Results 61 to 70 of about 73,378 (298)

Nature of the Extreme Ultraluminous X-ray Sources [PDF]

, 2015
In this proof-of-concept study we demonstrate that in a binary system mass can be transferred toward an accreting compact object at extremely high rate. If the transferred mass is efficiently converted to X-ray luminosity (with disregard of the classical
Belczynski, Krzysztof, Sadowski, Aleksander, Sobolewska, Malgorzata, Wiktorowicz, Grzegorz   +3 more
core   +2 more sources

Cathodic Cage Plasma Deposition of Nanostructured Cu–Fe–Se Coatings on Poly(methyl Methacrylate)

Advanced Engineering Materials, EarlyView.
Nanostructured Cu–Fe–Se coatings are deposited on PMMA by a modified cathodic cage plasma process, enabling low‐temperature deposition on polymer substrates. A transition from discontinuous to compact morphology is observed with temperature, with optimal properties at 200°C, where improved CuFeSe2‐type bonding, lowest sheet resistance, and favorable ...
V. S. S. Sobrinho, M. Naeem, T. H. C. Costa, M. S. Libório, J. C. A. Queiroz, C. B. B. Luna, R. R. M. Sousa, P. S. Vieira, E. M. Araújo   +8 more
wiley   +1 more source

Orbital Phase Shifts of Type-I Outbursts in EXO 2030+375

The Astrophysical Journal
EXO 2030+375 is a peculiar high-mass X-ray binary that has been exhibiting Type-I outburst activities consistently over the past decades. The phases of outburst peaks are generally stable and occur near the orbital periastron.
Run-Ting Huang, Long Ji, Jing-Zhi Yan
doaj   +1 more source

Coronal X-ray emission from an intermediate-age brown dwarf [PDF]

, 2003
We report the X-ray detection of the brown dwarf (BD) companion TWA 5B in a $\simeq 12$ Myr old pre-main sequence binary system. We clearly resolve the faint companion (35 photons) separated from the X-ray luminous primary by 2 arcsec in a {\it Chandra ...
Eric D. Feigelson, George Chartas, Gordon P. Garmire, Koji Mori, Neuhauser R., Neuhauser R., Steven H. Pravdo, Yohko Tsuboi, Yoshitomo Maeda   +8 more
core   +2 more sources

High-mass X-ray Binaries and OB-runaway Stars

, 2001
High-mass X-ray binaries (HMXBs) represent an important phase in the evolution of massive binary systems. HMXBs provide unique diagnostics to test massive-star evolution, to probe the physics of radiation-driven winds, to study the process of mass accretion, and to measure fundamental parameters of compact objects.
openaire   +4 more sources

Stellar wind accretion and accretion disk formation: Applications to neutron star high-mass X-ray binaries [PDF]

Publications of the Astronomical Society of Japan, 2019
Abstract Recent X-ray observations have revealed the complexity and diversity of high-mass X-ray binaries (HMXBs). This diversity challenges a classical understanding of the accretion process on to the compact objects. In this study, we reinforce the conventional concept of the nature of wind-fed accretion on to a neutron star ...
Karino, Shigeyuki, Nakamura, Kenji, Taani, Ali   +2 more
openaire   +2 more sources

Determination of wind-fed model parameters of neutron stars in high-mass X-ray binaries

Publications of the Astronomical Society of Australia, 2022
AbstractWe have studied several neutron star high-mass X-ray binaries (HMXBs) with super-giant (SG) companions using a wind-fed binary model associated with the magnetic field. By using the concept of torque balance, the magnetic field parameter determines the mass accretion rate.
Ali Taani, Shigeyuki Karino, Liming Song, Chengmin Zhang, Sylvain Chaty   +4 more
openaire   +2 more sources

Ideal Molecular Sieving with a Dense MOF for Helium Upgrading with Highly Diffusion Selective Mixed Matrix Membranes

Advanced Functional Materials, EarlyView.
The separation of Helium gas from natural gas is challenging but highly important. MIL‐116(Ga), a “non‐porous” metal–organic framework is used as a molecular sieve to separate He from CH4. Druse‐like MIL‐116(Ga) particles are integrated into polysulfone mixed matrix membranes.
Ayisha Komal, Laura Calderón‐Rodríguez, Oksana Smirnova, Eren Grossmann, Aparna Binu Varghese, Karen Marlenne Garcia Alvarez, Andreas Schneemann, Thomas Hoyer, Ralf Wyrwa, Felix Helmut Schacher, Alexander Knebel   +10 more
wiley   +1 more source

XMM-Newton View of Pulsating Iron Fluorescent Emission from Centaurus X-3

The Astrophysical Journal
Centaurus X–3 (Cen X–3) is a bright, high-mass X-ray binary pulsar. We present a pulse phase–resolved X-ray spectral analysis of data from an archival XMM-Newton observation of Cen X–3 taken during the high state of the source.
Kinjal Roy, Hemanth Manikantan, Biswajit Paul   +2 more
doaj   +1 more source

The Distance, Mass, and Radius of the Neutron Star in 4U 1608-52

, 2010
Low mass X-ray binaries that show thermonuclear bursts are ideal sources for constraining the equation of state of neutron star matter. The lack of independent distance measurements for most of these sources, however, prevents a systematic exploration of
Alves, Antonio Cabrera-Lavers, Arnaud, Cohen, Durant, Durant, Feryal Özel, Galloway, Grocholski, Heinke, Ibata, Ibata, Juett, Juett, Lattimer, Madej, Paczynski, Patricia Wroblewski, Penninx, Pietrzyński, Predehl, Skrutskie, Thorsett, Tolga Güver, Ueda, van Paradijs, Wachter, Webb, Wilms, Wroblewski, Özel   +30 more
core   +1 more source