Results 41 to 50 of about 3,131 (230)

On blue straggler formation by direct collisions of main sequence stars [PDF]

The Astrophysical Journal, 1995
We report the results of new SPH calculations of parabolic collisions between main-sequence (MS) stars. The stars are assumed to be close to the MS turn-off point in a globular cluster and are therefore modeled as $n=3$, $Γ=5/3$ polytropes. We find that the high degree of central mass concentration in these stars has a profound effect on the ...
Lombardi, Jr., James C., Rasio, Frederic A., Shapiro, Stuart L.   +2 more
openaire   +2 more sources

Magnetic Force Microscopy Signatures of Higher‐Order Skyrmions and Antiskyrmions

Advanced Functional Materials, EarlyView.
Magnetic force microscopy operated under vacuum conditions enables the qualitative identification of higher‐order skyrmions and antiskyrmions in Co/Ni multilayers at room temperature. Distinct stray‐field contrast signatures arise from vertical Bloch lines and complex domain‐wall configurations.
Sabri Koraltan, Joe Sunny, Tamer Karaman, Reshma Peremadathil‐Pradeep, Emily Darwin, Felix Büttner, Dieter Suess, Hans Josef Hug, Manfred Albrecht   +8 more
wiley   +1 more source

Magnetic Field Amplification during Stellar Collisions between Low-mass Stars

The Astrophysical Journal Letters
Blue straggler stars in stellar clusters appear younger and bluer than other cluster members, offering a unique opportunity to understand the stellar dynamics and populations within their hosts.
Taeho Ryu, Alison Sills, Ruediger Pakmor, Selma de Mink, Robert Mathieu   +4 more
doaj   +1 more source

2D Magnetic and Topological Quantum Materials and Devices for Ultralow Power Spintronics

Advanced Functional Materials, EarlyView.
2D magnets and topological quantum materials enable ultralow‐power spintronics by combining robust magnetic order with symmetry‐protected, Berry‐curvature‐driven transport. Fundamentals of 2D anisotropy and spin‐orbit‐coupling induced band inversion are linked to scalable growth and vdW stacking.
Brahmdutta Dixit, Yifei Yang, Shawn Li, Yu‐Chia Chen, Qi Jia, Jian‐Ping Wang   +5 more
wiley   +1 more source

Transitory Tidal Heating and Its Impact on Cluster Isochrones

The Astrophysical Journal
The kinetic energy in tidal flows, when converted into heat, can affect the internal structure of a star and shift its location on a color–magnitude diagram from that of standard models.
S. Jane Arthur, Gloria Koenigsberger, Kristin Brady, Diana Estrella-Trujillo, Catherine Pilachowski   +4 more
doaj   +1 more source

