Results 111 to 120 of about 609 (248)

The Sources of Fast Radio Bursts

open access: yesThe Open Journal of Astrophysics
This paper argues that repeating and apparently non-repeating Fast Radio Bursts are distinct classes of events produced by distinct classes of sources. As for conference proceedings, this paper reviews the evidence for that division, and then discusses ...
Jonathan I Katz
doaj   +1 more source

Efficient Process Development for Laser Powder Bed Fusion of a Soft‐Magnetic Metallic Glass Composite

open access: yesAdvanced Engineering Materials, EarlyView.
Iron‐based metallic glass alloys exhibit excellent soft‐magnetic properties, and unprecedented geometrical freedom in the design of soft‐magnetic metallic glass components is made possible by additive manufacturing. An efficient workflow for developing parameters for laser‐based powder bed fusion of a Fe‐based metallic glass alloy is presented along ...
Julia Löfstrand   +7 more
wiley   +1 more source

Mass-transfer Outbursts Reborn: Modeling the Light Curve of the Dwarf Nova EX Draconis

open access: yesThe Astrophysical Journal
EX Draconis is an eclipsing dwarf nova that shows outbursts with moderate amplitude (≃2 mag) and a recurrence timescale of ≃20–30 days. Dwarf novae outbursts are explained in terms of either a thermal-viscous instability in the disc or an instability in ...
Wagner Schlindwein, Raymundo Baptista
doaj   +1 more source

Periods of Outbursts and Standstills and Variations in Parameters of Two Z Cam Stars: Z Cam and AT Cnc

open access: yesAstronomy
We present our results on two Z Cam stars: Z Cam and AT Cnc. We apply observational data for the periods that cover the states of outbursts and standstills, which are typical for this type of object.
Daniela Boneva   +2 more
doaj   +1 more source

Effects of Carbon Nanoparticles on Triboelectro‐Induced Surface Defects

open access: yesAdvanced Engineering Materials, EarlyView.
Carbon nanoparticles added to grease modify the electrocontact behavior. The synergy of particle concentration and electric current dominates the surface damage of metals in contact. Electrical surface damage caused by current leakage is a critical challenge in high‐performance applications such as electric vehicle (EV) drivetrains and wind turbine ...
Mohsen Tajedini   +6 more
wiley   +1 more source

A group of merging galaxies falling into Abell 2142

open access: yesAstronomy & Astrophysics
Galaxy clusters produce a very hostile environment for galaxies: their gas gets stripped by ram pressure, they undergo galaxy interactions, and their star formation is quenched.
Anitha Shaji Aashiya   +5 more
doaj   +1 more source

Manufacturing Continuous Fiber‐Reinforced Printing Filaments: Development of a Post‐Consolidation Unit

open access: yesAdvanced Engineering Materials, EarlyView.
A novel, temperature‐controlled post‐consolidation unit is developed to test its potential to improve the melt impregnation process used to manufacture continuous fiber‐reinforced filaments for additive manufacturing of high‐performance thermoplastics.
Daniel Beermann   +2 more
wiley   +1 more source

Laboratory evidence of confinement and acceleration of wide-angle flows by toroidal magnetic fields

open access: yesCommunications Physics
Astrophysical jets play crucial roles in star formation and transporting angular momentum away from accretion discs, however, their collimation mechanism is still a subject of much debate due to the limitations of astronomical observational techniques ...
Z. Lei   +19 more
doaj   +1 more source

Energetic particles accelerated via turbulent magnetic reconnection in protoplanetary discs – I. Ionisation rates

open access: yesAstronomy & Astrophysics
Context. Ionisation controls the chemistry, thermal balance, and magnetic coupling in protoplanetary discs. However, standard ionisation vectors such as stellar UV, X-rays, Galactic cosmic rays might not be efficient enough, as UV/X-rays are attenuated ...
Brunn V.   +5 more
doaj   +1 more source

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