
Y. X. Xiao, Y. J. Xu, M. Y. Ge, F. J. Lu, S. N. Zhang, S. Zhang, L. Tao, J. L. Qu, P. J. Wang, L. D. Kong, Y. L. Tuo, Y. You, S. J. Zhao, J. Q. Peng, Y. F. Du, Y. H. Zhang, W. T. Ye   +16 more
doaj   +1 more source

Evidence for a Black Hole Spin–Orbit Misalignment in the X-Ray Binary Cyg X-1

The Astrophysical Journal Letters, 2023
Recently, the accretion geometry of the black hole X-ray binary Cyg X-1 was probed with the X-ray polarization. The position angle of the X-ray-emitting flow was found to be aligned with the position angle of the radio jet in the plane of the sky. At the
Andrzej A. Zdziarski, Alexandra Veledina, Michał Szanecki, David A. Green, Joe S. Bright, David R. A. Williams   +5 more
doaj   +1 more source

Power-Colours: Simple X-ray Binary Variability Comparison [PDF]

, 2014
We demonstrate a new method of variability classification using observations of black hole X-ray binaries. Using ‘power colours’ - ratios of integrated power in different Fourier frequency bands - we can clearly differentiate different canonical black ...
L. Heil, P. Uttley, M. Klein-Wolt
semanticscholar   +1 more source