Field Blue Stragglers and Related Mass Transfer Issues

, 2014
This chapter contains my impressions and perspectives about the current state of knowledge about field blue stragglers (FBS) stars, drawn from an extensive literature that I searched. I conclude my review of issues that attend FBS and mass transfer, by a
A. Buzzoni, A. D. Vanture, A. Duquennoy, A. F. Marino, A. F. Marino, A. G. D. Philip, A. J. Horton, A. Jorissen, A. M. Boesgaard, A. M. Boesgaard, A. Manduca, A. R. Sandage, A. R. Sandage, A. Tokovinin, A. W. Rodgers, A. W. Rodgers, B. Paczynski, B. Tian, B. W. Bopp, B. W. Carney, B. W. Carney, B. Yanny, C. Flynn, C. J. Pritchet, C. L. Perry, C. M. Lance, C. M. Lance, D. A. VandenBergh, D. A. VandenBergh, D. Geisler, D. H. McNamara, D. W. Latham, E. Böhm-Vitense, E. Carretta, E. H. Olsen, E. H. Olsen, E. M. Green, E. Poretti, E. Sirko, F. Marchi De, F. Spite, G Michaud, G. Beccari, G. I. Mandushev, G. P. Kuiper, G. Pietrzyński, G. Piotto, G. W. Preston, G. W. Preston, G. W. Preston, G. W. Preston, G. W. Preston, G. W. Preston, G. W. Preston, G. Wallerstein, H Bondi, H. J. Newberg, H. M. J. Boffin, H. M. J. Boffin, H. Morrison, I Soszyński, I. B. Thompson, I. I. Ivans, I. King, J. A. Thorburn, J. A. Thorburn, J. E. Hesser, J. E. Norris, J. F. Sepinsky, J. F. Sepinsky, J. F. Sepinsky, J. L. Sérsic, J. Norris, J. O. Petersen, J. R. Pier, J. W. Glaspey, K. A. Venn, K. Fuhrmann, K. Fuhrmann, K. Innanen, L. A. Balona, L. Clewley, L. M. Hobbs, L. Searle, M Shetrone, M. Bolte, M. D. Shetrone, M. H. Pinsonneault, M. H. Pinsonneault, M. H. Pinsonneault, M. Livio, M. Livio, M. Mateo, M. Monelli, M. Spite, M. Zoccali, N. Sanduleak, N. Soker, O. J. Eggen, O. Struve, O. Y. Gnedin, P. B. Stetson, P. Côté, P. J. T. Leonard, P. P. Eggleton, R Kippenhahn, R. Buser, R. D. McClure, R. D. McClure, R. E. Cohen, R. E. Davies, R. J. Stancliffe, R. J. Stancliffe, R. W. Hilditch, R. Wilhelm, R. Wilhelm, S. Bisterzo, S. E. Koposov, S. G. Ryan, S. G. Ryan, S. Vauclair, S. Yi, T. A. Smecker-Hane, T. C. Beers, T. C. Beers, T. D. Kinman, T. Masseron, T. Theuns, W. H. McCrea, W. I. Clarkson, W. L. Melbourne, W. R. Brown, X.-X. Xue, Y.-W. Lee, Z. Han   +134 more
core   +1 more source

Integrated Field‐Free SOT Domain‐Wall Synapses and MTJ Stochastic Neurons for Hardware Boltzmann Machines

Advanced Functional Materials, EarlyView.
Field‐free spin‐orbit torque domain‐wall synapses integrated with stochastic MTJ neurons enable compact hardware Boltzmann machines. Leveraging intrinsic stochasticity and multi‐level conductance, the system achieves efficient probabilistic learning with high accuracy, demonstrating a scalable spintronic platform for energy‐efficient edge AI.
Aijaz H. Lone, Meng Tang, Camelia Florica, Bin He, Jingkai Xu, Selma Amara, Georgian Melinte, Xixiang Zhang, Gianluca Setti   +8 more
wiley   +1 more source

Rapid Fabrication of Self‐Propelled and Steerable Magnetic Microcatheters for Precision Medicine

Advanced Materials, EarlyView.
A rapid Joule heating fabrication method for the production of self‐propelling, adaptive microcatheters, with tunable stiffness and integrated microfluidic channels is presented. Demonstrated through three microrobotic designs, including a steerable guiding catheter, an untethered wave‐crawling TubeBot, and a distal‐end propelled microcatheter, it was ...
Zhi Chen, Boris Rivkin, David Castellanos‐Robles, Ivan Soldatov, Lukas Beyer, Mariana Medina‐Sánchez   +5 more
wiley   +1 more source

WOCS 4540: Detailed Analysis of a very Long Orbital Period Blue Straggler

The Astrophysical Journal, 2023
WOCS 4540 is the longest orbital period ( P _orb = 3030 days) blue straggler star (BSS)—white dwarf (WD) pair in the old open cluster NGC 188. It also contains one of the most luminous BSS in the cluster.
Meng Sun, Robert D. Mathieu
doaj   +1 more source

The Formation Rate of Blue Stragglers in 47 Tucanae [PDF]

, 1999
We investigate the effects of changes in the blue straggler formation rate in globular clusters on the blue straggler distribution in the color-magnitude diagram. We find that the blue straggler distribution is highly sensitive to the past formation rate.
Alison Sills, Auriere M., Charles D. Bailyn, Ferraro F., Peter D. Edmonds, Ronald L. Gilliland   +5 more
core   +3 more sources