The cooling rate of neutron stars after thermonuclear shell flashes [PDF]
, 2013 Thermonuclear shell flashes on neutron stars are detected as bright X-ray bursts. Traditionally, their decay is modeled with an exponential function. However, this is not what theory predicts.
A. Cumming +31 more
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On the nature of two low M-dot X-ray bursters: 1RXS J170854.4-321857 and 1RXS J171824.2-402934 [PDF]
, 2005 We carried out Chandra observations of two low-luminosity low-mass X-ray binaries, 1RXS J170854.4-321857 and 1RXS J171824.2-402934, for which previously single X-ray bursts had been detected with the Wide Field Cameras (WFCs) on board BeppoSAX. Both were
Asai +40 more
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The comparative study of text documents clustering algorithms
Environment Conservation Journal, 2015 Clustering is one of the most significant research area in the field of data mining and considered as an important tool in the fast developing information explosion era.Clustering systems are used more and more often in text mining, especially in ...
Mohammad Eiman Jamnezhad, Reza Fattahi
doaj +1 more source
Identification of the optical and quiescent counterparts to the bright X-ray transient in NGC 6440 [PDF]
, 2001 After 3 years of quiescence, the globular cluster NGC 6440 exhibited a bright transient X-ray source turning on in August 2001, as noted with the RXTE All-Sky Monitor.
Asai K. +12 more
core +3 more sources
The cross-linked polyvinyl alcohol/hydroxyapatite nanocomposite foam
Journal of Materials Research and Technology, 2019 Polymeric foams are widely used for medical applications especially in terms of bio-scaffolds. This article tries to indicate a new methodology in fabrication of PVA-based composite scaffolds using esterification and formalizing methods simultaneously to
Amir Ali Ashraf +2 more
doaj +1 more source
Analytical and Comparative Study of Bird motifs in Paintings of Flowers and Birds Lotfali Shirazi [PDF]
نگره, 2016 This study shows that the art works of painting flowers and birds along the Safavid and Zand is located at the previous edition. The visual elements of art to organize his own identity and culture.
Elaheh PanjehBashi
doaj +1 more source
Multiple Sub-Jet Model of Gamma Ray Bursts and Possible Origin of X-ray Precursors and Post-cursors [PDF]
, 2000 We assume that internal shocks of Gamma Ray Bursts (GRBs) consist of multiple sub-jets with a collimation half-angle $\sim {\rm several }\times\gamma_i^{-1}$, where $\gamma_i$ is the Lorenz factor of each sub-jet.
Nakamura, Takashi
core +3 more sources
An Assessment of a Long-Throated Flume with a Broad-Crested Weir Cross-Section for Flow Measurement [PDF]
مهندسی منابع آب, 2013 Water-use-efficiency, which is a matter of utmost importance in irrigated-agriculture in the water-short Iran, requires installation of accurate flow measurement devices on the outlets of delivery channels.
M.J. Saki, N. Vaseli, N. Talebbeydokhti
doaj
A state-dependent influence of the type-I bursts on the accretion in 4U 1608--52?
, 2014 We investigated the possible feedback of type-I burst to the accretion process during the spectral evolution of the atoll source 4U 1608--52. By fitting the burst spectrum with a blackbody and an adjustable, persistent spectral component, we found that ...
Chen, YuPeng +6 more
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Searching for the most powerful thermonuclear X-ray bursts with the Neil Gehrels Swift Observatory
, 2018 We searched for thermonuclear X-ray bursts from Galactic neutron stars in all event mode data of the Neil Gehrels Swift Observatory collected until March 31, 2018. In particular, we are interested in the intermediate-duration bursts (shell flashes fueled
Degenaar, N. +3 more
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