Results 101 to 110 of about 131,686 (354)

Probing the composition of sub-millisecond rotating compact stars by r-modes instability [PDF]

, 2012
We investigate the implications of the r-modes instability on the composition of a compact star rotating at a sub-millisecond period. In particular, the only viable astrophysical scenario for such an object, wich might present inside the Low Mass X-ray ...
Drago, Alessandro, Pagliara, Giuseppe
core   +1 more source

Properties of the massive X-ray binary 4U 1700 - 37 = HD 153919

, 1992
The system parameters for the massive X-ray binary 4U 1700 - 37 are reexamined in the light of modern spectroscopic theory and new UV and X-ray data. The system is composed of HD 153919, an O6f star having a stronger wind, and an accreting neutron star ...
S. Heap, M. Corcoran
semanticscholar   +1 more source

Low-Magnetic-Field Neutron Stars in X-ray Binaries

, 2023
In this chapter we give an overview of the properties of X-ray binary systems containing a weakly magnetized neutron star. These are old (Giga-years life-time) semi-detached binary systems containing a neutron star with a relatively weak magnetic field (less than $\sim 10^{10}$ Gauss) and a low-mass (less than $1 M_\odot$) companion star orbiting ...
Di Salvo, Tiziana, Papitto, Alessandro, Marino, Alessio, Iaria, Rosario, Burderi, Luciano   +4 more
openaire   +2 more sources

Additive Manufacturing of Highly Alloyed Aluminum–Lithium

Advanced Engineering Materials, EarlyView.
Al–Li alloys, promising for future lightweight constructions due to their low density and high stiffness, are limited to 9 at% lithium in commercial forms because of segregation issues. To overcome this traditional limitation, powder bed fusion with an ultrashort pulse laser is used.
Lisa Matthäus, Hagen Peter Kohl, Dongmei Liu, Stephanie Lippmann, Stefan Nolte   +4 more
wiley   +1 more source

Constraints on Neutron Star Structure from the Clocked X-Ray Burster 1RXS J180408.9−342058

The Astrophysical Journal, 2023
Type I X-ray bursts are rapid-brightening transient phenomena on the surfaces of accreting neutron stars (NSs). Some X-ray bursts, called clocked bursters, exhibit regular behavior with similar light-curve profiles in their burst sequences.
A. Dohi, W. B. Iwakiri, N. Nishimura, T. Noda, S. Nagataki, M. Hashimoto   +5 more
doaj   +1 more source

Gravitational waves from inspiralling compact binaries with magnetic dipole moments

, 2000
We investigate the effects of the magnetic dipole-dipole coupling and the electromagnetic radiation on the frequency evolution of gravitational waves from inspiralling binary neutron stars with magnetic dipole moments.
Balasubramanian R., Baykal A., Bocquet M., Bonazzola S., Haberl F., Heras J. A., Israel G. L., Jaranowski P., Jaranowski P., Keisuke Taniguchi, Konno K., Kunihito Ioka, Peters P. C., Shalybkov D. A., Tagoshi H., Tagoshi H., Thompson C., van den Heuvel E. P. J.   +17 more
core   +1 more source

Mechanical and Microstructural Effects of ZrO2 Nanoparticles in Fe20Cr Oxide Dispersion‐Strengthened Alloys Processed by Laser Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
The influence of oxide nanoparticle synthesis route and concentration on microstructure and high‐temperature performance of additively manufactured oxide dispersion‐strengthened steels is investigated. Comparing laser‐generated and chemically synthesized ZrO2 nanoparticles, the study reveals how dispersion quality, crystal structure and particle size ...
Mareen Goßling, Silja‐Katharina Rittinghaus, Felix Radtke, Abdelrahman Elsayed, Marina Macias Barrientos, Ulf Ziesing, Louis Becker, Ihsan Murat Kuşoğlu, Christoph Broeckmann, Ulrich Krupp, Avinash Hariharan, Sebastian Weber, Bilal Gökce   +12 more
wiley   +1 more source

The SMC X‐ray transient XTE J0111.2–7317: a Be/X‐ray binary in a supernova remnant? [PDF]

, 1999
We report observations which confirm the identity of the optical/IR counterpartto the Rossi X-ray Timing Explorer transient source XTE J0111.2–7317. The coun-terpart is suggested to be a B0-B2 star (luminosity class III–V) showing an IR excessand strong ...
M. Coe, N. J. Haigh, P. Reig, P. Reig
semanticscholar   +1 more source

Antimicrobial Titanium–Copper Alloys: The Role of Microstructure in Arc‐Melted Compositions

Advanced Engineering Materials, EarlyView.
Copper‐containing titanium alloys show promise in combating orthopedic implant infections. This study explores the influence of heat treatment on Ti‐11.5Cu and Ti‐33Cu alloys, revealing that larger Ti2Cu precipitates (≈5 μm) enhance antimicrobial efficacy through increased surface contact. Results suggest contact sterilization is the primary mechanism,
Daisy Rabbitt, Paraic O’Kelly, Victor M. Villapún, Luke N. Carter, Alexander J. Knowles, Sophie C. Cox   +5 more
wiley   +1 more source

A Comprehensive Study of Thermonuclear X-Ray Bursts from 4U 1820–30 with NICER: Accretion Disk Interactions and a Candidate Burst Oscillation

The Astrophysical Journal
We present the results obtained from timing and spectral studies of 15 thermonuclear X-ray bursts from 4U 1820–30 observed with the Neutron Star Interior Composition Explorer (NICER) during its 5 yr of observations between 2017 and 2022.
Gaurava K. Jaisawal, Z. Funda Bostancı, Tuğba Boztepe, Tolga Güver, Tod E. Strohmayer, David R. Ballantyne, Jens H. Beck, Ersin Göğüş, Diego Altamirano, Zaven Arzoumanian, Deepto Chakrabarty, Keith C. Gendreau, Sebastien Guillot, Renee M. Ludlam, Mason Ng, Andrea Sanna, Jérôme Chenevez   +16 more
doaj   +1 more source